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Latest Details
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Name
  2MASS J05311644+2157421  
AAVSO UID
--  
Constellation
Taurus Sequence
J2000.0
05 31 16.45 +21 57 42.0  (82.81853 +21.96167) Search nearby
B1950.0 05 28 16.05 +21 55 30.8
Proper motion
RA: -2.8 +/- 2.7 mas/yDec: -12.2 +/- 2.9 mas/ySource: UCAC4
Galactic coord. 184.194 -6.450
Other names

(Internal only)
ASASSN-V J053116.46+215742.1 USNO-B1.0 1119-0084003 VSX J053116.4+215742
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Variability type
EW
Spectral type G3
Mag. range
(0.65) V
Discoverer Robert A. Koff, AAVSO Code KRV
Epoch
01 Dec 2005 (HJD 2453705.93825) Ephemeris
Outburst --
Period 0.3386 d  (8.13 h)
Rise/eclipse dur. --
Remarks
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References
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1 Qian, S.-B.; Zhu, L.-Y.; Liu, L.; et al., 2020, Contact binaries at
different evolutionary stages		 2020RAA....20..163Q
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Catalog Data
Information from selected catalogs obtained by cross-matching to 2 arc seconds using the CDS X-Match Service. These data may not be complete.
2MASS J = 13.63H = 13.20K = 13.14J - K = 0.50
AllWISE W1 = 12.65W2 = 12.68W3 = 12.44W1 - W2 = -0.03
APASS-DR9 B = 16.00V = 15.09g' = 15.53r' = 14.83i' = 14.50B - V = 0.90
Images
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Supporting Documents
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2 Lightcurve of USNO-B1.0 1119-0084003 Koff, Robert 2006-06-09 09:43 UTC Phased lightcurve covering the time interval 12/2/2005 to 12/24/2005, in V band
1 Observations, USNO-B1.0 1119-0084003 Koff, Robert 2006-06-09 09:43 UTC Observations file. Differential photometry.
Used average of five comp stars:
GSC 1309 2919, GSC 1309 3448, GSC 1309 3613, GSC 1309 3854, GSC 1309 3522
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Revision History
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2 Otero, Sebastian Alberto 2023-04-23 16:53 UTC Spectral type from 2020RAA....20..163Q.
1 Koff, Robert 2006-06-09 09:46 UTC --

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