GREENWICH SECOND TEN-YEAE CATALOGUE OF 6892 STAES FOE 1890.
Appendix
O
II.
to
Greenwich Observations, 1898.
[
35
GIFT OF ASTRONOMICAL SOCIETY OP TIE PACIFIC
MEAN CORRECTIONS TO THE RIGHT ASCENSIONS OF THE CLOCK STARS, from 12-hour Groups of the 1860, 1864, 1872, 1880, and 1890 Catalogues. (The Curvet for 1860 and 1864 are derived from a Comparison with the u-hour Groups of the 3
v
c.vs
h
4h
187* Catalogue.)
SECOND TEN-YEAR CATALOGUE OF
6892
STARS
FOR THE EPOCH
1890-0, FROM OBSERVATIONS WITH
THE TEANSIT-CIECLE MADE AT THE
~"
ROYAL OBSERVATORY, GREENWICH, UNDER THE DIRECTION OF
WILLIAM HENRY MAHONEY CHRISTIE,
C.B., M.A., F.R.S.,
ASTRONOMER ROYAL.
(Forming Appendix
II. to
the
Volume of Greenwich Observations for
the
Year 1898.)
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to be purchased, either directly or through any Bookseller, from CO., 39-47 ROSE STREET, EDINBURGH, and 90 WEST NILE STREET, GLASGOW; or
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Price Six Shillings
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.
ASTRONOMY
tr?
INTRODUCTION TO THE
GREENWICH SECOND TEN-YEAR CATALOGUE OF
6892 STARS, FOR THE EPOCH
1890-0.
THE
results contained in the following Catalogue are derived
from observations made
with the Transit-Circle in the years 1887 to 1896.
The year 1890 has been adopted for the epoch observations, and more convenient for reduction
mean year
as being near the
of the
to other epochs than the actual
mean
year.
The (i.)
stars contained in the Catalogue
Fundamental
Stars.
These
may
be classified as follows
include
Greenwich
Clock
:
Stars,
9
Azimuth
Nautical Almanac and other Ephemerides. stars, and Altogether, 843 stars of Professor Newcomb's Catalogue of Fundamental Stars for 1875 and the stars in the
1900 are contained in the present Catalogue. These stars have been generally well observed, especially those of the Greenwich Clock Star list, of which the number of observations (ii.)
is
usually 50 or more.
Stars contained in Groombridge's
Circumpolar Catalogue, 1810.
Of the 4243
Groombridge's Catalogue, 3645 are contained in this Catalogue, and the remainder, with-few exceptions, have been observed in the preceding Ten-Year or Ninestars
in
Year Catalogues. (iii.)
About 1500
stars,
brighter than the 7th magnitude, and beyond the limits of
N.P.D. of Groombridge's Catalogue. These include Zodiacal stars, Southern stars observed for refraction, and stars used for determination of zenith point. With these
may
be included 340 Piazzi
(iv.)
About 700 or 800
stars.
stars,
mostly
The
faint.
positions
of these stars were
required as guiding stars for the Astrographic Equatorial, comparison stars for Comets, or stars which had been occulted
The
total
Groombridge
number
by the Moon.
of Bradley stars observed
is
stars.
701273
1817, of which
number 466
are also
GREENWICH SECOND TEN- YEAR CATALOGUE or STARS FOR Attention
is
drawn
in this Introduction to various observations
1890.
made
7
during the years 1887 to 1896, with the view of investigating the peculiarities of the instrument and the results are collected as showing to what extent the Catalogue is free from, and to what extent it may be liable to, systematic errors. chief}}
;
I.
RIGHT ASCENSIONS.
The position
determined each day by observations on the collimators, the reading of the micrometer of the north collimator for coincidence of its nearly vertical wire with that of the south collimator being Collimation Error.
of the line of collimation
is
The obtained by observations made through the central cube of the transit-circle. rmean of the observations is taken for each week, and a correction of + 008 ( = 0"'30), determined from observations made in the years 1871 to 1880, has been applied in forming the adopted reading of the line of collimation on account of the difference of the readings for coincidence of the collimators, according as they are viewed through the central cube or with the instrument raised.
The readings for coincidence of the collimators are given in the Greenwich Obser" Transits." Once each week these observations are made both vations in the section through the central cube and with the instrument raised, the latter being marked with the letter R. The differences between these nearly simultaneous readings for coincidence, as obtained by all the observations of each observer, give the following corrections to the collimation error derived from observations through the central cube for each of the years 1887 to 1896:
Excess of Collimation Error ivhen the observation for coincidence of collimators is made with the instrument raised, over that obtained when the observation is made through the central cube.
Observer
LIBRARY OF THE ASTRONOMICAL SOCIETY OK P AC FIG INTRODUCTION.
The mean observations
of these
1871
erroneous
this
to
of
011
the
(l
tan
1880)
collimation
is
+
which has
on
the
-
0" 47, while
the
correction
(derived from
The
been applied
is
+
ascensions
is
very
right
NPD '
s>
corrections
5
0"'30.
small
effect
and
of
equals
'
2
').
(See discussions
Royal Astronomical Society,
by Professor Turner
vols. xlvi.
and
in the
Monthly Notices
lii.)
In order to eliminate personality depending on the direction of measurement, a reversion prism, eye-piece has been frequently used in determining the readings for three bisections collimation, being taken with the direction of increasing readings
apparently towards the right (r), and three towards the gives the excess of the readings r over the readings 1. Observer
left (1).
The following
table
6
GREENWICH SECOND TEN- YEAR CATALOGUE OF STARS FOR North
Stars.
u
1887 1888 1889
1890 1891 1892 1893
1894 1895
1896
Mean
1890.
INTRODUCTION.
Corrections
to the
values of the Level Error found about 6 p.m., deduced from the observations made about Midnight. 9h to 15 h .
Month.
GREENWICH SECOND TEN- YEAR CATALOGUE OF STARS FOR
1890.
Discordances in Right Ascensions of Close Circumpolar Stars, from Observations above and below Pole respectively, 1887-1896. Polaris.
Year.
Cephei
5
1
.
Groombridge 1119.
INTRODUCTION.
ft,
.
t/j
-S
00
S
1
* I
I
f6 ^ ^ ^ ^8 3*
8
rO
^
1 1
SQ
-
^ ^ ll cs
^* ^
-I
^1 g^
IsJ
tq
s S
"-O
^^ Q co
o s
s 9
Q
3 & ^*. w ^ 10 ?'J ^ O ca
t^
1
"
i-
**i
s
A, r,
.
ft,
c^ <4
^
=C
ES
^
se
-sl 5-
^
GREENWICH SECOND TEN- YEAR CATALOGUE OF STARS FOR
10
The
Clock Error,
1890.
right ascensions of the clock stars adopted each year are given
For the years 1887 and 1888, the right ascensions of the clock stars depend on the Standard Right Ascensions of the 1872 Catalogue, for the years 1889 to 1B92, on the Standard Right Ascensions of the 1880 Catalogue, and for the years 1893 to 1896, on the right ascensions of tie 1890 in the Introductions to the
Greenwich Observations.
Five- Year Catalogue, using Struve-Peters' value of the constant of precession, and the Auwers'-Bradley proper motions. Correction.
Equinox
Greenwich Observations,
From it
the discussions of the position of the ecliptic in the appears that the right ascensions of the Clock Stars in
the ten years 1887 to 1896 require the following corrections
:
s
1887 1888 1889 1890 1891
The mean of these
0-046
1892
+0-072 +0-024 +0-093 +0-088
1893
+
8>
+0-040 +0-090 +0-042 +0-027 +0-040
1894 1895
1896
but no correction has been applied, as the uncertainty of the system of proper motions based on Bradley's equinox, and of the observations of the Sun due to the personality of the observers, leaves the determinais
047,
somewhat
The equinox of this Catalogue, therefore, is arbitrary. that of the 1872 Catalogue carried on by the use of Struve-Peters' precessions and Auwers'-Bradley proper motions. tion of the equinox
As
in the
Nine-Year Catalogue (1872), and the Ten-Year Catalogue (1880),
a
separate determination of the right ascensions of the clock stars has been made, in which only those observations are included where the group of clock stars extended over 12 hours at least. The total number of observations of clock stars (from Six-Hour
groups)
is
12,599, and of this
number 6128
are derived from
Twelve-Hour groups.
From
these data corrections have been determined to reduce the right ascensions of the Catalogue to those of the Twelve-Hour groups taken as standard.
The following
table exhibits the excess of the R.A. from the
above that of the Catalogue
The weights
are
for each star, together with the
computed from the formula ^T^> where
m
Twelve-Hour groups
number
and n
of observations.
are the
observations in the Twelve-Hour groups and in the Catalogue respectively.
numbers of
INTRODUCTION.
Corrections to the Right Ascensions of Clock Stars in the Second Ten- Year Catalogue to
reduce them
to
1896.
Star's
Name.
to the
Standard Right Ascensions from Twelve-Hour Groups, 1887
GREENWICH SECOND TEN- YEAR CATALOGUE OF STARS FOR
12
1890.
Corrections to the Right Ascensions of Clock Stars in the Second Ten-Year Catalogue to reduce them to the Standard Right Ascensions from Twelve-Hour Groups, 1887 to
1896
Star's
Name.
cont.
INTRODUCTION.
13
Corrections to the Right Ascensions of Clock Stars in the Second Ten- Yeat Catalogue to reduce them to the Standard Right Ascensions from Twelve-Hour Groups, 1887 to
1896
Star's
Name.
corit.
14
GREENWICH SECOND TEN- YEAR CATALOGUE OF STARS FOR
1890.
" In the column " Adopted Correction of the above table is given a smoothed coTre-ction derived from the mean excesses for each hour. This correction has been applied to the right ascensions of the Catalogue to obtain the Standard Right Ascensions of the
In forming these Standard Right Ascensions, no correction has been applied for the differences depending on north polar distance. Neither of these corrections has been applied to the right ascensions of the Catalogue itself. clock stars for 1890-0.
The practice of basing the right ascensions of the clock stars on the TwelveHour groups was introduced at Greenwich in the Nine-Year Catalogue for 1872. The following tables and the corresponding diagrams of the frontispiece show the effect of this process in eliminating the systematic errors of the places of clock stars derived from the earlier catalogues. The mean corrections to the right ascensions of the First
Seven-Year Catalogue (1860) and of the Second Seven-Year Catalogue (1864) are obtained from the introduction to the Nine-Year Catalogue (1872), p. 8, and to the other Catalogues from the direct comparisons with the Twelve-Hour groups given in the introduction of each Catalogue.
Mean Excess of the Right Ascensions of Twelve-Hour Groups for Hour of Right Ascension.
each
INTRODUCTION.
The Standard Right Ascensions
of the clock stars for 1890-0 based on
Twelve-Hour
groups are given on p, 64.
between the Twelve- Hour and Six-Hour groups are now so small no that they can longer with certainty be attributed to errors in the Six-Hour groups.
The
differences
An
independent verification of the accuracy of the Greenwich fundamental right ascensions is afforded by the following comparison between Newcomb's Fundamental Catalogue and the 1880 Ten-Year, 1890 Five-Year and Second Ten-Year Catalogues, the small differences in order of R.A. being entirely of an accidental character.
Standard Right Ascensions of Clock Stars of the Ten- Year Catalogue 1880, the Five- Year Catalogue 1890, and the Ten-Year Catalogue .1890, with Newcomb's Fundamental Catalogue 1900, reduced to 1890 with Struve's Precession and Auwers' Proper Motions.
Comparison of
the
(Arranged in order of K.A.)
GREENWICH SECOND TEN-YEAR CATALOGUE OF STARS FOR
16
.
II.
NORTH POLAR DISTANCES.
Microscope-Micrometer Screws.- New of them were reversed to eliminate the
steel screws effects
were applied in 1886, and three
of wear.
The
mean 1886 when the
errors
readings of the six microscope-micrometer screws, as determined in screws were new, in 1893, and in 1896 November, were as follows:
Error of the
1890.
of the
INTRODUCTION.
17
Table of new Corrections for Division Error to the Mean Reading of the Six Microscopes, and of Corrections to the Values previously adopted. The
Pointer Reading.
corrections recur after every
60.
GREENWICH SECOND TEN-YEAR CATALOGUE OF STARS FOR
18
Nadir
Correction.
point, determined stars in the years
The apparent
1887-1896, are as follows
be
discordance between the zenith
noticed
:
1887 1888
+0-01
1892
0-12
1893
0'34
1889
+0-07 +O-08 +O-07
1894
0-27
1895
O-3I
1896
O'34
1891
may
for
from observations of the nadir and from reflexion observations of
1890
It
correction
1890.
that the object-glass
0-25
was repolished and a new telescope-
micrometer screw introduced in 1891 October.
No
correction has been applied on account of these discordances.
It
should be
observed that the adopted zenith points depend essentially on the reflexion observations of stars, and that this discordance only enters into the observations on those nights when no reflexion observations are obtained.
As
be seen in the next paragraph, there appears to be a diurnal variation in the nadir, and it was considered possible that, as the reflexion observations were usually made soon after sunset, while the observations of the nadir were made at all will
hours, such a diurnal variation ance, but
this
was not found
would
to
some extent account
for the
above discord-
to be the case.
Diurnal Variations of the Nadir. show a diurnal change in the position
Observations taken in the years 1895 to 1899 of the nadir, the observations taken about noon
and midnight giving positive corrections to the observations made near the time of The observations were grouped as in the case of the levels (see p. 6), and the sunset. results for each
month from 1895
July, from which date three observations of nadir
were taken regularly on fine days, to 1899 December, are given in the following and exhibit the apparent corrections to the nadir about the time of sunset.
tables,
INTRODUCTION.
Diurnal variations of the Nadir. Corrections to the observations of the Nadir made about 6 p.m., deduced from the observations made about Noon.
21 h to 3 h Month.
.
19
GREENWICH SECOND TEN-YEAR CATALOGUE OF STARS FOR 1890.
20
R D
The following
Discordance.
observations
for
discordance
between
table gives the corrections applied to the direct the reflexion and direct observations for the
ten years 1887-1896. 1887 1888
+
0-012
1889
0-014
1890
0-013
1891
A
0-014 o-oio
+ + + + +
0-683
s i"
Z.D.
0746
sin
Z.D.
1893
0-677 sin Z.D. 0-556 sin Z.D.
1894
'536 sin
1892
1895
Z.D.
1896
-J-
+ + + +
0-062 0-057 0-057 0-065
0-056
+
+ + + +
0-576 sin Z.D. 0-703 sin Z.D.
0-546
sin
Z.D.
'4H
s i"
Z.D.
0-367 sin Z.D.
of special observations have been made to obtain information as to the A series of observations were made between 1893 December 3 cause of this discordance.
number
which the direct observation was taken immediately before the A discussion of these observations and of observation by reflexion instead of after it. D discordance by Professor Turner and Mr Thackeray is others relating to the R
and 1894 April
22, in
The following table given in the Memoirs of the Royal Astronomical Society, vol. li. showing the results of this series of observations is taken from the Introduction to Greenwich Observations, 1894,
p. cxli.,
where the
results of the separate observations are
given.
