Anomalies in the WDS

Anomalies in the WDS.


Description

Below is a table of stars that do not correspond to the current WDS information on them.

The WDS column gives the discoverer's name for the star, the last observed date, the magnitudes of the stars, their position angle in degrees and separation in arc minutes.

The next four columns give listings of stars found within a 30" box of the WDS position. The top line given the catalog number of the star, followed by it's J2000 position, and finally its visual magnitude. Multiple stars in a given catalog are listed in the same table cell.

Note that the UCAC4 listing is only of stars brighter than 12mv. The name of a star is augmented with it's UCAC4 "type", which gives the reliability of the listing, and APASS indicates that the AAVSO visual magnitude has been used as the magnitude.

The final 2 columns list what I found looking at the wikisky.org's copy of the DSS2 all sky survey plates and through my C-8 in my backyard observatory.

A dash in a column entry means there was no star found at that location or that the data is missing.

All coordinates are J2000.

Data.


WDSAC_2000Tycho GCVSUCAC_4WikiSkyLittle Tycho
L 55 Observed in 1910
2h 41m 18s, 26° 59' 0"
8.0-9.0mv, 50°pa, 6.8"sep.
- --- No 8mv star seen -
L 56 Observed in 1910
3h 6m 18s, 25° 16' 0"
10.0-10.0mv, 137°pa, 2.1"sep.
- ---No stars seen Field found, star non existent.
L 57 Observed in 1910
3h 6m 18s, 25° 15' 0"
7.5-8.0mv, 41°pa, 1.5"sep.
- ---No stars seen Field found, star non existent.
ES 274 Observed in 2002
3h 28m 32.43s, 35° 59' 18"
9.3-9.4mv, 144°pa, 3.2"sep.
1304528
3h 28m 32.37s, 35° 59' 19.67"
11.77
1204722
3h 28m 32.44s, 35° 59' 17.73"
11.26
2354-02142-1
3h 28m 32.43s, 35° 59' 18"
12.081
-- HD 278630, 12.05mvA difficult pair. They seem more like
11.5mv stars rather than the listed 9.3-9.4mv.
Otherwise, as per the WDS, 2002.
KOH 10 Observed in 1997
4h 24m 48.18s, 26° 43' 15"
8.0-10.0mv, 320°pa, 0.5"sep.
886117
4h 24m 48.07s, 26° 43' 18.62"
11.96
-- 136820729 APASS OK
4h 24m 48.15s, 26° 43' 16.04"
11.579
A pair of 11mv stars, in 25° pa, 14" sep. The field was found, but the star was not seen. Skies hazy.
KOH 25 Observed in 1997
4h 45m 51.29s, 15° 55' 49"
7.4-9.0mv, 177°pa, 13.0"sep.
467788
4h 45m 51.21s, 15° 55' 51.37"
11.11
1267-00425-1
4h 45m 51.29s, 15° 55' 49.7"
9.447
V 1206 Tau
4h 45m 51.29s, 15° 55' 50"
Variation: 9.18 - 9.41mv
- Identified as HD 30171, 9.37mv Star field found, but the pair was not seen. The star at the marked position was 9mv, not 7.5mv. GCVS lists it as V1206 Tau, 9.2-9.4mv variation.
L 58 Observed in 1910
6h 20m 8.35s, 22° 2' 5"
11.4-11.9mv, 121°pa, 1.2"sep.
--- - No 11mv stars seen -
HDO 111 Observed in 1870
7h 55m 54s, -19° 38' 0"
8.-8.mv, 170°pa, 8.0"sep.
---- A triangle of 2 11mv and 1 10.5mv stars found. The field was found but no star was there.
RAB 1 Observed in 1914
9h 0m 30s, 6° 17' 0"
9.-9.mv, 11°pa, 7.9"sep.
-- -- The closest candidate is TYC 232-526-1. It's diffraction spikes do not show a 7.9" binary. Field found, star not seen.
L 60 Observed in 1910
18h 35m 54s, 20° 18' 0"
9.0-9.0mv, 183°pa, 1.8"sep.
---- No 9mv stars seen.Star does not exist.
L 39 Observed in 2002
18h 36m 46.62s, 11° 51' 56"
9.0-9.5mv, 216°pa, 2.2"sep.
---- There is an 11mv star at this position. The 9mv star does not exist.
BEI 2 Observed in 1979
22h 19m 18.39s, 63° 18' 45"
6.14-8.46mv, 74°pa, 11.0"sep.
---- Nothing but a bit of nebulosity. The field was found, but not the star. There is a pair of 10-11mv stars in pa 285°, but no 6mv star. The stars are in a cluster which is not in the NGC or IC. WikiSky: A cluster with nebulosity. The nebulosity is cataloged as SH2-140.
ES 230 Observed in 2008
2h 14m 22.31s, 38° 9' 49"
9.3-9.9mv, 301°pa, 2.7"sep.
1295140
2h 14m 21.93s, 38° 9' 50.67"
11.93
1295141
2h 14m 22.07s, 38° 9' 50.42"
11.00
2830-00202-1
2h 14m 22.35s, 38° 9' 49"
11.031
-151225159 APASS OK
2h 14m 22.32s, 38° 9' 49.06"
10.508
USNOA 1275-01345650 found at the WDS position A difficult pair, as the stars are 11mv, not 9.5mv. As per the WDS, 2008
BJN 1 Observed in 2010
1h 42m 48.87s, 43° 48' 4"
9.4-9.4mv, 31°pa, 7.8"sep.
1418593
1h 42m 48.72s, 43° 48' 4.85"
11.87
--- A pair of ~12mv stars found. As per the WDS, 2010, but these are not 9.5mv stars, they are 12.5mv or so! A difficult pair for a C-8.
BJN 4 Observed in 2011
1h 55m 19.57s, 46° 47' 4"
9.2-9.2mv, 169°pa, 7.3"sep.
1420708
1h 55m 19.43s, 46° 47' 5.43"
11.60
---USNOA2 1350-01289670, 12.9mv and USNOA2 1350-01289119, 13.1mv found at 1h 20m 5.37s, 46° 48' 32.9" A very faint pair, not 9.5mv. More like 12.5mv. Otherwise, as per the WDS, 2011.