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Name
  NSV 12981  
AAVSO UID
000-BCL-168 (10 observations)  
Constellation
Cygnus Sequence
J2000.0
20 16 55.30 +40 21 54.4  (304.23040 +40.36510) Search nearby
B1950.0 20 15 08.51 +40 12 33.9
Proper motion
RA: 2.27 +/- 0.23 mas/yDec: -1.38 +/- 0.21 mas/ySource: F. Van Leeuwen, 2007
Galactic coord. 77.667 +2.764
Other names

(Internal only)
AAVSO 2013+40 ADS 13640 A ASASSN-V J201655.38+402154.9
BD+39 4114 HD 193092 HIP 99968
HR 7759 IRC +40401 RAFGL 2544
SAO 49410    
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Variability type
VAR
Spectral type K5II
Mag. range
5.27 (0.006) V
Discoverer --
Epoch
--
Outburst --
Period 1.96835 d
Rise/eclipse dur. --
Remarks
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1 GCVS Team ADS 13640A (B 12.5, 12".6, 64deg, 1924); K4IIab-IIb. Espin. Var? [F.Kepinski, IAU Circ No.626, 1936.].
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References
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1 C. Koen, L. Eyer, 2002, MNRAS 331, 45 2002MNRAS.331...45K
2 E.Zinner, Erg AN 8, No.1, 1929. --
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Location    Go   
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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 = 2.70H = 1.84K = 1.56J - K = 1.14
AllWISE W3 = 1.49W4 = 1.34W3 - W4 = 0.14
APASS-DR9 B = 7.43V = 6.36g' = 7.13r' = 6.13i' = 5.08B - V = 1.07
Images
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Supporting Documents
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Revision History
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2 Admin, VSX 2013-05-03 23:36 UTC Update from [2002MNRAS.331...45K].
1 Admin, VSX 2005-12-18 01:33 UTC Initial upload.

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