R D
Discordance from observations in which the direct observation Results for was taken first, compared with those taken in the ordinary manner, and with the valves computed from the formula +o"'i 14+ i"'ogi sin Z.D.
Approx. N.P.D.
INTRODUCTION.
is
its
R D
Discordance deduced from observations on different nights value as deduced from observations in which the reflexion observation
Comparison of with
the
taken immediately before the direct observation,
1895-1896.
Approx. N.P.D.
21
and with
the formula.
GREENWICH SECOND TEN-YEAR CATALOGUE OF STARS FOR
22
1890.
Value of Flexure found from observations in 1893, arranged according to
Range of Temperature.
Temperature at
the time
of observation.
INTRODUCTION. to the large in
common
number
of circumpolar observations, and the
number
of stars
it
contains
with the Cape Catalogue for 1890.
Taking the observations of Greenwich circumpolar stars first, and using the results given on p. 32, the following table exhibits the discordances in order of N.P.D. of the circumpolar observations with Bessel's and the Pulkowa refractions A comparison of columns 2 and 8 shows, on the whole, a better respectively. accordance when the Pulkowa refractions are used.
Comparison of North Polar Distances from Observations above
and below
Pole.
GREENWICH SECOND TEN- YEAR CATALOGUE OF STARS FOR
24
The
differences
1890.
between these
Catalogues for each 5 degrees of N.P.D. down to 120, and afterwards in small groups of convenient size, are given in the fourth column, using the refractions of the Tabulae Regiomontanse and colatitude 21"'90, and in the last column using the
The weights
are derived
Pulkowa
from the formula -
,
refractions
where
m
and colatitude 21 //> 7'5.
and n are the number of
observations at Greenwich and the Cape respectively.
Greenwich Ten-Year Catalogue, 1890, and Cape Catalogue, 1890, arranged in order of N.P.D.
Comparison between
the
the
25
INTRODUCTION.
To these data for the the Sun at Greenwich.
discussion of refraction should be added the observations of
The
corrections
to
the
adopted colatitude 2l"'90, using
Bessel's refractions (the values of z found in the ecliptic investigations in the
Observations), are as follows for the years 1887 to 1896 1887 1888
1889 1890
:
+0-08
1892
+0-09 +0-06
1893
0-05
1894
0-32
o-io
1895
+0-14
1896
o-oi
-
1891
The mean
o oy
of these corrections
+0-20
zero, giving a colatitude of 21
is
Greenwich
//-
90, while the
to 40 give a colatitude 2l"'92. Had the Pulkowa refractions circumpolars from been used the colatitude derived from the observations of the Sun would have been ;
22"'14, while vol.
liii.
From
pp.
the
//> circumpolar stars would have given 21 75.
(Memoirs R. A.
S.,
159-161.)
apparent that the Pulkowa refractions, as compared with Bessel's refractions, produce greater accordance between the Greenwich circumpolar observations and, what is of very great weight, a remarkably good agreement between this discussion it is
the Greenwich and Cape observations they introduce, however, an unexplained discordance into the Sun observations. The following table is given to enable those who :
may
wish to do
so, to
substitute the
Pulkowa
refractions in the north polar distances.
In the case of circumpolar stars, the corrections above and below pole should be combined according to the number of observations above and below pole, remarking that for observations below pole full weight is from 15 to given as far as N.P.D. 15 36* N.P.D. f weight; from 36 to 41 \ weight; and below 41 N.P.D. the observa;
tions below pole are not used.
GREENWICH SKCOKD TEN-YEAR CATALOGUE FOR
1890.
GREENWICH SECOND TEN- YEAR CATALOGUE OF STARS FOR
26
1
890.
Table of Corrections for reduction to Pulkowa Refractions and Colatitude 38 31' 2i"75. Barometer 3O in -oo.
N.P.D.
Thermometer 5o-o F.
Argument N.P.D.
INTRODUCTION.
27
from about 3500 observations from the 1894 ledgers, supplemented by the ledgers 1887 to 1896 for low stars, together with a comparison of the values previously found by
Mr
are given in the following table, from which it appears that the later The results have been smoothed by taking observations have a smaller probable error.
Stone,
means and means again of each consecutive
pair.
Probable Error of an Observation of N.P.D.
Z.D.
GREENWICH SECOND TEN- YEAR CATALOGUE OF STARS FOR 1890.
28
In the following table the weight
mean
is
given in the
first
column, the corresponding
2 discordance obtained by dividing ,J
to probable error) in the second,
obtained from the table on
p.
factor for changing from
in the third
depends being given in the fourth column.
Mean Discordance Weight given bj Formula.
in
mean
column the actual mean discordance the number of stars on which the determination
and
39,
by '845 (the
N.P.D. of Observations above and below
Pole.
INTRODUCTION.
Mean
29
Newcomb's Fundamental Catalogue, 1890, and the Greenwich Second Ten- Year Catalogue, 1890, for every 5 of N. P. D. from Discordances
Q- 1-20
N.P.D.
bettveen
GREENWICH SECOND TEN- YEAR CATALOGUE OF STARS FOR
30
1890.
the relative accuracy of these Catalogues, as the accuracy of the Greenwich Catalogue may be considered nearly the same throughout.
Mean
Discordances between the Greenwich Ten- Year Catalogue, 1890, and the Astronomische Gesellschaft Catalogues, 1875.
INTRODUCTION.
Mean
Excess of R.A. and N.P.D. above Pole, arranged in Groups of One Hour of R.A.
Limit of R.A. of
Group.
31
GREENWICH SECOND TEN-YEAR CATALOGUE OF STARS FOR
32
Mean n o
a ^5
8
I"
1890.
Excess of K.A. and of N.P.D. above Pole, arranged in Groups of
1
of N.P.D.
33
INTRODUCTION.
In these comparisons of the circumpolar observations the most noticeable features in the right ascensions are the persistent negative values of the Excess of R.A. above Pole from N.P.D. 6 to the extreme limit of N.P.D. observable, and the positive value from the pole to N.P.D. 5. Possible explanations of this are Pivot error (ii.) Different (i.) character of the observation of the close polars Diurnal changes in the position of (iii.) :
;
;
the instrument.
The discordances
in N.P.D. for the groups of
1
indicate that the systematic errors
which residual division errors are included) are very small, the mean value of the discordance (taken without regard to sign) for the groups from the pole to N.P.D. 30 being zt 0"'105, from which it results that the probable value of the systematic (in
error for a zone of
1
The mean value
of
N.P.D.
of the
it 0"-06
discordances
(taken without .regard to sign) for groups of 1
is
in
N.P.D.
for
groups of
1
hour of R.A.
O'^IW, which is somewhat larger than the value of N.P.D., though the weights and numbers of the stars are much is
larger for the R.A. groups.
GREENWICH SECOND TEN- YEAR CATALOQUE FOR
1890.
34
GREENWICH SECOND TEN-YEAR CATALOGUE OF STARS FOR
Circumpolar Stars.
No.
Star's
1890.
Excess of R.A. above Pole, arranged in order of R.A.
INTRODUCTION.
Circumpolar Stars.
d fc
m
I TO
Excess of R.A. above Pole, arranged in order of R.A.
35
continued.
36
GREENWICH SECOND TEN- YEAR CATALOGUE OF STARS FOR
Circumpolar Stars.
No.
Star's
1890.
Excess of R.A. above Pole, arranged in oi'der of R.A.
continued.
INTRODUCTION.
Circumpolar Stars.
o to 00
-
i CO
Excess of R.A. above Pole, arranged in order of R.A.
37
continued.
3.8
GREENWICH SECOND TEN- YEAR CATALOGUE OF STARS FOR
Circumpolar Stars.
No.
Star's
1890.
Excess of R.A. above Pole, arranged in order of R.A.
concluded.
INTRODUCTION.
Circumpolar Stars.
d to
!
03
Excess of N.P.D. above Pole, arranged in order ofN.P.D.
39
40
GREENWICH SECOND TEN- YEAR CATALOGUE OF STARS FOR
Circumpolar Stars.
No.
Star's
1890.
Excess of N.P.D. above Pole, arranged in order of N.P.D.
continued.
I
41
INTRODUCTION.
Circumpolar Stars.
No.
Star's
Excess of N.P.D. above Pole, arranged in order of N.P.D.
continued.
GREENWICH SECOND TEN- YEAH CATALOGUE OF STARS FOR
,42
Circumpolar Stars.
d "
1890.
Excess of N.PJ). above Pale, arranged in order of N. P.D.
continued.
INTRODUCTION.
Circumpolar Stars.
fir;
JK
Excess of N.P.D. above Pole, arranged in order of N^P.D.
continued.
44
GREENWICH SECOND TEN- YEAR CATALOGUE OF STARS FOR
Circumpolar Stars.
1890.
Excess of N.P.D. above Pole, arranged in order of N.P.D.
concluded.
INTRODUCTION.
Comparisons of the Right Ascensions within the limits of N.P.D. 50- 120, arranged in order of R.A. Catalogue...,.
45
46
GREENWICH SECOND TEN- YEAR CATALOGUE OF STARS FOR
1890.
Comparisons of the North Polar Distances, arranged in order o Catalogue
INTRODUCTION.
Comparisons of the Right Ascensions of the Astronomische Gesellschafi Catalogues. Catalogue.
Limit of
N.P.D.
.
47
48
GREENWICH SECOND TEN- YEAR CATALOGUE OF STARS FOR 1890.
ib ci
cc
^ O HH H O S OS
w PH O g
g9
INTRODUCTION.
49
50
GREENWICH SECOND TEN- YEAR CATALOGUE OF STARS FOR
1890.
INTRODUCTION.
51
52
GREENWICH SECOND TEN- YEAR CATALOGUE OF STARS FOR
1890.
INTRODUCTION.
53
GREENWICH SECOND TEN- YEAR CATALOGUE OP STARS FOR
1890.
INTRODUCTION.
55
56
GREENWICH SECOND TEN- YEAR CATALOGUE OP STARS FOR 1890.
INTRODUCTION.
p pj
*
57
58
GREENWICH SECOND TEX- YEAR CATALOGUE OF STARS FOR
1890.
INTRODUCTION.
59
60
GREENWICH SECOND TEN-YEAR CATALOGUE OF STARS FOR
1890.
INTRODUCTION. VII.
The
right ascensions
BINARY STARS.
and north polar distances
for each year's observations
reduced
to 1890'0, together with the fraction of the year and the number of observations, are n Cassiopeiee given separately for the following stars, on account of their orbital motion :
and Comes,
Ursas Majoris and Comes. for the value of proper motion given in the Catalogue.
Observed a
Sirius,
Procyon, and
Mean Annual
Results reduced
Canis Minoris, and
Xo- 253,
to
1
890 x> of
>}
The
results are corrected
Cassiopeia}, a Canis Majoris,
Ursce Majoris, corrected/or
Proper Motion,
GREENWICH SECOND TEN-YEAR CATALOGUE OF STARS FOR 1890.
62
EXPLANATION OF THE SEPARATE COLUMNS OF THE
YIIL
PRINTED CATALOGUE. The No.
is
the ordinal
number
of this Catalogue for the stars arranged in order
of Right Ascension.
Columns 2 and
two other Catalogues of
3 contain references to
stars, viz.,
Auwers'
and the Groombridge Catalogue, 1810. The star's name is taken from one of the authorities given on the back of the title-page facing the Catalogue, edition of Bradley
the order of preference being the order of mention of the authority.
The magnitudes
from the following sources in the order given the Harvard Photometry (marked *) the Catalogues of the Astronomische Gesellschaft or the Bonn Durchmusterung (unmarked) Struve's Stellarum Duplicium Mensurse are taken
:
;
;
Micrometricss for double stars (marked t) the Uranometria Argentina, the Southern Meridian Photometry (Harvard), the Argentine General Catalogue, 1875, and the Cape Catalogue for 1890, and for a few stars from other authorities (marked j), the ;
In the case of variable stars, the limits authority in each case being given in the notes. of magnitude and the period given in the notes are taken from Mr Chandler's Third
The Catalogue of Variable Stars (Tlie Astronomical Journal, vol. xvi. No. 379). of double stars the usual designations in double star catalogues are given in the notes for double or multiple stars, whether separated or not in the Transit-Circle.
names
The Mean R.A. 1890'0 has been found by combining the Annual Catalogues of Greenwich Observations from 1887 to 1896. The Mean Date
results
given in the
expressed in years and decimals of a year reckoned from 1800.
is
The Number of Observations gives the aggregate number of all the observations in the different years above and below the pole respectively, which are combined with equal weights to form the mean right ascension.
The "Annual Precession 1890'0" and the "Secular Variation 1890'0" have been computed by the help of Folie's Douze Tables pour le Calcul des Reductions stellaires, in
which Struve's constant of precession
by
the formula, S
3
-0725
-f-
i"-3369 [log.
=
is
used.
The precession
0-12611] sin R.A. cot N.P.D.
and the secular variation by the formula, A + B cot N.P.IX
+
C
cot 8 N.P.D.,
;
in R.A.
is
given,
INTRODUCTION.
63
where
A= B
c^'ooigo
=*
+
o s< oo65o sin
s
o -ooo57 sin E.A.
C = +o
s
-oi3OO sin 2
The second term of the precession
is
+
2
E.A.
o^ozgSy
cos
E.A.
E.A.
computed from these tables, aud the These formulae every minute of R.A.
readily
quantities, A, B, C, are therein tabulated for
correspond essentially with those used in previous Catalogues.
The R.A. and N.P.D. have been taken for 1890'0 to 1 s and calculations were made in duplicate and carefully compared. The Annual Proper Motions
To the columns
2"'0 respectively.
The
are taken from the authorities given on p. 48.
same remarks apply generally as in the case of R. A., except that, in combining observations above and below the pole, the following For stars whose N.P.D. does not exceed 15, the observations above weights are used. and below pole have equal weights. From N.P.D. 15 to N.P.D. 36, those below pole relating to N.P.D., the
have the weight f for each observation from N.P.D. 36 to N.P.D. 41, those below pole have the weight ^ for each observation beyond 41 N.P.D., the observations below ;
;
pole are not used in forming the
Mean N.P.D.
The "Annual Precession 1890'0"and the computed is
1890'0. "
Secular Variation 1890'0" have been
as explained in the case of the Right Ascensions.
The
precession in N.P.D.
given by the formula, 2o"-o542 cos E.A.,
which
is
taken directly from the tables
;
A + 1
and the secular variation by the formula, Bi cot N.P.D.,
where
A = B = The
quantities
A
1
1
+o"-oo86
cos
1
+o"- 1 950
sin 2
and B 1
R.A. +o"'448o E.A.
sin
E.A.
are given directly in the tables for every
minute of R.A.
GREENWICH SECOND TEN- YEAR CATALOGUE OF STARS FOR
64
Standard Mean Right Ascensions of Clock- Stars for based on Twelve-Hour Groups. Star's
Name.
