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Name
  V1396 Cyg  
AAVSO UID
000-BCV-729 (2 observations)  
Constellation
Cygnus Sequence
J2000.0
21 00 05.34 +40 04 13.0  (315.02225 +40.07028) Search nearby
B1950.0 20 58 08.68 +39 52 39.4
Proper motion
RA: 616.30 mas/yDec: -249.00 mas/ySource: F. Van Leeuwen, 2007
Galactic coord. 82.438 -3.958
Other names

(Internal only)
1RXS J210005.1+400417 AAVSO 2056+39 G 210-48
GJ 815.0 AB HIP 103655 IOMC 3172000057
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Variability type
UV+BY:
Spectral type M3Ve
Mag. range
11.4 - 11.65 B
Discoverer --
Epoch
--
Outburst --
Period --
Rise/eclipse dur. --
Remarks
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1 GCVS Team VB AB (10.26m V, 12.3m V; A = 0.1127", P = 29.33 Y [J.Russell, G.Gatewood, AJ 85, N9, 1270, 1980.]); mu = 0.67", P = 113deg; A-SB 2 (mAb - mAa = 0.6m, P = 3.275631d [F.Fekel Jr., B.W.Bopp, C.H.Lacy, AJ 83, 1445, 1978.]). Probably all the three components of the system are variables of the UV Cet type, and according to [W.Krzeminski, "Low Luminosity Stars", ed. by Sh.S.Kumar, 57, 1969.] also of the BY Dra type. The range of combined brightness of the system is given in the Table. Really the flare of AB component was observed in the spectrograms [F.Fekel Jr., B.W.Bopp, C.H.Lacy, AJ 83, 1445, 1978.].
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References
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1 J. Alfonso-Garzon, A. Domingo, J.M. Mas-Hesse, A. Gimenez, 2012,
arXiv:1210.0821 [astro-ph.IM] (online info)
2012arXiv1210.0821A
2 N.I.Shakhovskaya, Izv. Krymsk. Astrofiz. Obs. 45, 124, 1972. 1972IzKry..45..124S
3 P.F.Chugajnov, Izv. Krymsk. Astrofiz. Obs. 48, 3- 22, 1973. --
External Links
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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 = 6.67H = 6.09K = 5.88J - K = 0.79
Images
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Supporting Documents
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Revision History
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2 Admin, VSX 2010-01-04 23:43 UTC Position updated from the GCVS version of November 2009.
1 Admin, VSX 2005-12-17 20:33 UTC Initial upload.