===============================================================================
04047-0303 LDS3555 1960 1960 1 115 115 32.0 32.0 12.3 15.6
04048-0302 LDS6163 1960 1960 1 115 115 32.0 32.0 12.3 15.5
12492-0450 LDS5759 1960 1960 1 87 87 17.0 17.0 13.4 17.2
12493-0450 LDS6268 1960 1960 1 87 87 17.0 17.0 13.4 17.2
The above pairs of systems seem to be listed twice. While the earlier number
was found with appropriate Luyten reference, the higher number was not listed
in the last known Luyten publication (Luy1985 = LUY96 = Luyten, W.J., Univ.
Minnesota Palomar Surv. No. 67, 1985). The second listed system in each pair
has therefore been deleted.
10350+5402 LDS2869 1955 1955 1 208 208 33.0 33.0 13.3 13.5 -171 -010
10349+5401 LDS2869 1960 1960 1 305 305 7.0 7.0 13.4 13.6 -210 -044
In the above case, the second LDS system was not in the proper Luyten
publication appropriate for that number. It is likely that it was here given as
a remeasurement. The first LDS system has therefore been deleted.
22044-0331 LDS4940 1960 1960 1 186 186 11.0 11.0 16.5 20.0 +243 000
22060+3724 LDS4940 1960 1960 1 79 79 33.0 33.0 13.5 17.2 +141 -064
14415+2957 LDS6298 1960 1960 1 103 103 6.0 6.0 13.1 14.4 -225 -069
14579+2953 LDS6298 1960 1960 1 314 314 27.5 27.5 11.0 18.8 K0 +035 -200 +30 2592 p
For the above two systems, the sequential numbering of LDS systems by RA has
allowed us to identify the second LDS4940 should be LDS4943 and the second
LDS6298 should be LDS6299. These have been changed.
If anyone has information regarding these systems or especially the later
numbered Luyten pairs, please notify us.
===============================================================================
Following communication with the Tycho-2 team, the following new Tycho double
stars have been removed in addition to the earlier excising of TDS1229.
01444+6037 TDS 60 1991 1991 1 134 134 1.7 1.7 10.63 12.34
03588+0332 TDS 123 1991 1991 1 248 248 1.4 1.4 11.12 11.35
04191-0409 TDS 133 1991 1991 1 78 78 1.1 1.1 10.84 12.12
05372-0635 TDS 188 1991 1991 1 317 317 1.1 1.1 10.17 11.63
06122+5014 TDS 227 1991 1991 1 280 280 2.1 2.1 9.67 11.36
07386-2830 TDS 391 1991 1991 1 223 223 2.0 2.0 9.76 12.11
08455-2812 TDS 491 1991 1991 1 233 233 1.9 1.9 9.55 11.74
08557-0908 TDS 502 1991 1991 1 115 115 1.1 1.1 9.76 11.88
09476+1126 TDS 555 1991 1991 1 277 277 1.5 1.5 8.93 11.35
16293-4428 TDS 815 1991 1991 1 84 84 2.0 2.0 9.97 12.48
18440+3216 TDS 940 1991 1991 1 346 346 0.9 0.9 11.36 11.85
22103+3845 TDS1161 1991 1991 1 130 130 2.0 2.0 10.12 12.46
23353+1813 TDS1216 1991 1991 1 2 2 1.2 1.2 11.85 12.49
===============================================================================
An aberrant measure of 20176-1230HJ 607AC made by Wirtz (Ann. Strasbourg Obs.
4, Pt.2, 1912) was apparently of the close component 20176-1230HDS2895Aa. The
discovery designation has been changed to 20176-1230WZ 15Aa.
===============================================================================
Some stars listed twice under different discovery designations include:
a. COU2387 = HDS2046
Couteau star discovered earlier. Put at wrong coordinate in the WDS. Couteau
number retained at HDS position.
b. STF2736 = HJ 1593
While the HJ 1593 measure is older, these are folded it in under the
STF2736 name which is the more common nom de guerre of this system. The HJ
measure is also a bit off, so is given a "T" code.
c. ES 50 = TDS 94
The older, and more often measured ES name is retained here, but put at the
TDS coordinate.
d. OL 233 = COU 332
Couteau commented on the possible identity of these two, but still assigned
a Couteau number. Both have approximately the same orientation and position.
e. BU 1348BC = BU 1348AD
f. STF 418 = PRZ 4
STF 418 discovery much earlier, though PRZ 4 is at the right coordinates.
g. STF 621 = AG 83
STF 621 (= ADS 3601) discovery earlier, though AG 83 (= ADS 3592) is at
the right coordinates.
h. STF 664 = CHE 79
The CHE 79 pair is not there, just an aberrant measure of STF 664.
Verified by DAL04.
i. STF 698AB = WZ 9AC
The WZ 9AC pair is not there, just an aberrant measure of STF 698.