1890.
COMPLETE LIST OF THE
EERATA THE GEEENWICH CATALOGUES FKOM
IN
Si: Greenwich Six-Year Catalogue of Stars for 184.0
Greenwich Six-Year Catalogue of Stars f01- 1840. PAGE
2.
Seconds of Mean R.A. 1840 Jan. i, for 40^87, read 8 8 4o 73 Annual Precession R.A. /or -}~3 'iz4, read Seconds of Mean N.P.D. 1840 Jan. i, 4-38-076 for 58" -62, read 58"'68. ;
,
;
63.
Seconds of Mean N.P.D. 1840 Jan.
for 46"'4S, read
i,
5 6"- 4 8.
Annual Precession
139.
No.
139.
in R.A.., for
+3 S '379>
read
+3 s 'o64.
in Bessel's Bradley, insert 328.
,
;
21
read 33.
.,
20'.
53"'g8
Annual Precession
;
140.
i6"-Xz 7 N.P.D., insert Mean Year for N.P.D., dele No. of Obs. in N.P.D., dele; Mean N.P.D. 1840 Jan. i, for 33. 20'. 53" '98, read 33. 21'. Annual Precession in N.P.D., dele.
174.
Seconds of Mean
in
.
;
IJ.A.
1840 Jan.
for 55 8- 32, read
i,
558-23.
181.
Flamsteed's Number, &c., for 56 Arietis...
read 58
Arietis...^.
192.
Flamsteed's Number,
Inc.,
for 33
read 37
Persei...i|i,
Persei...^.
252.
17
298.
Flamsteed's Number, &r., for 76 Tauri...i, read 97 Tanri...t; Mean N.P.D. 1840 Jan. i, for 71. 36'. 2i "'46, read 71. 26'. 2i"'46.
Mean R.A. 1840 h 5
312.
i6
18
318. 17
320.
.
40"". (o
Jan.
i,
far
5
h.
44
m
(o
.
8 ),
read
8 ).
Seconds of Mean N.P.D. 1840 Jan. "
i
,
for
2,6" 37 ,
read
No. in Baily's Flamsteed, for 665, read 865. Dele the observation and numbers.
19
321.
19
330.
Mean Year for R.A.,/or 1839, read 1838 Seconds of Mean R.A. 1840 Jan. i,for i4 8- io, read i7 8 '4i. Seconds of Mean N.P.D. 1840 Jan. i for z^" 'go, read
331.
27" -24. Dele the observations and numbers.
&
19
;
,
No. of Obs. in N.P.D., for i, read 3 Mean N.P.D. 1840 Jan. i, for 59. 57'. 27" '09, read 59 58'. 9"'7i. 355. Flamsteed's Number, &c., insert 49 Aurigie Baily's Flamstted, insert 915 Bessel's Bradley, insert 959 Piazzi, insert VI. 146 Taylor, insert 2543 Mean h R.A., 1840 Jan. i, insert. 6 25. (io 8 ) Mean Year for N.P.D., insert 1838; No. of Obs. in N.P.D., insert Mean N.P.D. 1840 Jan. i, insert 5 61. 51'. 36"'io Annual Precession in N.P.D.,
19
332.
;
.
18
;
;
;
;
;
.
;
;
;
insert
20
&
21
378.
in
Groombridge's Catalogue, insert 1259. for N.P.D., for 1841, read 1839 No. of Obs. in N.P.D., for i, read 3 Seconds of Mean N.P.D. 1840 Jan. i, for 40" '62, read 4i"'i3. Mean R.A. 1840 Jan. i, for 7 h 2 m i48- 2o, read
Mean Year
;
;
.
h
.
i
m
.
+2" '197.
DcJe the observations and number?.
GREENWICH SECOND TEX-YKAR CATALOGUE FOR
1890.
.
8 i4 '2o.
Dele the observation and numbers.
Mean Year
No. in Bessel's Bradley, dele the number. Mean Year for N.P.D. insert 1840; No. of Obs. in N.P.D., insert 8 Mean N.P.D. 1840 Jan. i, for
33.
No.
7
103.
140.
&
continued.
NO.
3
16
1840.
for R.A., insert 1836; No. of Obs. in Seconds of R.A. 1840 Jan. i,for R.A., insert z s 8 (4o ), read 4i '56 ; Annual Precession in R.A., ;
insert
ERRATA.
66 Greenwich Six-Year Catalogue of Stars for 1840 PAGE.
NO.
continued. [
Greenwich Twelte-Year Catalogue of Stars fur 1845
contd.
ERRATA. Greenwich .Twelve-Year Catalogue of Stars for 184.5
(cxxxvi)
1389.
Secular
1434.
+"'475Star's Name,
(cxxxviii) 1443.
1472.
(cxli)
1507.
(cxlii)
Variation
Value of
I,
N.P.D. for
in
read
o"'475,
,
-..
Seconds of Mean N.P.D. read 41" -99.
1840 Jan.
Mean R.A.
h for i6
1840 Jan.
for 36""99,
i,
i,
27
.
m
.
(o
s
1562.
+08-0115. Reference Number to Pond, for 773, read 774.
Variation
in
read
),
(cxlv)
Secondsof Mean N.P.D. 1850 Jan. i,for 44"'S5, read
(Ixv)
664.
Secular Variation of Precession
(Ixxii)
786.
Star's
and 1633. Magnitude of and 7 respectively.
in
N.P.D., insert
(cliv)
1739.
972.
(Ixxxvi)
1048.
(clvii)
1784.
Log. /, for 0-06159, read 0-09612 I37"'52i, read I35"'i36.
(clviii)
1809.
Log. g, for 1-44209, read 1-44309; Value of
288-69.
1062.
(xciv) ;
Value of
V,
I,
for
878-092, read 878-015. g, for 1-44208, read 1-44308; Value of 878-084, read 878-007.
.
,
+
I,
for
Variation of Precession in .N.P.D., o"*475, raid +o" -475.
Secular
(e)
1294.
Value of
I',
(oii)
1316.
Value of
I,
:
for I35"*i36, read i^f'^zi. for 868-573, read 868-636.
Reference to footnote, for 1404,
(cviii)
fer
" These stars are designated in the B.A.G. as 7- Sagittarii and -f Sagittarii."
_Add Footnote
and
for
1172.
Log.
1
Name, for 31 Bobtis...^ read 51 Bobtis.../* Seconds of Mean R.A. 1850 Jan. i,for 368-59, read 388-16; Annual Precession in R.A., /or 38-546, read +38-022 No. in Greenwich Twelve-Year ;
/or 293-56, read
i,
1
Star's
Catalogxie, dele 1363. (Ixxxviii)
Seconds of Mean R.A. 1845 Jan.
z Corvi...-y, read 2 Corvi....
Name, for
Reference to footnote, for 89, read 889.
(Ixxxiii)
star, insert 8-9, 8-9,
1631, 1632,
1407,
1408,
read
1407, for
1608,
read
1404, 1407.
g, for 1-44209, read 1-44309; Value oil, for s 878-080, read 87 'oo3.
Log.
(clx)
1831.
Value of
(clxv)
1911.
(clxv)
1918.
(clxviii)
1979.
Mean N.P.D. 1845 Jan. i, for 75. o'., read 74- 55'Mean N.P.D. 1840 Jan. i,for 33. n'. 7"-z8, read 33. 12'. 7 "-28. Delf- Mean R.A. 1840 Jan. i, Mean Year, and No.
I,
Dele the footnote.
Reference to footnote, for 850, read 847.
(Ixxviii)
read
R.A., for +08-0015,
(exlviii)
1811.
NO. 600.
(Ixxvi)
Secular
(clviii)
PAGE.
for 843-495, read 888-495.
'535-
1810.
contd.
(Ixii)
54" '8 5. dele
(cxlii)
(clviii)
Greenwich Six- Year Catalogue of Stars. for 18,50
contd.
NO.
PAGl".
(cxxxv)
67
Last column, No. following
(eix)
1408.
for 868-573, read 868-637.
Greenwich Seven- Year Catalogue of Stars for 1860.
of Obs.
1982.
Mean R.A. 1840
Insert
Mean (clxxiv)
2094.
Star's .
',
Jan.
22 h
i,
2
.
m
Introduction. Line 8, for e, read e l ; line 9, for i -2 -f- cos R. A. cos N. P. D. read i '2 cos R. A. cos N.P.D.
{xiii} .
158*17
;
and No. of Obs., 2. Year, 1840 hi serf. Piazzi XXIII. 48. Logarithms of Name, g, h. iiii'l the value of/, for the numbers given
,
;
0*10409 (clxxv)
2094.
]
Mean N.P.D.
0*07372
1*44640
|
1845 Jan.
Logarithms of
e',
f,
i,
|
0*08908
g', h',
j
848*368
read 67. i'.; and the value of I', for
for 67.
15.
Insert Footnote
{xvii}
40.
Secular Variation of Precession in N.P.D., insert
{xviii}
45.
Mean N.P.D. 1860 Jan. 34. 14' Mean Year
(clxxviii)
2148.
;
9-85715 9-91246 0-73041 9-99717 I4o"*283 Seconds of Mean R.A. 1845 J an '> for 258-88, read 258-79; Log. g, for 1-44607, read 1*44762; Value of Iffor 808*793, read 808-673. |
:
+o"-o68.
6'.,
the numbers given substitute
" The magnitude has been taken from the Greenwich Observations."
{xvi}
substitute
|
i,
for
for
34.
5i"-26, read
13'.
N.P.D., dele
;
No. of
Obs. in N.P.D., dele.
|
-
{xviii}
46.
Seconds of Mean N.P.D. 1860 Jan. i, for 5i"'95, read 5i"'92 No. of Obs. in N.P.D., for 33, read 34. ;
{xx}
96.
Annual Precession
in
R.A., for +38-125,
of
Precession
read
+3 S> "7. {xxii}
148.
Variation
Secular
+08-0189, read
Greenwich Sij'-Year Catalogue of Stars for 1850. (xxxvi)
151.
(xxxviii) (xliv)
288.
Annual Proper Motion
390.
3
in
R.A.,/o?"+o
s
482.
Log h,for 0*07739, read 0*07839. 848-232, read 848*164.
3
i,
for 35"'O7,
i,
for 2i"'Z7,
8" -07.
191.
Seconds of Mean N.P.D. 1860 Jan. read 26"'S3.
\xxiv}
196.
Mean N.P.D.
1860 Jan.
i,
for 37.
3'.
42"76, read
37 .*'. 41" -76. i,
for 338-41, read
308-41. (liv)
R.A., for
Seconds of Mean N.P.D. 1860 Jan.
{xxiv} read
-o88,
'oo8.
Seconds of Mean R.A. 1850 Jan.
188.
read
Log e',for 0-92829, read 9-92829. Reference to footnote, for 204, read 205.
+o (1)
{xxiv}
in
+o stoi79.
Value of
I,
for
{xxxi}
295.
{xxx}
303.
/, for '85587, read 9-85587. Mean R.A. 1860 Jan. i,for 4''. 5. Log.
4 h.
ftm.
,8- 04 .
578-24, read
ERRATA.
68 Greenwich Seven-Year Catalogue of Stars for 1860 PACE.
NO.
{xxxii}
328.
MeanN.P.D. i86ojan.
343.
Seconds of Mean R.A. 1860 Jan. i,for
{xxxii}
i,
coutd.
for 12.1.}'., readizo 8 8 '94,
.
3'.
{xxxii}
{xxxii}
347.
348.
in
Variation of Precession read -|-o 8 'oioo.
in
Secular
504.
Proper Motion in R. A., for
{xliv}
569.
Star's
577.
Insert Footnote:
Piazzi
Name, for
+o s 'oo3, VII.
R.A.,
for
read
08-003.
Canis Minoris
and {xliv}
591.
1127.
Star'sName, for Piazzi XIII. 299, read Piazzi XIII.
{ixxii}
i39-
Star's
{ixxvi}
1237.
Log. f,for 0-08712, read 0-05712.
{ixxxviii}
1461.
Log.
{xc}
149.
Magnitude, for
{xc}
'494-
Secular Variation o s- 4454, read
{xc;
1516.
Seconds of Mean R. A. 1860 Jan. i,for 5i s '6i, read
306.
"This
star is the Variable S. the limits of variability are 7-5
;
13, the period 335
Name, for
Star's
{ixxii}
read Piazzi
267,
VII. 67. {xliv}
NO.
52 {xciii}
days."
593.
No. in Strove,
{xlvi}
60 1.
Insert
Piazzi VII. 755, read Piazzi VII.
{xlvi}
{xlvi}
{1}
{lii}
{liv}
U 607.
622.
694.
733.
780.
dele 918.
Footnote:
{xciv}
{xcvi}
"This
star
is
Geminorum."
1570.
Variation c^'oisS, read
Precession o s 'oi88.
in
of
Mean N.P.D. 1860 Jan. i, for 37. 49'., read 37. 5'Mean N.P.D. 1860 Jan. i, for 52. 57'., read 52. 58'. Seconds of Mean R.A. 1860 Jan. i, /or 488-98, read
Log. /, for 9-80394, read 9-80217 for 86"-8o6, read 86"-87i.
i,
;
forzS"'oo,
Value of
No. in Lalande (B.A.),/or 21898, read 21899. Star's
{ixii}
949.
Magnitude,
{ixii}
957.
Secular
{ixiv}
975.
Proper Motion in R.A., insert
975.
Proper Motion in N.P.D.,
dele.
I',
in
R.A.,
Groom-
Name, for
5 Sagittse,
in
read 15 Sagittse. 8
3 '334,
read
for +38-238,
read
R.A., fur
Footnote, del:
{civ}
1762.
Magnitude, dele
{civ}
1772.
Annual Precession
;
in
R. A.
,
+38-231. {cix}
1844.
The numbers Piazzi's,
in the
columns referring
Groombridge's, and Pond
to Bradley's,
s
Catalogues,
belong to No. 1845.
+o s- o48.
{ex}
1885.
Proper Motion in R.A., insert
{cxi}
1885.
Proper Motion in N.P.D., insert
{cxv}
1963-
Value of
{cxiv}
1971-
Proper Motion in R. A., insert
/',/<
i3i"'859,
{cxv}
1971.
Proper Motion in N.P.D.
VXvi}
2003.
Seconds
of
rvjorf
,
-
o" o5.
i3i"'589.
+o 8- o84. o"'oi.
insert
Mean R. A. 1860
Jan.
i,
3 for 3O 77, read
for
o s 'i52.
Greenwich Seven- Year Catalogue of Stars for 1864.
o" -07.
insert
{xii}
6-3,
read
7.
No.
in Lalande, insert
{xii}
27.
No.
in Lalande, insert 459 (B.A.).
{xv}
45.
No. in Bessel's Bradley, for
{xvi}
93.
No.
{xix}
123.
No.
145.
Annual Precession
{xii}
Name, for Piazzi XIII.
221, read Piazzi XIII.
Piazzi XIII. 228, read Piazzi XIII.
