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Latest Details
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Name
  AH Cyg  
AAVSO UID
000-BDN-294 (35 observations)  
Constellation
Cygnus Sequence
J2000.0
20 00 36.70 +40 10 48.3  (300.15292 +40.18008) Search nearby
B1950.0 19 58 51.75 +40 02 28.5
Proper motion
RA: 0.1 +/- 0.9 mas/yDec: -7.4 +/- 0.9 mas/ySource: UCAC4
Galactic coord. 75.828 +5.282
Other names

(Internal only)
AN 175.1908 ASASSN-V J200036.83+401047.6 BD+39 3997
IOMC 3154000049 IRC +40372 RAFGL 5454S
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Variability type
SRB
Spectral type M6.5
Mag. range
10.8 - 12.3 p
Discoverer L. Ceraski (21 November 1908)
Epoch
30 Jun 1939 (HJD 2429445) Ephemeris
Outburst --
Period 112 d
Rise/eclipse dur. 40%:  (45 d)
Remarks
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References
Click reference title/citation to view in new window. Roll over index number to view submission details.
1 J. Alfonso-Garzon, A. Domingo, J.M. Mas-Hesse, A. Gimenez, 2012,
arXiv:1210.0821 [astro-ph.IM] (online info)
2012arXiv1210.0821A
2 B.V.Kukarkin, P.G.Koulikovsky, Perem. Zvezdy 7, N3, 149, 1949. 1949PZ......7..149K
3 Ceraski, W., 1908, Deux variables nouvelles 1908AN....179..291C
External Links
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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 = 3.33H = 2.35K = 1.84J - K = 1.49
AllWISE W3 = 1.27W4 = 0.68W3 - W4 = 0.60
Images
Please review Digitized Sky Survey Acknowledgment and Copyright.
Size 5' x 5' (297 x 298 pixels)
Center 20 00 36.70 +40 10 48.3 (J2000)
Source STScI
Survey

Red, all sky, 1.0 arcsec/pixel
  Negative
Supporting Documents
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Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
3 Billiaert, Bruno 2016-02-05 01:15 UTC Discoverer from 1908AN....179..291C.
2 Admin, VSX 2010-01-05 04:43 UTC Position updated from the GCVS version of November 2009.
1 Admin, VSX 2005-12-18 01:33 UTC Initial upload.