Verified by DAL04.
j. STT 140AB = CHE 82.
k. ES 214 = J 3317
l. ROE 146 = COU2209
m. KU 97 = KU 144
n. COU2686 = HDS1312
o. BU 156 = HDS2994
p. LDS1431 = LDS5852
q. MLB 390 = STI 405
r. KR 32 = LDS2294
s. OL 224 = MLB 435
===============================================================================
March 2002
One of the more difficult issues in dealing with the WDS as a database is the
presence of duplicate discovery designations - that is, different systems
assigned the same 3-character + 4-digit designation. These generally fall into
one of two categories: systems given the same numbers but published in different
lists, and those given some additional designation appended to the original one.
Examples of the first are the binaries first resolved by W. Herschel and both
F.G.W. Struve and O. Struve. William Herschel published seven lists (I - VI,
plus "new", or N), with stars of each list starting at number 1. In addition
to their original discovery lists, each of the Struve's published an appendix,
as well as a list of "rejected" doubles. These multiple lists were completely
spelled out in the Aitken Double Star Catalogue (e.g., H IV 48), but when the
Index (IDS) Catalogue was compiled at Lick all of these other designators were
dropped for lack of space. As a result there are, for example, five components
with the designation H 48! The source Herschel list was given in the notes
file to the IDS. Appended and rejected stars from the lists of the Struve's
were handled in a similar manner.
In the second (and fortunately rare) case, systems found quite near to known
ones were given the same designation plus trailing character(s) (e.g., ES 1293a
or BU 885 1/2). Sometimes both components were assigned these additional
characters, sometimes only one; occasionally two pairs in an entirely different
section of the sky were given the same designation by the author (probably by
mistake).
Each of these cases is being handled in a different manner. For the William
Herschel discoveries, a list identifier is added to column three of each
designation. For example:
H 19 (at 16 hours) was originally H II 19 and is now known as H 2 19,
H 7 (at 18 hours) was originally H V 7 and is now known as H 5 7, and
N 111 (at 06 hours) was originally H N 111 and is now known as H N 111.
In the case of the O. Struve appendix an A is added following STT in the name.
For F. Struve, he provided two appendices. Those from the shorter list (Appendix
II) are designated STFB. For example:
STF 11 (appendix I) is now STFA 11.
STF 11 (appendix II) is now STFB 11.
STT 252 (appendix) is now STTA252.
Stars of the second type are given the same 3-letter discovery designation
but a new number, starting with 9001, to indicate that they originally had a
different designation. For example:
BAL2356b is now BAL9001.
BU 885 1/2 is now BU 9001.
A complete list of stars of the second type is provided below. All changes
in designation are described in the notes file.
18342+0341ABT9001 Previously known as ABT 13.
19542+0157ABT9002 Previously known as ABT 14.
08598+0316BAL9001 Previously known as BAL2356b.
00052+4514BU 9001 Previously known as BU 997a.
05182+3739BU 9002 Previously known as BU 885 1/2.
00052+4514ES 9001 Previously known as ES 1293a.
05595+5853ES 9002 Previously known as ES 66a.
17400+4046ES 9003 Previously known as ES 1556a.
17444+4027ES 9004 Previously known as ES 1556b.
21121+4543ES 9005 Previously known as BU 160.
07137-2005FOX9001 Previously known as FOX 12a.
05139-5648HJ 9001 Previously known as HJ 5450a.
07222-2412HJ 9002 Previously known as HJ 5451a.
09215-4528HJ 9003 Previously known as HJ 5452a.
18160-5333HJ 9004 Previously known as HJ 5453a.
19095-4934HJ 9005 Previously known as HJ 5088d.
19095-4937HJ 9006 Previously known as HJ 5088b.
19096-4940HJ 9007 Previously known as HJ 5088c.
06357-4129I 9001 Previously known as I 1154 1/2.
06428-4051I 9002 Previously known as I 1156 1/2.
15171-5948I 9003 Previously known as I 1074 1/2.
17583-3810I 9004 Previously known as I 1347 1/2.
19101-2907I 9005 Previously known as I 1136 1/2.
01455-6035JSP9001 Previously known as JSP 13a.
05157-6000JSP9002 Previously known as JSP 71a.
06412-0759PRT9001 Previously known as PRT 1.
11487-6134R 9001 Previously known as R 176a.
09080-5808RST9001 Previously known as RST3624a.
11166-5215RST9002 Previously known as RST2737a.
11250-5236RST9003 Previously known as RST 541a.
11446-4925RST9004 Previously known as RST3558a.
14540-6333RST9005 Previously known as RST 730a.
18211-1339RST9006 Previously known as RST4585a.
18326-4936RST9007 Previously known as RST2060a.
20384-2100RST9008 Previously known as RST5551a.
21500-6319RST9009 Previously known as RST1110a.
19531+5432STI9001 Previously known as STI2471a.
07448-3344STN9001 Previously known as STN 60 1/2.
21406-4813VOU9001 Previously known as VOU 30.
Designations for 271 W. Herschel (H ), 602 F. Struve (STF) and 319 O. Struve
(STT) systems have been changed.
===============================================================================