Log. g',for 1-63220, read 1-63127 8 4" '675, read Zj'-jjj.
;
Value of
I'
Jor
No. in Lalande,/or 127, read 125.
26.
6-5.
263. jlxxiii}
2894, read
Name, for Groombridge
Footnote, dele.
228.
1122.
for
308-29.
Low. h,for 0-08591, read 0-08501.
Name,/or
R.A.,
Piazzi XI. 247, read Piazzi XI. 207.
Variation of Precession 8 08-0076, read -(-o 'oi4i.
Star's
in
biidge 2984.
R.A., for
943.
1118.
and the
+3 8 '334-
Secular
Star's
g', h',
Precession
1665.
Magnitude, for
for
08-0017.
{xcviii}
904.
{ixx}
Star's
of
267, read 277.
{ixii}
1117.
1625.
Variation 4-08-0017, read
Secular
Ammiil Precession
{ixi}
{ixx}
f,
Log. e',for 9-09029, read 0-09029.
Seconds of Mean N.P.D. 1860 Jan. read z^"yj.
1097.
R.A.,
4 6.
Star's
Name, for
in
'
1635.
819.
{ixx}
8 "9.
of Precession o s "8454.
1627.
{ivi}
1078.
read
{xcvi}
Log. e',for 9-99786, read 9-97786.
{ixviii}
6,
{xcvii}
780.
{ixr}
8
for 9-12659, read 0-12659.
Name, for Piazzi VII. 267, read Piazzi VII. Column "Hour and No. in Piazzi," for 277.
Star's
{lv}
848.
e',
1538. \ Transpose the logarithms of e', value of/' for these two stars. 539- /
the variable
438-12.
{lix}
read Piazzi
52.
1
'55-
{xlv}
XIV.
Piazzi
Name, for XIV. 22.
R.A., for
+o8 'oo25, {xl}
contd.
PAGE
read
98-51.
Secular Variation of Precession +o s 'oo44, read -|-O 8 'OO76.
Greenwich Seven- Year Catalogue of Stars for 1860
{xviii}
in Bessel's
-
3
33,
).
read 39.
Lalande, insert 1299 (B.A.).
in
+
427 (B. A.
3 22.
Bradley, insert 116. in
R.A., for
+3 S> 222,
read
ERRATA Greenwich Seven-Year Catalogue of Stars for 1864
contd.
PAGE.
No. iu Bessel's Bradley, Star's
insert 148.
Name, for 64 Andromeda
1
... |,
read 46 Andro-
69
70
ERRATA. Greenmi'li
71
ERRATA. Greenwich Ten- Tear Catalogue of Stars for
1
Greenwich Ten-Year Catalogue of Stars for 1880
8 80.
PAGE. NO.
PAGE.
Mean
6
23 18
33.
25
870.
27
1231.
32
1963.
41
3563.
44
3915.
Corrections to Right Ascension, &c., Limit of R.A. h to h S 24 , for +8-014, read 'oi3.
+
Mean N.P.D.
iSSo'o, for 58"-68, read 58"'8o. Excess of N. P. D. above Pole, for +o"'47, read -\-o"'$g. Mean N.P.D. i88o'o,/or $2"'/n, read $2"'<)i. Excess of N.P.D. above Pole, for o"'26, read o"'j^.
45"'49, read 4$"'jo. Excess of N.P.D. above Pole, for +o""85, read -|-o"'64. Mean N.P.D. i88o'o,/or o"'2S, read o"'4O. Excess of N.P.D. above Pole, for +o"'i7, read +o"'o5.
Mean N.P.D.
46
1231.
Excess of N.P.D. above Pole, for +o"'85, read +o"-64.
47
33.
Excess of N.P.D. above Pole, for +o""47, read +o""59.
47
870.
47
iSSo'o, for i4""33, read n"'2,j. Excess of N.P.D. above Pole, for o"'o9, read
o"'73-
3979.
Excess of N.P.D. above Pole, for
o"'o9, read
o"'i5.
48
1963.
Excess of N.P.D. above Pole, for -\-o"'ij, read +o"'c>5.
48
3915.
Excess of N.P.D. above Pole, for
51
3563.
Excess of N.P.D. above Pole, for
{iii}
{iii}
33.
39.
No. of Obs. in N.P.D. below Pole, for
{xi}
331.
Seconds of
{xii}
378.
Star's
o"'49, read
1
{iv}
78.
80.
read
(2).
Name./orW.B.
(2) II.
581, raid Piazzi II.
read 33.
No. of Obs. in R.A.,/or
{xiii}
418.
{xiii}
422.
Star's
442.
3,
Name, for W.B.
1016, read
(2) II.
Star's
Groom-
220 (ist Star), read Piazzi
for Piazzi II.
Name,
{xiv}
443.
Star's Name, for Piazzi II. Piazzi II. 222.
{xiv}
445.
Star's
Name, for W.B.
(z) II.
220 (2nd Star),
read
1223, read Piazzi II.
223.
448.
Seconds of Mean N.P.D. i88o'o, for 47""74, read 47"- 7 8.
456.
Seconds of Mean R.A.
o"'33.
{xiv}
R.A. 1880-0, for +08-0775,
Annual
278-428.
.
474.
Mean R.A.
Seconds of
1880-0, for 268-882, read in R.A., for
Precession
read +28-5659.
9,
{xiv}
1
8 80 -o,
sfor 23 6i5^ read
238-281.
{rvii}
591.
Seconds of Mean N.P.D. 1880-0, for &"'<)S, read
595.
Secular Variation in N.P.D. iSSo'o./or +o"'276,
+o s 'o6i9.
5 Z "'97-
Seconds of Mean N.P.D. 1880-0, for 58"'42, read Seconds of Mean N.P.D. iSSo'o, for
T.-J"^\,
read
{xvii}
read
-
297.
{xix}
Seconds of Mean N.P.D. i88o'o,/or 3i"'49> read
{xx}
684.
Seconds of Mean N.P.D. i88o-o,/or24"-84, read
3'"'53-
Name, for Groombridge 96, read Piazzi 0, 114 Seconds of Mean N.P.D. 1880-0, for 29"-8o, read 29""83.
Star's
+o"
661.
2 7 "'5I.
{iv}
2,
8 58 -8z7, read
Seconds of Mean N.P.D. i88o'o, for 9"'6i, read
.
Secular Variation in
1880-0, for
408.
;
.
Mean R.A.
II. 220.
Clock-Stars, &c. Piscium, Assumed Mean R.A. i88o'o, h m 88-938, read 23 h 53. 88-947. for 23 53
read
319.
{xiv}
Assumed Mean Name, 5 Argus, read p Argus R.A. 1880-0, for 8h. z". 268-981, read 8 h 2 m 258-981.
i.
{x}
+o"73, read +o"'46.
.
{iii}
Seconds of Mean N.P.D. 1880-0, for 58"'37, read
io"'o4.
o"'i5.
o"'26, read
.
301.
bridge 566.
Excess of N.P.D. above Pole, fur
57
{x}
{xiii}
3979.
56
Seconds of Mean N.P.D. i88o'o,/o?- 24"'oo, read 23"- 9 4.
105.
o"'33.
44
for
300.
588-527.
Mean N.P.D. i88o'o,/or 59"76, read 6o"-c>3. Excess of N.P.D. above Po]e,/or +o"73, read +o"'46.
Star's
{x}
58"-2o.
Mean N.P.D. i88o'o,/or
Mean N.P.D. i88o'o, for 2i"'84, read zi"'68. Excess of N.P.D. above Pole, for "'4<), read
contd.
NO.
24"- 9 i.
;
{xxii}
775.
Seconds of Mean N.P.D. i88o-o,/or ij"'oi, read 1 7" -05.
{xxiii}
826.
Seconds of Mean N.P.D. i88o-o,/r 4z"'zi, read
{xxiv}
870.
Seconds of Mean N.P.D. 1880 'o, for 52"'4Z, read
899.
Seconds of
Seconds of Mean N.P.D. iSSo'o, for 34" -09, read 34"-i2.
4 z"-24. {vii}
180.
Seconds of Mean N.P.D. i88o'o,/or 39""63, read
5 2"-8 5 .
Seconds of Mean N.P.D. iSSo'o, /or zo" 56, read -
{vii}
190.
{xxv}
Mean N.P.D.
i88o'o, for 8"'93, read
8"'96.
{vii}
193.
Seconds of
Mean N.P.D.
1880-0, for ii"'82, read
{viii}
213.
Seconds of
Mean N.P.D.
1880-0, for 49"'o8, read
{viii}
219.
Mean N.P.D. 1880-0, for 71. 71. 27'. io"-i4.
{viii}
222.
Annual Precession
in
26'.
io"'i4, read
R.A., for +38-5298, read
+38-5288.
{x}
297.
Seconds of Mean N.P.D. 1880-0, for 48""32, read 4 8"'4o.
{xxvi}
922.
Seconds of Mean N.P.D. 1880-0, for I3"'34, read
{xxvii}
967.
Seconds of Mean N.P.D. i88o'o, far 2i"'78, read
{xxviii}
1037.
{xxxii}
1169.
Seconds of Mean N.P.D. i88o'o, for 7"'66, read 7" 7 1. Seconds of Mean R.A. 1880-0, for 518-546, read 518-516; Seconds of Mean N.P.D. 1880-0, for are due to iz"'33, read iz"'37. These corrections orbital motion of Sirius, as computed from Auwers' elements (Pub. der Astron. Gesellsch., No. VII.).
72
ERRATA.
Ureenurich'JTen-Year Catalogue of Stars for 1880 PAGE.
NO.
{xxxii}
1172.
contd.
Greenwich Ten-Year Catalogue of Stars for 1880 PACK.
contd.
NO.
Seconds of Mean N.P.D. i88o'o, for 3o"7o, read 3"'75-
{hi} {liii}
2003.
Seconds of Mean N.P.D. i88o'o, for 37"7o, read
{liii}
2005.
Seconds of Mean N.P.D. i88o'o, for 2i"'58, read
1318, read Piazzi
{liii}
2008.
Mean N.P.D. iSSo'o. for 68. 68. 6'. 8"- 4 2.
Footnote, for The magnitudes given in B.D. are 8 '6 and i 7, read The magnitudes given in Struve's Mensural Micrometrico} are 2-7 and 3-7.
{liii}
2023.
Seconds of Mean N.P.D., i88o'o,/or 33"'85, read
{Hv}
2061.
Seconds of Mean R.A., for if'ijj, read 9 S '977 Seconds of Mean N.P.D. i88o'o, for 48"'i4, read 48"-j8.
{liv}
2064.
Seconds of Mean N.P.D. i88o'o, for 3 6" -30.
{lv}
2102.
Seconds of Mean N.P.D. i88o'o, for 43"'23, read
{lv}
2103.
Seconds of
{xxxiii}
1231.
Seconds of Mean N.P.D. i88o'o, for 45"'94, read
{xxxiii}
1237.
Dele observation in N.P.D.
{xxxiv}
1278.
Star's
1963.
Seconds of Mean N.P.D.
i88o'o, for o"-tf, read
"'43-
37"'5S-
1280.
{xxxiv}
Star's
2i"- 43
Piazzi VI. 97, read Piazzi VII. 97.
Name, for
Name, for Groombridge
VII. 92.
{xxxv}
g
'
I -!
*'' (,
{xxxv}
1311.
Seconds I 3
{xxxv}
1313.
{xxxvi}
1358.
Mean N.P.D.
of
"-2 7
Seconds of Mean N.P.D. 1880-0, for 9"'5o, read
{xxxviii}
1409.
Seconds of Mean N.P.D. 1880-0, for 43"'84, read
9"'59-
44"'M{xxxix}
1448.
Seconds of Mean N.P.D. i88o'o, for io"'i8, read
{xxxix}
1471.
Seconds of Mean N.P.D. 1880-0, for i3"'33, read
{xl}
1513.
Seconds of Mean N.P.D. i88o'o, for 38"'i7, read 3 8"- 4 6.
io"'44.
{xli}
1559.
1575.
Seconds of Mean N.P.D. 1880-0, for 58"'28, read
{xlii}
'598.
Animal Precession
{xliii}
1602.
Secular
5 8 "'44-
Variation
in
R.A., for
08-0040,
2134.
Seconds of Mean N.P.D. i88o'o, for 46"'42, read
{Ivi}
2154.
Annual Precession
Star's
1627.
Seconds of Mean R.A.
1768.
Star's
Name, for
{xlvii}
|
1773.
i
R. A.
oh. 59x1.
1880-0, (
for
io h .
59"!.
(28
s ),
1815.
Star's
Name, for
{xlviii}
1840.
Star's
Name, for
1861.
read
in
R.A., for
+o
read
2171.
Annual Precession
{ivii}
2184.
Seconds of Mean N.P.D. i88o'o, for 46"'34, read
2192.
Seconds of Mean N.P.D. i88o'o, /or 24"'28, read "'
1253-
Secular Variation in R.A., for
s
'2999,
4 6 "'39{ivii}
24
3 8.
+o s-oo83,
read
+08-0183. Secular Variation in R.A.,
2284.
o s 'oo74, read
for
-f- 08-0074.
{ixiii}
2403.
Seconds of Mean N.P.D i88o'o, for ^"-79, read
{ixiii}
2423.
Star's
42""92.
Name, for W.B.
XV.
(2)
XV.
750, read Piazzi
142.
{ixiii}
2433.
Secular Variation in R.A., for
{ixiii}
2434.
Secular
+o
s
'4o83,
read
"4073,
read
Secular Variation in R.A., for +08-0123,
read
Variation in
R.A., for
+o
s
+08-3782 {ixiii}
2435.
+08-0136.
Piazzi IX. 59, read Piazzi XI. 59.
Piazzi XI.
III.,
{ixiii}
2437.
Seconds of Mean N.P.D. i88o'o,/or 2o"'9i, read
{!}
2692.
Seconds of Mean N.P.D., /or 3i"-o3,
{ixxi}
2726.
read Piazzi XI.
in. {xlix}
-j-2 'o397,
{Ivii}
read
33 8).
{xlviii}
R.A., for
i88o'o, for 118-586, read
Name,/o?- RadclilTe 2617, read Piazzi X. 228.
Mean
s
in
2 S '0397.
128-586.
{xlvii}
o s 'oi25,
46""48.
Oeltz. Arg. (S.) 10075, Tead Piazzi
1607.
IX. 67. {xliii}
{Ivi}
read
+oa '0040. {xliii}
Secular Variation in R.A. i88o'o, for read -)-o s 'oi25.
i6"'2i4, read
N.P.D., for
46"'47, read
2122.
{lx} in
Mean N.P.D. i88o'o,/or
{Ivi}
{lix}
{xlii}
read
4 6"76.
Seconds of Mean N.P.D. i88o'o, for 2i"'83, read 2i"'8o.
^(>"-oy,
43"'3-
Seconds of Mean N.P.D. i88o'o,/or 5o"'oo, read
1380.
read
;
.
{xxxvii}
8"'42,
'.
32" -85.
1880-0, for iz"'&7, read
Seconds of Mean R.A. i88o'o, for i s- i28, read s i 'no; Seconds of Mean N.P.D. 1880-0, for These corrections are due to 6"'63, read 6"'6<). orbital motion of Procyon as computed from Auwers' elements (Astron. Nach., vol. Iviii. Nos. 1371-1373)-
.
Secular Variation in N.P.D., for +o"'037,
read
+o"'027.
23"- 9 i. rearf 3o"'o3.
Seconds of Mean N.P.D. 1880-0, for 59"'63, read Secular Variation in N.P.D., for 5 9" -6 1 o"-i35, read +o"-i 3 5. ;
{xlix}
1863.
Star's Name, for Piazzi XI. 161.
{li}
1959.
Seconds of
Mean N.P.D.
151, read Piazzi XI.
1880-0, for io"-88, read
2 7S3- JfStar's 4^
Name,/or B.D. +50
an ,i
(
al ,(j
(2
2 ,,d Star),
nd
No. 2412 (ist Star) read Piazzi XVII. 147 (ist Star)
Star) respectively.
ERRATA. Greenwich Ten-Year Catalogue of Stars for 1880 PAGE.
contd.
NO.
{ixxii}
2787.
73
Greenwich Ten-Year Catalogue of Stars for 1880 PAGE.
Star's
Name, for
Oeltz.
Arg.
(N.)
read
17419,
NO.
{xevi}
3744-
Lalaude 32488. Seconds of Mean N. P.O., i88o'o,/or ^"'17, read
{ixxii}
2790.
Secular Variation in N.P.D., for
{ixxvii}
2990.
Star's
{ixxviii}
3035.
read
74,
3745-
Piazzi
174.
Seconds of Mean N.P.D. i88o'o,/or 39"'8i, read
{c}
3915.
3118.
Seconds of Mean N.P.D. i88o'o, for 3"'6o, read
3119.
{ixxxi}
3130.
58'.
57'.
and
59"'93, read
o"-i4.
3979.
Seconds of Mean N.P.D. 1880 'o, for i4"'36, read
{ciii}
4036.
Seconds of Mean 8- 94 2.
4"'33-
Seconds of Mean N.P.D. i88o'o, for i9
Mean N.P.D. i88o'o,/or 16.
;
{cu}
3" '54-
{ixxx}
Dele the observations. Dele note to 3742, 3744, and 3745 Footnote. for note 3744, 3745, read 3742 and 3744.
16.
39"-24.
{ixxx}
;
of Obs. in N.P.D., for 8, read id.
{xevi}
XVIII.
Piazzi
;
Mean N.P.D. i88o'o,/OT- 28""49, read 28"'39 Mean Date 1800+, for 8 2 '09. read 83-90; No.
o"'o52, read
+0"'052.
XVIII.
1880-0, for 53 s 'i39, 'read ii7 ; MeauDatei8oo+,/or8i'52, read 8 3 -90 No. of Obs. in R.A., for 6, read 15 ; Seconds 8-
of
53"-26.
Name, for
Seconds of Mean R.A. 53
2788.
{ixxii}
contd.
I<J"-$Q,
read
"78.
Annual Precession
in N.P.D., for
R.A. i88o'o, for
8 8 '933,
read
6"'i99, read
6" 'z 1 2. {ixxxii}
3188.
5"-2 9
{ixxxii}
3195.
Greenwich Five-Year Catalogue 0/258 Fundamental Stars for 1890.
Seconds of Mean N.P.D. i88o'o, for $"'09, read .
Seconds of Mean N.P.D. i88o'o,/or 24"- 9 3, read
{viii}
75.
2 4 "73.
{ixxxiii}
3208.
Star's
Name, for
9 Canis Minoris...o, read 9 Canis
Majoris.,.0.
Seconds of Mean N.P.D.
1
8 80 -o,
3 8" -68,
for
read
{ix}
85
&
86.
Dele Footnote.
37"'533364.
Seconds of Mean N.P.D. 1880-0, for z"ji, read 2"'68 ; Secular Variation in N.P.D., for o"'238, read +o"'i38.
{ixxxviii} 3411.
Seconds of Mean E.A. i88o'o, for 49 s5o8, read Seconds of Mean N.P.D. 1880-0, for 498-698 read 39"'92, $Z"'\T.
{ixxxvii}
Greenwich Second Ten-Year Catalogue of Stars for 1890. For Micro metrics Magnitude. Micrometricas Mensurae.
lii}
;
{ixxxviii} 3439.
Secular Variation in N.P.D.. for
{xiv} o"'o88
589.
read
Annual Proper Motion read
3510.
Seconds of Mean N.P.D. i88o'o, for 37" -04, read 2" 4 0.
{xv}
616.
{xc}
3517.
Seconds of Mean N.P.D. 1880-0, for I3"'i9, read
{xxii}
968.
{xxiii}
1014.
{xxiii}
1050.
i3"'57-
{xci}
3525.
Seconds of Mean N.P.D. "-
3I
{xci}
1
88o'o, for 31 "-91, read
9 6.
Annual Proper Motion read
-
3556.
Seconds of Mean N.P.D. i88o'o, for o"-26, read o"'47 No. of Obs. above Pole, for 7 read 6.
|1'}
3563.
Seconds of Mean N.P.D. i88o'o,/or 2i"'42, read
{ixvii}
Star's
+os 'oo23. Name, for
{xcii}
{xnv}
3718.
Seconds of Mean R.A. 43
S>
u
8
i88o'o, for 43 '353,
735-
GREENWICH SECOND TEN-YKAB CATALOGUE FOR
1890.
read
in
R.A., for
+o
Eridani...T 3 , read
s
'ooi4,
n
Eri-
Footnote.
For Nos. 2403-2404, read 2402-2403.
Seconds of Mean R.A. 1890-0, for 3i"-i66, read 3i"'>55-
2l"'40.
+o"'oo5,
Mean N.P.D. 1890-0, for 25. 45'., read 24. 45'. Seconds of Mean N.P.D. 1890-0, for 37"'O9, read 37" -26.
;
3204.
in N.P.D., for
005
+o"-o88. {xc}
read
Measurse,
{ixxx}
For No. 5882, read 3881.
{ciii}
For No. 3046, read 5046.
SUPPLEMENTARY LIST OF
ERRATA THE GREENWICH CATALOGUES FROM
IN
Greenwich Seven-Year Catalogue of Stars for 1860
Greenwich Six-Year Catalogue of Stars for 1840. no.
PAGE. 69
1328.
69
1330.
Mean R.A. 2z h
1840 Jan. 2^. ( 4 8 ).
.
Mean Year
R A.,
for R.A.,
Annual
insert
2.
.
1840 Jan.
i,
h for 22
Precession in R.A. insert
.
(io
8
read
),
2.,
+2
8
read 22 h 2 m .
1332.
page 66 Seconds of Mean K.A. 1840 Jan. i,for 2o s 'o3, read
dele the observations
Annual Precession in R.A.,/or -\-i 'i2.6, Mean N.P.D. 1840 Jan. i, for
;
8 -j-2 'io6
49',
1980.
Greenwich Seven- Year Catalogue of Stars for 1864. {xcvi}
1694.
{cxxii}
2231.
for S3
S
'37,
read
Mean N.P.D. 1860
Jan. i,for
105, read 101.
The above additional Errata have been kindly communicated by Prof. Auwers since the Second Ten- Year Catalogue was printed.
For Erratum on page 67 rearf Mean R.A. 1840 Jan. i, for 22 h 2. I5"'i7, read 22 h 2 m (4 s ) dele Mean Year for R.A., No. of Obs. in K.A., Mean R.A. 1845 Jan. i, Mean Year for R.A., No. of Obs. in R.A. .
.
;
Seconds of Mean R.A. 1840 Jan. i,for 2o s- 03 read 2o s 'o5 Annual Precession in R.A. for +2 S 'O99 Mean N.P.D. 1840 Jan i, for read -|-2 s 'io6 34. o', read 34. 12'.
Greenwich Twelve- Year Catalogue of Stars for 1845, and Greenwich Six- Year Catalogue of Stars for 1840. Note.
A
;
1982.
i,
8
5i '37-
;
{elxviii}
Seconds of Mean R.A. 1864 Jan.
12'.
.
{clxviii}
of these stars.
;
read 34.
Greenwich Twelve- Year Catalogue of Stars for 1845. 1979.
Seconds of Mean N.P.D. 1860 Jan. i, for 21" '84, read 31" '84. No correction for proper motion has been applied in fonning the Mean R.A., or the Mean N.P.D.
s
208-05
{clxviii}
9751885. 1971.
contd.
'i27.
For Erratum on page 66 read and numbers.
34.
NO. '943-
.
1331.
read
PAGE. {cxiif
No. of Obs. in
1840;
insert 2.
Mean K.A.
69
h for 22
i,
1840.
For Erratum on page 67 read Insert Mean R.A. 1840 Jan. i, 2 m . I5 8 'i7 Mean Year for R.A. 1840 No. of Obs. z. Mean R.A. 1845 Jan. i, 22 h 2 m 25 s- 5i Mean Year for R.A. 1845 No. of Obs. 3.
n\
table of the corrections required to R.A. and N.P.D. of certain stars on account of proper motion for the fraction of the year which had not been applied in the original computations for these Catalogues is given at the end of the These Greenvrich Seven- Year Catalogue of Stars for 1860. corrections have not been included in the list of Errata
printed in the present Catalogue.
;
;
.
.
;
!
Greenwich Second Ten-Year Catalogue of Stars for 1890. Greenwich Six- Year Catalogue of Stars for 1850. (xxxv)
108.
(xlviii)
375.
No. in Bradley, dele, 151. Seconds of Mean R.A. 1850 Jan. i,for
8
'54,
read
in
Groombridge, insert 155.
280.
{xiii}
511.
,,
,,
insert 303.
1531.
,,
,,
insert 910.
{xxxiii} 5
No.
{viii}
{xxxviii} 1751.
Annual Proper Motion in R.A., for
+o
3i
oo5, read
o'ooio. (Ixxviii)
907.
Seconds of Mean R.A. 1850 Jan. i,for i4 8 '6o read 8
i4 '58.
Annual Precession
+
I
8
in
R.A.,
Jan. i.for
999.
26.
7',
'428,
read
read 26.
50" -27. Year, insert 1850-4 No. of Obs., insert Dele observation and numbers.
Mean (Ixxxiv)
+i
;
Variation of Precession -|-o"'376, read o"'^6.
Secular
for XVI.
(Ixxxix)
1056.
No. in
(cviii)
1418.
Seconds of Mean N.P.D. read 2."'i$.
Piazzi,
io,
Precession in N.P.D., for
in
o'.
933.
Seconds of
Mean R.A.
read XVI. 103. 1850 Jan. i, for z"'4i, 16"'99, read
i6"'9o.
1860 Jan. i,for 53^03, read
8
Seconds of Mean R.A. 1860 Jan. 8 4 -i S
i,
for
S
3 '56
read
2198.
{xlvi}
2200.
insert 1294.
1848.
Secular Variation in R.A., read
{xlvii}
2203.
{liv}
2560.
insert 1474.
{ixxxii}
3954.
insert 2268.
{xc}
4384.
insert 2448.
txc}
4398.
insert 2455.
{xci}
4432.
insert 2479.
{xciv}
4580.
insert 2581.
{xciv}
4594.
dele
{xcviii}
4774.
insert 2717.
{cif
4908.
insert 2821.
{cxxx}
6356.
6572. {cxxxii {cxxxiv}
2577.
insert 3841.
Annual Proper Motion
in N.P.D., for -|-o"'oi9o,
read -|-o"'i9O.
+o s 'oo86.
GREENWICH SECOND TEN-YEAR CATALOGUE FOR
insert 1292.
insert 1278.
.
{cvii}
insert 1184.
{xlvi}
N.P.D., for
52 '92.
{lxxxviii}i46i.
No. in Groombridge,
{xliii}
2016.
i.
Greenwich Seven-Year Catalogue of Stars for 1860. {ixii}
Footnote, for Nos. 2005, 2007, read 2005, 2006.
{xliii}
'42I.
Mean N.P.D. 1850
908.
for
s
1890.
{cxxxvi} 6666.
No. in Groombridge, insert 4071.
GREENWICH
SECOND TEN-YEAR CATALOGUE OF STARS FOR
1890, FROM OBSERVATIONS MADE AT THE
ROYAL OBSERVATORY, GREENWICH, 1887 to 1896.
GREENWICH SECOND TEN- YEAR CATALOGUE FOR
1890.
NOTE. STAB'S NAME. The "
Name "
Star's
adopted
in
this
Catalogue
is
taken
from one of the following authorities,
the order of preference being the order of mention of the authority below 1.
Flamsteed's
No.
constellation
and
with
constellation,
:
Bayer's
taken
letter,
from
Baily's
from the British Association Catalogue. FunJainanta Aittmnom-la: deduced from Bradley's observations, referred
edition of Flamsteed, or 2.
The No. as
3. 4.
in Bessel's
"Bradley."
The Hour and No. in Piazzi's Catalogue, The No. in Groombridge's Catalogue.
edition 1814.
6.
The No. in Baily's edition of Flamsteed's Catalogue, referred to as " B. F." The Hour and No. in Weisse's two Catalogues of the stars in Bessel's Zones, " " W. B." and " W. B. (2) respectively.
7.
The No.
5.
to
Lalande's Catalogue,
in
by the
published
Fedorenko with supplement referred
to
as
Britisli
"Lalande,"
Association, " Lalande F."
or
referred
that
in
to as
edited
and " Lalande
F.
by
(2)"
respectively. 8.
The No.
9.
The No. "
(N.) 10.
The No.
in Lacaille's Catalogue of Southern
two Catalogues
in Oeltzen's
or
Stars,
of Argelander's
published by the British Association. Zone Observations, referred to as "Oeltz. Arg.
" Oeltz. Arg. (S.)."
in the First or
Second Radcliffe Catalogues, referred
to as
"
Radcliffe
"
and "Kadcliffe
"
(1860) 11.
12.
respectively.
The No.. in Carrington's Eed Hill Catalogue. The Zone and No. in Argelander's Bonn " Durchmusterung " "
13.
or Schbnfeld's continuation of
the
"
Durchmusterung (Bonn Catalogue, Sections I., II., III., and IV.; Bonn Observations, Vols. " B. D." III., IV., V, and VIII.) referred to as The No. in the British Association Catalogue, referred to as " B. A. C." in the Cape " in the Harvard to as H. referred in the Greenwich Catalogue (1880); P."; Photometry, ;
Catalogues; or in the Catalogues of the Astronomische Gesellschaft (1875).
MAGNITUDE. The magnitudes
from the following sources in the order given. The Harvard PhotoCatalogues of the Astronomische Gesellschaft or the Bonn Durchmusterung Struve's Micrometricae Measures for double stars (marked t) ; the Uranometria Argentina,
metry (marked *) (unmarked) ; Southern
;
are taken
the
the
Meridian Photometry (Harvard), or the Argentine General Catalogue for 1875 for Southern Stars (marked t), the Authority in each case being stated in the Notes. In the case of variable stars, the limits of magnitude and the period given in the Notes are taken from Mr. Chandler's Catalogue in the Astronomical, Journal, No. 379.
PROPER MOTIONS. Auwers' " Neue Eeduction der Bradleyschen Beobachtungen," or his "Catalog der Fundamental Sterne"; from the Catalogues of Professor Porter; or from the list given in the Introduction. Other Authorities used are mentioned in the Introduction.
The proper motions
are generally taken from Professor
SECOND TEN-YEAR CATALOGUE OF STARS FOR FROM OBSERVATIONS AT THE ROYAL OBSERVATORY, GREENWICH, 1887 TO
"1
a & No.
a
|
'755
18900,
1896.
SECOND TEN-YEAR CATALOGUE OF STARS FOR 1890-0,
(IV)
HIJ 3
SP
i
'
No.
=1
No. of
No. of
Obs. ;
Mean
4
Star's
Name.
II.
A.
Mean
Preces-
Secular Varia-
sion.
tion.
.3
Date.
a
U
Annual
Obs.
Annual
1800
+
1890-0.
o
N.l'.D.,
Animal
Mean
Proper Motion.
1890-0.
|
Mean
Date.
Preces-
Secular Varia-
sioo,
tion,
Annual Proper Motion.
I
1890-0.
1890-0.
1800 -f
Js
1890-0.
1755h
17-6
O.
7-
34-177
93-03
4
W'*|
O.
7.
34-244
93-69
70
B. (2)0. 152-3.. 6-3*|
o.
89-13
3
90-39
3
89-86
3
(Iroombridse 19
5'
52
88 Pegasi
53
W.
23 Androinedte
54
5-8* 6~o*
Lacaille 7
55
+ 3-I235 + 3-0840 + 3-0948 + JII + 3-0488 + 3-1805
|
7.
42-501
!
-
o.
7-
47 983
o.
8.
7-349
i
]
56
21
Groombridge 21
...8-0
o.
8.
20-571
95-61
3
57
22
Groombridge22... ..,7-6
o.
8.
25-806
3
3
6-7
o.
8.
48-666
93-20 88-12
3
...
...S-i
o.
8.
49-047
95-61
3
58
24
Piazzi 0. 13..
59
23
60
25
Groombridge 23 Groombridge 25
61
26
.
.
.
.
...8-0
o.
8.
'
53-768
3
3'
3
...
3
+
3-1809
+ 3-1164
!
+ 3-1366
Groombridge 26 B. F. 3310
8-5
o.
9.
5-692
94-11
3
62
54'
o.
9.
17-582
88-57
3
63
Piazzi 0. 19
5-9* o o
o.
9.
28-310
90-53
3
o.
9.
32-010
91-70
3
7-9
o.
9-
45-957
92-44
3
+ 3-0628 + 3-1002 + 3-1254 + 3-139
6-2*
o.
9-
59-994
9573
3
+
9'5 6-1*
o. 10.
9-781
93-74
3
10.
6
64 65
27 28
Groombridge 27 Groombridge 28
66
20
Bradley 6... B. D. +29' No.
67 68
30..
36 Piscinm
o.
Piazzi 0. 25
5-8*
o. ii.
54-875 2-661
96-71
69 70
Groombridge 32
7'5
o. ii.
4-368
88-76
7'
B. D.
No. 6. ..8-8
o. ii.
72
Groombridge 35 B. D. +36 No.
37
Groombridge 37
73
74
76
36
77
38
78 79 80
25 A in n >n> l
Groombridge 42 8 Ceti
44
Groombridge Groombridge Groombridge Groombridge Groombridge
45
87 88
47
46 49 So
89
9'
46 49 50
Groombridge 5 1
5'
27
'7
52
Groombridge 52
96
S3
97
54
98 99
55
Groombridf^ 53 Groombridge 54 Groombridge 55
100
93-41
5
8-7
o. ii.
56-718
89-14
3
7-0 6-8
O.
12.
5-656
93-34
3
2
O. 12.
8-671
92-76
12
-
12.
9-676
95-48
12.
I3'l62
90-90
4 4
O. 12.
21-699
95-64
3
12.
34-847
94-20
5
o. 13.
16707
94-37
4
....8-5
o.
13.
42-742
92-50
4
...'3-6*
o. 13.
49-345
91-14
24
,...6-2
o.
54-629
87-95
3
.
4 -6*
.
.
.
o.
14.
14-638
92-06
14.
15-175
9376
7-9
o.
14.
18-772
94-79
3
o-
H- 39-137
93-85
3
.
.
.
.
.
39-842
94-57
3
...7-4 ...8-0
o.
14.
40-918
94-79
3
o.
14.
43-177
91-27
4
...8-8
o. 14.
47-383
96-88
3
.ds-6*
o.
14.
56-132
96-58
i
...8-5
o.
15.
12-063
91-27
4
o. 15.
19-586
92-27
6
o. 15.
20-968
7-3
o- 15-
39-437
7'3 7'4
o. 16.
P5'3* -J8-4
.
.
3
20-042 +0-024
63. 37. 24-64
89-13
3
20-042 +0-024
'979
90-39
3
20-041 +<ro24
116. 37. 56-91
89-86
3
20-040 +0-024
95-58
3
2
93'58 88-12
3
j
3
20-038!
95-59
3
20-038!
94-83
3
5^54 94-26
3
2 ,
+ 3-350I + 3-I326 + 3-2032 + 3-126I + 3-3I52 + 3-I472 + 3-059 1
49- 34-
+0-0732' +0-0727
24. 16.
+0-0285 +0-0676
49- 34- 47-39
1+0-0408
38- 59- 40-11
9-68
I
24. 24. 24-96
26.
2.
24. 29.
43-24
i
|
i
20-0361
63- '9- 39-80
90-60
4
20-036 +0-027
+0-0318
46. 24. 3O-2O
91-70
3
20-03(1
40
33- 39-87
92-44
3
20-035'
13. 39.
38-02
92-97
it
20-034 +0-030
59- 49-
4i'23
9373
2
20-033 +0-029
82. 22. 14-83
96-72
7
20-030'
41-38
93-64
7
43- 59- 46-93
20-030 +0-031 20-030 +0-031
003^
4.
29.
+0-I372 +0-04I2 +0-0257 +0-1097
96-41
3
2
20-029!
39. 10. 41-17
93H2
5
2
2O-O26 +0-032
4-
15-12
89-14
3
17. 39.
50-09
S3-"
88. 55. 22-56
9276
14. 20.
2
20-024'
53- 49- 28-74
90-63
7
..
20-023
+o"34
+0-II2I
17. 29.
16-17
94-66
4
3
20-020!
+0-036
+0-03I9 '
O OO22
O 003
'
0-002!
+ 3-I5I2 + + .3-!559 +0-0334 + 3-1687 +0-0383 + 3 45 +0-0292 + 3-I527 +0-0320 +5-5317 +0-0067 o-ooi; 3-I554 +0-0321 3 'HO? +0-02651+0-0038 3-1599 +0-0335
+ 3-0841
3
92-50
4
...
2-08
90-28
19
...
49- 52. 5I-53
87-95
3
...
41. 44. 41-24
91-57
...
74- 21. 33-53
87-80
..
...
99. 26.
... ...
20-012 +0-038
49. 41. 17-06
94-79
...
20-012;
46. 54. 57-14
91-27
...
20-012 +0-038
92-76
4
2O-OII +0-078 20-011 +0-038
..
20-009 +0-039 20 -008, +0-039
52-26
49 63
91-27
52. 38. 27-17
92-27
46. 53.
39. 24. 55-84
9677
a close double and forms the binary 02 a close double and forms the pair 2 13. limits of magnitude are 7-0-8-0 and iro-12'o
99.
The
6.
19.
34- 49-
2.
is
:
the period 445 d
.
+0-038
20-008 +0-039
45. 40. 23-59
95-66
is
.
3-44 8'6o
2
+0-003
20-014 +0-037 20-012 +0-038
94-57
9.
+0-032
+0-037
41. 38. 30-99
i.
!
20-014 +0-037
94-79
2-36
This star This star
20-0141
93^5
82. 25. 14-16
+'47
20-017 +0-036 20-017 +0-035 20-016 +0-036
3-54
94-69
53. 66.
+0-034
45. 40. 16-67
35- 57- 53'32
3
20-025
20-025 +0-033
46. 55. 56-52
46. 41.
-I
3 '05
+0-0475 3-2173 +0-0497 3-1958 +0-0420
96-77
+'35
+0-02520-005
3-2080
22-767
2
3
4
4
17.
+"34
90-90
28- 53-
+0-009
20-025 +0-032
95-24
94-70
o.
+0-032
20-025
3-85
52-215
281 8-4
12
20-026!
49. 51. 50-24
o. 16.
Oeltz.
2
+0-016
+0-032
+0-1403 +0-0287 +0-0612
92-95
3
...
3
I
+0-030
3
0-005
95-66
+0-028 +0-028
88-76
28. 55.
17-100
+0-027
14 27- 55 '34
3-23/8 1+0-0625+0-0195 3-3419 '+0-1038'
17.
20-037 +0-027
+0-0177
4
o.
3
3
3
...T var.
+0-026 +0-027 20-038 +0-026
88-57
1443+0-005?
+0-131
1
100. 10. 52-52
+0-0388
+0-013
2O-Q4O +O-O26 20-040 +0-026
0-0029
+0-0289 3^656 +0-0381 3-0958 +0-01 12
+
'
95-03
Cassiopeise
Arg. (K.
20-042 +0-024
60
+3-0738 +0-0032,
3
o. 14.
4
93 l6
3-3124
+ + + + 3-3275 + 3-I575 + 3-1249 + 3-2941
5 |
...7-1
.
.
13.
o.
...fo .
O.
7-3
.
Andromeda
95
53-204
O.
Radcliffe56 41 Piscium
16
93
45 47
3
ii.
O.
40 Piscium
'5
86
94
Groombridge 43 Groombridge 44
96-41
o.
....7-6
..o-
42
17-095
7-1
....7-4
93 -3
75. 25. 40-99
+O-02O2 3-0810 +0-0065 3-1884 +0-06O2 3T393 +0-0347
3
.
40. 53. 17-42
+0-010110-0007 +0-0173 +0-028410-0124
+3^890 +0-0729
7
.
i
Groombridge 41
43
84
i'< I:
4'
4
83
92
Groombridge 36 Groombridge 38 Groombridge 39
39
Si
85
25..
Piazzi 0. 33
75
82
+75
35
+0-0371
,
I
O'Oig
i
20-006 +0-041 20-004 +0-043
+0-043 -19-996 +0-044 -19-9951 +0-044
+0-024
!
+0-036 ... ... ;
I
i
FROM OBSERVATIONS AT THE ROYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
a o
3 a
6
IOI 1
02
103
104 105
106 107 1
08
109
no in 112
H3 114
"5 116 "'7 118
119 120
;
121
122 '23
124 125
126 127
128
129
'3'
132 133 '34 '35
136 137
'38 '39 140 141
142 143
44 145
146 '47
148
149 15,.
:
_J>
|
Ja .3*2
d
fc
&
1755-
1810.
Mean R.A.. Star's
Name.
Mean Date.
1890-0. 1800
+
{vi}
No.
SKCDND TK.N-\'EAU CATALOCJUK OF STARS FOR
FROM OBSERVATIONS AT THE ROYAL OBSERVATORY, GREENWICH, 1887 TO 1890. 1
c
"2 .
No
41 II -
-a| 6
.*
o
fc
*
1755.
1810.
{vii}
SECOND TKN-YEAR CATALOGUE OF STARS FOR
{viii}
1890-0.
No. of Hi/an K.A.,
No.
Star's
.si
Date.
f 1755.
1800
No.
Annual
Mean
Preces-
Date.
sion,
Secular Varia|
Annual Proper Motion.
tion,
1890-0.
1890-0.
1800
1890-0.
+
18900.
a>
o. 42.
9-487
90-07
4
-8
o. 42.
16-343
88-85
4
o. 42.
26-799
96-42
3
1^4 -o'
o. 42.
26-990
Oroombridge 149. ...7-6
o. 42.
26-987
90-51
\V. B. 0. 704.,
o. 42.
28-303
o. 42.
34-068
8972 8975
.6-0' 62 Piscium B. D. +37 No. 141 9-4
o. 42.
34-939
94-01
5
o. 42.
35 '249
93-82
3
25 Cassiopeise
o. 42.
36-047
92-05
3
7
+42* No.
124.. 1
74
[8
24 Cassiopseie (Oomes)nJ 6
146 149
256
24 Cassiopeiae
W.
257
259 260
Proper Motion.
i
Mean N.P.D.,
i
9-2
t>.
B. D.
253
258
tion,
Obs.
Annual
1810.
B.
255
sion,
1890-0.
+
^
252
79
Preces-
Secular Varia-
1890-0.
251
254
Annual
Mean
Name.
No. of
:
Obs.
84 83
B.
0.
8'5 8-2
707.
+ 3-0392 + 3-3018 + 3-4550 + 3-4550 + 3-3I34 + 3-1099 + 3-1145 + 3-1015 + 3-2600 + 3-3708
26 3
i
4 3
-4-0-0003
97. 45.
1971
+0-0357 +0-0611 +0-1351
46. 55.
0-40
32. 46.
+0-0611+'0-1351
32. 46.
90-07
4
88-85
4
19-713 +0-097
9-00
96-42
3
-19-710 +0-IOI
4 -02
94 "06
26
-19-710 +o'ioi
+0-0374
45- 37- 39-70
90-51
-19-710 +0-098
+0-0088 +0-0094
81. 22. 43-61
8972 8975
-19-710 +0-092
80. 20. 29-11
1+0-0078 +0-0050
83. 18.
3-42
94-02
5
-19-708 +0-092
+0-0292 1+0-0465+0-0022
52. 47- 57-95
93-82
3
-19-708 +0-096
39- 37- 54-o6
9i'oi
3
-19-708 +0-099
6-62
,
,
-19-715 +0-0901 i
+0-516 +0-516
-19-708 +0-092 0-004
'
+0-015
I
Piazzi 0. 189
261
262
'45
263
36-749
94-44
9
o. 42.
38-842
93-71
3
o. 42.
43-443
94-51
I
+ 3-7463 + 3-2558 + 37778 + 3-1030 + 4-I835 + 3-7642 + 3'3OI 9
3
|
'47
264 265
S'7*
Groombridge 145. ...7-6 B. D. +36 No. 128 9-4
o. 42.
Groombridge 147 ....7-3 63 Pisciuin
85
84-6'
266
'43
Groombridge 143
....
267 268
148
Groom bridge 148
....
269
'5'
52-552
93-88
o. 42.
58-465
92-37
54
j
3
6 7
o. 42.
58-918
92-99
2
6-7
o. 43.
0-290
3
No. 181 9-1
o. 43.
19-556
95-48 88 -8 1
Groombridge 151 ....6-9
o- 43-
27-390
93-02
5
Lalande 1323
o. 43.
31-726
94-47
3
B. D.
270
o. 42.
+42
7-7
3 i
(
271
87
152
35 Andromedse..
K
.
Lalande 1348
272
.
4-4* 6-1*
+ +
1+0-0067 +0-0500
85. 17.
94'44
9
-19-707 +0-092. +1-15
+0-1191+0-074
20.
24-30
93-48
2
-19-707 +o'iio
+0-0285 +0-1253 +0-0079+0-0035
53- 29- 55-26
94-5I
3
-19-706 +0-097
4
-I9'703
93-21
36
-19-702 +0-093
91-60
2
-19-702 +0'I22
70 95 -42
3
-19-701 +0-III
88-81
3
-19-696 +0-099
93 -02
5
-19-694 +Q-IOI -19-692 +0-099
+0-2292 +O-I22O +0-0350 3-3442 +0-0414 3-2669 +0-0297
o. 43.
44-854
94-66
13
+3-2890
o. 43.
48-673
95-61
3
+ 2-9555
+o
9.
19. 25.
27-17
o.
49-89
83.
12. 38.
44-38
19. 49. 31
j
I
;
0-23
+o-iu +0-037
'
47. 36. 20-55 42. 50.
7-23 J
52. 23.
o 0009
0328
vooSi
3
43-56
49. 31. 13-24
94-66
13
6-46
95-61
3
114. 44.
-19-689 +0-100 19-688 +0-091
...
+Q-OIO
j
Piazzi 0. 196
5-9* 8-2 8-6
o. 44.
9-665
91-22
3
o- 44-
"3'594
9571
2
o. 44.
27-507
89-81
4
Bradley 74
5-5*
o. 44.
37-081
95-02
2
Piazzi 0. 199
6-2
278
Lalande 1367
279 280
W.
Piazzi 0. 203...
7'5 8-5 6-8
281
Bradley 91
6-6
o. 45.
282
Piazzi 0.
o. 45.
....
7-0 8-2
o. 45.
....
8-6
o. 46.
8-5
273
'S3
Carrington 104 W. B. 0. 734
274 275 276
74
277
'54
283
156
284
157
0.
743
208
Groombridge 156 Groombridge 157 Lalande 1432
285
286 287 288
B.
90
158 160
290 291
162
292 294
90-00
38-427
94-09
7
+ 3-0854
49-284
89-92
7
+ 3-1298
52-210
94-25
2
14-078
93-84
3
o. 46.
23-416
89-72
5
+ + +
28-505
9I-57
4
46. 30-352
94H7
7
89-76
3
o.
45. 17-356
o-oooo
+0-0059 +0-0110 3-4616 +0-0580 3'3423 +0-0390 3-1199 +0-0098
44-222
93-18
3
o. 46.
44-427
93^7
4
B. D.
o. 46.
46-732
93-82
3
3-2865
o. 46.
47-968
88-37
4
3-2972 +0-0322
B. (2)0. 1160.. 7-8
o. 46.
55-177
94-52
3
3-2882
B.
8-4
o. 47.
3-888
89-84
4
+0-0309 +0-006 ... +0-0094
7'9
o.
47.
3-992
3
+0-0450.
o. 47.
14-139
o. 47.
19-519
5-0* 6-8
o. 47.
23-141
o. 47.
26-842
8-6
o. 47.
26-970
+38 No. 128 9-1 Groombridge 162 ... 6-5 0.
789 ...
20 Ceti
66
5
6
o. 46.
Groombridge 161 .... 7-0 Groombridge 164.... 7'7
1
89-87
49-835
Groombridge 160... 8-5 Lalande 1433 8-4
781
161
300
o. 44.
o. 46.
0.
164
165
4
+0-5840+0-0284 +0-0478+0-013 +0-0401 3-II74 +0-0096 +0-0480
7'3
B.
297
299
9279
+ 5-2127
+ 3-3375 + 3-5491 + 3-1352 + 3-3823 + 3-3578
296 93
44. 49'034
Piazzi 0. 211
Groombridge 166
....
43-145
91-42 93-00 94-42
2
41
3
+0-0381 +0-0721
0-0104
1+0-0115 +0-0446.
+0-0409 +0-0307
o-oiog
:
+0-0953!
3-3762
+0-0432J
3-0642
+0-0036 +0-0505 +0-0392
253-254. These stars form the pair
S
95-82
3 2
78. 46.
5-12
89-81
4
6. 53.
24-06
92-08
3
89-12
4
39-
5-
27-96
43- 52. 39-78 80. ii. 15-81 I-
91-22
92-79 89-87
60.
...
...
4
19-682 +0-101 19-681 +0-174
!
19-677 +0-096 1
4
-19-675 +0-155
+0'02O
I
-19-673 +0-104
0'02
4
-19-671 +0-103
5
6
I
19-670 +0-097 1-19-663 +0-106
37-59
90-05
87. 12. 43-94
93-95
6-i
19-657 +0-IOI
77. 48. 48-65
89-92
?
34. 20.
2-56
94-48
19-654 +0-099 19-653 +0-109
44- 47- 34-44
94-78
2
79. 59- 47'8i
89-72
5
45- 27. 51-55 29. 28. 45-48
91-57
76. 56. 56-60
89-76
41.
39-
2
3
-
-19-643 +O'IOO
-19-642 +0-107 -19-642 +0-113
-0-13
14-23
93-18
3
43. 29. 58-74
93-37
4
+Q-IOI -19-638 +0-108 -19-638 +0-108
51. 41. 57-29
93-82
3
-19-637 +0-106
50. 21. 14-84
88-37
4
-19-636 +0-106
-0-049
3
-19-634 +0-106
0-17
4
-16-632 +O'IOI
3
-19-632 +0-109
9.
51-33- 33-56 80. 47. 34-91
89-84
40. 56. 31-41
3
-19-
...
24-
9-
44-37
91-89
2
-19-629 +0-118
...
42.
4.
41 -87
94-81
3
-19-627 +0-109
91. 44. 30-69
92-33
39
37. 54. 27-89
93-83
3
44. 46. 45-46
94-42
3
O'OO22
+0-058
-19-646 +0-106
!
93-93
1
+ 3-6824 + 3-3495
20-64
5.
o.
Groombridge 163
298
5
8.
45- 35- 5I-35
7-6
159....
163
295
90-69
+0-0376 +0-9330 +3-1237 +0-0103
+ 5-9238
4-9*
Groombridge Bradley 90
W. W.
293
o.
39751
44-
...
i
o. 46.
W.
289
-
3
-19-626 +O-IOQ
3
- 19-625
+Q-III
19-625 +0-109
+O-OO9
FROM OBSERVATIONS AT THE KOYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
No.
{ix}
SECOND TEN- YEAR CATALOGUE OF STARS
No.
FOI;
1890-0,
FROM OBSERVATIONS AT THE ROYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
No.
{xi}
{xii}
No.
SECOND TEN- YEAR CATALOGUE OF STARS FOR 1890-0,
FROM OBSERVATIONS AT THE EOYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
No.
{xiii}
{xiv}
N*o.
SECOND TEN-YEAR CATALOGUE OF STARR FOR 1890-0,
FROM OBSERVATIONS AT THE IVOYAL OBSERVATOEY, GREENWICH, 1887 TO 1896.
No.
{xvi}
No.
SECOND TEN-YEAR CATALOGUE OF STARS FOR 1890-0,
FKOM UBSERTATIONS AT THE liOYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
No.
{xvii}
{xviii}
So.
SECOND TKN-YEAK CATALOGUE OF STARS FOR 1890-0,
FROM OBSERVATIONS AT THE EOYAL OBSERVATORY, OUKENWICII, 1887 TO 1896.
No.
{xix}
{XX}
No.
SECOND TEN-YEAR CATALOGUE OF STARS FOR 1890-0,
FROM OBSERVATIONS AT THE EOYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
No.
{xxi}
fxxii}
No.
SECOND TEN-YEAR CATALOGUE OF STARS FOR 1890-0,
FROM OBSERVATIONS AT
No.
TIIE
EOYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
(xxiii)
{xxiv}
j
No.
SECOND TEN-YEAR CATALOGUE OF STARS FOR 1890-0,
FKOM OBSERVATIONS AT THE EOYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
No.
{xxv}
{xxvi}
No.
SECOND TEN- YEAR CATALOGUE OF STARS FOU 1S90-0,
FROM OBSERVATIONS AT THE EOYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
No.
{xxvii}
{xxviii}
No.
SECOND TEN-YEAR CATALOGUE OF STARS FOR 1890-0,
FROM OBSERVATIONS AT THE EOYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
No.
{XXX}
No.
SECOND TEN-YEAR CATALOGUE OF STAKS FOR
1890-0,
FROM OBSERVATIONS AT THE EOYAL OBSERVATORY, GKEENWICH, 1887 TO 1896.
No.
{xxxi}
{xxxii}
No.
SECOND TEN-YEAR CATALOGUE OF STARS FOR 1890-0,
FKOM OBSERVATIONS AT THE EOYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
No.
{xxxiii}
{xxxiv} 1
No.
SECOND TEN-YEAR CATALOGUE OF STARS FOR 1890-0,
FROM OBSERVATIONS AT THE EOYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
No.
{xxxv}
{xxxvi}
No.
SECOND TKX-YEAK CATALOGUE OF STARS FOR 1890-0,
FROM OBSERVATIONS AT THE ROYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
No.
{xxxvii'}
{xxxviii}
No.
-COfO
SECOND TEN-YEAR CATALOGUE OF STARS KOR 1890-0,
FROM OBSERVATIONS AT THE EOYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
No.
{xxxix}
SECOND TEN-YEAU CATALOGUE OF STARS FOR 1890-0,
No.
FROM OBSERVATIONS AT THE EOYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
No.
{xli}
{xlii}
No.
SECOND TEN-YEAR CATALOGUE OF STARS FOU 1890-0.
FROM OBSERVATIONS AT THE EOYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
No.
{xliii}
{xliv}
No.
SECOND TEN-YEAR CATALOGUE OF STARS FOR 1893'0,
FROM OBSERVATIONS AT THE EOYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
No.
{xlv}
{xlvij-
No.
SECOND TSN-YEAU CATALOGUE OF STABS FOR 1890-0,
FROM OBSERVATIONS AT THE ROYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
Mo.
{xlvii}
(xlviii}
Xo.
SECOND TEX-YEAR CATALOGUE ov STARS FOR 1890-0,
FROM OBSERVATIONS AT THE EOYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
No.
{xlix}
{1}
No.
SECOND TEN- YEAR CATALOGUE OF STARS FOE
1890-0,
FROM OBSERVATIONS AT THE ROYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
No.
{11}
{lii}
No.
SECOND TEN- YEAR CATALOGUE OF STARS FOR 1S90-0,
FROM OBSERVATIONS AT THE ROYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
No. of Obs.
Mean R.A., Star's
No.
Mean
Name.
No. of
Annual Preces-
Secular Varia-
sion,
tion,
Date.
Obs.
Annual
1755-
2501
1800
1890-0.
+
... |
2503
Piazzi VIII. 119 8-5 Oeltz. Arg. (N.) 91849-0
32. 50-229
9623
3
32
54-093
95-57
2
Mali
33-
W259
90-49
SnS'O*
-
3 i
W'6 k'6*
38 Cancri
1220 j
2505
!
I2I 4
2507
1465
34 Lyncis
1466
2506
95-86;
3
33- 24-694'
95-12.
3
Groombridge 1466.. 7"8
8. 33.
26-561
Piazzi VIII. 124
7-2
8- 33-
32-037
1467... 7 '4
8- 33-
36-171
.
...
33- 23-428
95-44
+ + + + + + + + + +
'
...
Groombridge
1467
W. W.
2509 2510
2512
Preces-
Secular Varia-
sion,
tion,
Date.
I
;
B. (2) VIII. 790 7'7 B. (2) VIII. 793 8-0
1890-0.
1800
1890-0.
+
Sgo'O.
0-0130
3-4543
..
-0-0365] 2-5637 +o-ooi8| 3-4575
0-0131'
4-1664
0-0380-1-0 -ooi
4-1311
18-41
95 '97
+ 12
44. 42. 22-57
95-57
+12-4081+0468
IIS. 52. 13-29
90-49
4-57
96-18
43- 46. 5I-83
95-12
70.
4-I335
0-005
3-0365
I.
69. 50.
6-22
44- 43-
0-0130;
70.
0-0298.
49- 35- 39 89
4.
19-36
,
!
93-53
8- 33-
37-830
8. 33-
39-I03
93-21
i
3-9643
3-4526
o-oi3oj 3-4523 10-01301
403;
+0-391
95-44
+ 12 426 +0-288 + 12-441 +0-390 + 12-443 +'47 + 12-4461+0-467
92-90
+12
93-53
+12-456, +0-448
93'77
O0l8 O'o88
r
45i|
+0-389
]
70.
3.
34-3I
70.
4.
I5-I4
93-03
+12-4581+0-389 + 12 45 9i +0-389
:
39 Cancri
..................
6-9
33 46-787
93-18
0-0075
69. 36. 16 ii
93-62
+12-468! +0-390
0-018
40 Cancri
..................
'7-0
33 5I-932
94-22
0-013210-0043
69. 38. 27-83
33 59-524
9467
0-0130!
70.
4.47-15
+12-474+0-390 + 124831+0388;
0-024
J8-o
9473 9465
34
95 96
0-0131
69. 55. 29-76
96-19
+12-486 +0-389
69. 56. 30-02
96-19
2514
B. D.
2515
1224
2516
1225
2517
...
42 Cancri
1228
2522
2524
1232
7
2526 2527
2528 2529
1469
2530
1463
1-817
34
3-210
95-96
8-455
93-35
34. 14-131
9564
8. 34-
^7-2
1468... 7 -2
8.
6-
8. 34.
24-268
95-93
8. 34-
37735
95-18
8- 35-
8-559
91-98
Bradley 1228 Mali ..................
8.
35- 30-973
95-9I
8.
35- 47-655
89-80
..................
&J3-9+ ............... ...............
8. 36.
y4'
A
1
3-4618
0-0133
+ 3-4544 0-0131 + 3'45'7 0-OI30 + 4-I272 [0-0366 + 3-4550 0-OI3I + 3-4518 0-0131 + 2-4908 i+0'0023 + 3-4568 0-0133 + 2-3467 -(-0-0028 + 3-4880 0-0143 + 3-3128 0-0097
48-85
94-73
+ 12 487 +0389 + 12-492+0-388 + 12-499: +0-465 + I2-5II] +0-388 + 12-5271 +0-388
-So
91-98
+12-562
'
Bradley 1227 .......... 7-7 Mali
43 Canuri 45 Cancri
2525
...............
Groombridge
2520
1230
+20
41 Cancri
1468
I22/
2523
.....
No. 2165:8-3 Bradley 1224 ......... 7-1
1226
5 6'
Hydrse
47 Cancri S4'3' B. D. +i7No. 19259-0 Piazzi VIII. 137 6-o*j
55-182 8-613
8. 37.
28-446
8899
8. 38.
25-989
93-32
8. 38.
39-789
93 '94
0-006 ;
!
;
;
92-83
8. 37-
0-004
:
+
!
0-003 0-007
O'll
93-00
44. 44. 47-46
95-64
69. 53. 29-98
96-16
70.
70.
4.
i.
119. 10.
1 1
O'OOO -0-0087 -O-OOI2
4-10 6-88
95-91
11-48
92-74
69. 44.
0-0058 -O-OO29
+ 3-4183 0-0125 + 3-3983 0-0120 + 5-5083 0-1224 + 2-4108 .-(-0-O028 + 9-I675 0-5713 + 11-5803 1-0500 + 3^953 0-0120 + 3 6441 0-0195 + 3 6439 0-0195 + 3-4029 0-0122 + 9905 -0-1653 + 3-1946 0-0071 + 2-597I +0-0019
51-156
94 5
3
8- 39-
10-357
93-94
4
124. 55. 68.
8.
Groombridge 1463... 7-3
8. 39.
20-078
93-85
Lalande F. 1339 7-0 B.D. +17 No. 19319-3
8. 39.
52-869
96-17
i
2531
2532
8- 39-
53-4I5
93-28
4
8. 40.
0-531
[
2535
3
|
W. B. (2) VIII. 9586-5! 48 Cancri i4"4t Lalande 17260 8-3
I2 39
.
4
8. 40.
8.
95^7
2-376 40. 16-202
9
93-I5
3
+ + 12
89-80
76. 55- 30-58
95-26
86. 12. 24-78
89-04
0-O026
71. 26. 31-44
92-89
2 08
93-94
72. 26.
22. 53. 21-49
94-50
122. 47. 25-38
9394
9- 33-
38-53
91-55
6. 51.
5878
j
a3 -6*
'
I
...
O'OO O'OOI I
I
+0-003 +O-OO4
278
;
96-17
72. 30. 42-72
93-18
0-0016
60. 49. 58-66
0-0016
60. 50. 17-80
95^9 9373
6. 1
-09
93 '5
j
72.
1
o-oo
12-587 +0-387 606!
+o
261
o-oo
+12-682 +0-389 12 698 +0-368 +12-719 +0349
+0-033
+12-785 +12-800 +12-813 +12-834 +12-845
+0-226
+ j
3-1410
+o
...
i
t
-O-OO4I
j
8. 38.
Mali
2533 2534
Proper Motion.
1223
Piazzi VIII. 128
2521
I
1222
2513
2518 2519
Annual
1890-0.
;
2508
25U
Annual
Mean
iSio.
2502
2504
MeanN.P.D.,
Proper Motion.
1890-0. to
{liii}
+0-378
+0376 +0-612 +0-265
+ I-O2I + 1-289
+12-882 +12-882 +0-374 +0-402 +0-033 + 12-892 +0-402 +0-033 +12-908 +0-374 |
j
i
2536 2537
2538 2539 2540
1470 I
11
1243 ...
|
Groombridge 1470... 6 "8 Hydrse ^3-8
8. 40.
40-224
91-86
2
8. 40.
57-002
93-05
56
Lacaille 3503
8.41.
3-718
94-67
3
Lalande F. 1355
7-6
8.
41.
6-779
96-02
i
4'4*
8. 41.
10-698
96-23
3
D.+i 7 No. 19399-3 Lalande 17333 6-5*
8. 41.
37-615
93-24
4
8. 41.
44-642
88-48
3
12 Hydrse
1244
5-8*
B.
2541
2542
2545
W. B. (2) VIII. 10067-5 Groombridge 1471... 6 '8 B.D. +17 No. 19439-3
2546
Lalande F. 1347
2543 1471
2544
2547
1248
13
Hydra
7-0
No. 19459-5
B. D.
+17
2549
B. D.
+i7No.
19469-5 No. 19479-5
4
4i- 53-I94 '
p4'3*j
2548
B.D. +17
8'
5
+ 10-0630
+ + + + + +
3-3820
0-0117
+0-0007
42. 36-084
96-29
+"'53
93-80
6
+ + + +
3 3
42. 59-907
92-70
4
3-30
95-99
8.
45-54
96-29
73-
5-
18-83
IO8. 21. 20-22
51.
i
93-18
8. 18.
103.
72. 12.
4
89-16
9467
0-0287 o 0119
93-I9
j
114. 59. 17-05
0-0122
42. 20-331
42. 52-999
93-59
3'399
5
42. 38-504
91-64
17.
3 8887
93-93
j
0-0006+0-0005
2 7349
41. 54-473
42. 36-378
0-7423
28344
40 47
83. 10. 41 61
19.
0-0135
3-3882
9
1-0644
3-I835
0-0069
I
3'3867 j
3-3920
I
'
3-3930
0-0119 O-OI2I O-OI2I
2'94 0-6 5
93-23
72. 43. 41-49
93'!9
15.
6. 50.
0-0026
88-48
11-48
9348
96-29
83- 45- 2 3'29 72. 47. 12-41
93' 18
72. 29. 52-38
89-16
72. 26. 15-81
8849
2522. The magnitude of tliis star is taken from the Southern Meridian Plwtometry. 2533-2534- These stars form the pair 1. 1268. 2 537- This star is the principal star of a pair, and was itself found to be a close double by Schiaparelli.
+0662
+12-934 +12-953 +12-961 +12-964 +12-969
+0-350 +0-023 +0-283 +1-114 +0-310 +0-009
+12-999 +13-007 +13-016 +13-017 +13-046
+0-370 +0-298 +0-372 +0-426 +0-370
+13-063 + 1-270 +13-063 +0-347 +0-021 +13-067 +0-369 +13-082 +0-369 1+13-090 +0-369
{liv}
No.
SECOND TES-YKAK CATALOGUE OK STARS FOR 1890-0,
FKOM OBSERVATIONS AT THE EOYAL OBSERVATORY, G-REENAVICH, 1887 TO 1896.
No.
{Ivi}
No.
SECOND TEN-YEAR CATALOGUE OF STARS FOR 1890-0,
FROM OBSERVATIONS AT THE EOYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
No.
{Ivii}
{Iviii}
m>,
SECOND TEN-YEAR CATALOGUE OF STARS FOR 1890-0,
FEOM OBSERVATIONS AT THE EOYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
No.
{lix}
SECOND TEN-YEAR CATALOGUE OF STARS FOR 1890-0,
No.
FROM OBSERVATIONS AT THE EOYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
No.
{Ixi}
{Ixii}
No.
SECOND TEN-YEAR CATALOGUE OF STARS FOR 1890-0,
FROM OBSERVATIONS AT THE ROYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
No.
{Ixiii}
{Ixiv}
No.
SECOND TEN-YEAR CATALOGUE OK STARS FOB 1890
0,
FKOM OBSERVATIONS AT THE EOYAL OBSEKVATOKY, GREENWICH, 1887 TO 1896.
No.
{IxV}
{Ixvi}
No.
SECOND TEN-YEAR CATALOGUE OF STARS FOR 1890-0,
FROM OBSERVATIONS AT THE KOYAL OBSERVATORY, GREENWICH, 1887 TO
No.
189(5.
(Ixviii}
X<>.
SECOND TEN- YEAR CATALOGUE OF STARS FOR 1890-0,
FEOM OBSERVATIONS AT THE EOYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
No.
{Ixix}
{Ixx}
No.
SECOND TEN- YEAR CATALOGUE OF STARS FOR 1890-0,
FROM OBSERVATIONS AT THE EOYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
No.
{Ixxi}
{Ixxii}
No.
SECOND TEN-YEAI; CATALOGUE OF STARS FOR 18900,
FROM OBSERVATIONS AT THE EOYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
{Ixxiii}
{Ixxiv}
No.
SECOND TEN- YEAR CATALOGUE OF STARS FOR 1890-0,
FROM OBSERVATIONS AT THE EOYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
No.
{Ixxv}
{Ixxvi}
No.
SECOND TEX-YEAR CATALOGUE OF STARS FOR 1890-0,
FROM OBSERVATIONS AT THE ROYAL OBSERVATORY, GREENWICH, 1887 TO 189G.
No.
{Ixxvii}
{bcxviii}
No.
SECOND TEN-YEAR CATALOGUE OF STAKS FOR 1890-0,
FROM OBSERVATIONS AT THE EOYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
No.
{Ixxix}
{Ixxx}
No.
SECOND TKN-YEAK CATALOGUE OF STARS FOR 1890-0,
FROM OBSERVATIONS AT THE EOYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
No.
{Ixxxij
{Ixxxii}
No.
SECOND TEN-YEAR CATALOGUE OF STABS FOE 1890-0,
FROM OBSERVATIONS AT THE ROYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
No.
{Ixxxiii}
{Ixxxiv}
No.
SECOND TEX-YEAU CATALOGUE OF STARS FOR 1890-0,
FROM OBSERVATIONS AT THE EOYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
No.
{Ixxxv}
{Ixxxvi}
No.
SECOND TEN-YEAR CATALOGUE OF STARS FOR
1890-0,
FKOM OBSERVATIONS AT THE ROYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
No.
{Ixxxvii}
{Ixxxviiij
No.
SECOND TEN-YEAR CATALOGUE OF STARS FOR 1S90-0,
FROM OBSERVATIONS AT THE EOYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
No.
SECOND TEN-YEAR CATALOGUE OF STARS FOR 1890-0.
fat
FROM OBSERVATIONS AT THE EOYAL OBSERVATORY, GREENWICH, 1887 TO 1890.
No.
{xci}
SECOND TEN-YEAR CATALOGUE OF STABS FOR 18900,
iNo. i
FROM OBSERVATIONS AT THE EOYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
{xciii}
{xciv}
No.
SECOND TEX- YEAR CATALOGUE OF STARS FOR 1890-0,
FROM OBSERVATIONS AT THE EOYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
No.
{xcv};
{xcvi}
No.
SECOND TEN- YEAR CATALOGUE OF STARS FOR 1890-0,
FROM OBSERVATIONS AT THE ROYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
{xcvif}
(xcviii}
No.
SECOND TEN- YEAR CATALOGUE OF STARS FOE 1890-0,
FROM OBSERVATIONS AT THE EOYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
{xcix}
SECOND TEN- YEAR CATALOGUE OF STARS FOR 1890-0,
No.
FROM OBSERVATIONS AT THE ROYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
No.
SECOND TEN-YEAR CATALOGUE OF STARS FOR 1890-0,
FROM OBSERVATIONS AT THE EOYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
So.
{ciii}
{civ}
No.
SECOND TEN-YEAR CATALOGUE OF STARS FOR 1890-0,
FROM OBSERVATIONS AT THE ROYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
{cv}
(cvij
SECOND TEN- YEAR CATALOGUE OF STARS FOR 1890-0,
FROM OBSERVATIONS AT THE ROYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
{cvii}
{cviii}
'NO.
SECOND TEN-YEAK CATALOGUE OF STARS FOR 1890-0,
FROM OBSERVATIONS AT THE ROYAL OBSERVATORY, GREENWICH, 1887 TO 1S9G.
No.
{ex}
No.
SECOND TEN- YEAR CATALOGUE OF STARS FOR
1890-0,
FKOM OBSERVATIONS AT THE ROYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
{cxi}
{cxii}
So.
SECOND TEN-YEAR CATALOGUE OF STARS FOR 1890-0,
FROM OBSERVATIONS AT THE EOYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
"to
It No.
.Sj y,
'755-
{cxiii}
|cxiv}
;
No.
SECOND TEN-YEAR CATALOGUE OF STARS FOR 1890-0,
FKOM OBSERVATIONS AT THE ROYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
{cxvj
(CXVI
No.
SECOND TEX- YEAH CATALOGUE OF STABS FOR 1890-0,
FROM OBSERVATIONS AT THE EOYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
No.
{t-xvii}
{cxviii}
No.
SECOND TEN- YEAR CATALOGUE OF STARS FOR 1890-0,
FROM OBSERVATIONS AT THE ROYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
No.
{cxix}
{cxx}
No.
SECOND TEX-YKAR CATALOGUE OF STARS FOR 1890-0,
FROM OBSERVATIONS AT THE ROYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
No.
{cxxi}
{cxxii}
No.
SECOND TEX-YEAK CATALOGUE OF STARS FOR 1890-0,
FROM OBSERVATIONS AT THE EOYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
(cxxiii)
{cxxiv}
No.
SECOND TEN-YEAR CATALOGUE OF STARS FOR 1890-0,
FROM OBSERVATIONS AT THE ROYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
{cxxv
j
{cxxvi}
No.
6151
6152 6i5J 6154 6155
6156 6157 6158 6159 6160 6161
6162 6163 6164 6165
6166 6167 6168
6169 6170 6171
6172
6i73 6174 6175 6176 6177 6178 6179 6180 6181
6182 6183 6184 6185
6186 6187 6iSS
6189 6190 6191
6192 6i93 6194 6195
6196 6197 6198 6199 6200
SECOND TEN- YEAR CATALOGUE OF STARS FOR 1890-0,
FROM OBSERVATIONS AT THE ROYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
{cxxvii}
{cxxviii}
No.
SECOND TEN-YEAR CATALOGUE OF STARS FOR 1890-0,
FROM OBSERVATIONS AT THE EOYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
{cxxix}
{cxxx}
SECOND TEN- YEAR CATALOGUE OF STARS FOR 1890-0,
FROM OBSERVATIONS AT THE KOYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
{cxxxi}
{cxxxii}
SECOND TEN- YEAR CATALOGUE OF STARS FOR 1890-0,
FROM OBSERVATIONS AT THE EOYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
No.
{cxxxiii}
{cxxxiv}
No.
SECOND TEN-YEAR CATALOGUE OF STARS FOR 1890-0,
FROM OBSERVATIONS AT THE ROYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
No.
(cxxxv
J-
{cxxxvi}
SECOND TEN-YEAR CATALOGUE OF STARS FOR 1890-0,
FROM OBSERVATIONS AT THE ROYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
No.
{cxxxvii}
{cxxxviii}
No.
SECOND TEN- YEAR CATALOGUE OF STARS FOR 1890-0,
FROM OBSERVATIONS AT THE ROYAL OBSERVATORY, GREENWICH, 1887 TO 1896.
{cxxxix}
{cxl}
SECOND TEN- YEAR CATALOGUE OF STARS FOR 1890-0.
UNIVERSITY OF CALIFORNIA LIBRARY
BERKELEY Return This book
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to desk
from which borrowed.
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ASTRONOMY LIBRARY
LD 21-100m-ll,'49(B7146sl6)476
Yff
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UNIVERSITY OF CALIFORNIA LIBRARY
Q2476
aaBffiigi^^
GEEENWICH SECOND TEN-YEAE CATALOGUE OF 6892 STAES FOE 1890.
Appendix
II. to
Greenwich Observations, 1898.