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  X Cep  
000-BCM-899 (5253 observations)  
Cepheus Sequence
20 56 10.14 +83 03 25.4  (314.04225 +83.05706) Search nearby
B1950.0 21 00 02.00 +82 51 42.0
Proper motion
RA: 5.0 +/- 1.9 mas/yDec: 11.3 +/- 3.5 mas/ySource: UCAC4
Galactic coord. 116.463 +23.387
Other names

(Internal only)
2MASS J20561005+8303252 AAVSO 2103+82 BD+82 634
GSC 04649-02410 HD 201305 IRAS 21000+8251
RAFGL 2690    
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Variability type
Spectral type M4.5e:-M7e
Mag. range
8.1 - 17.5: V
Discoverer --
21 Nov 1978 (HJD 2443834.00) Ephemeris
Outburst --
Period 535.19 d
Rise/eclipse dur. 42%
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1 GCVS Team OH emission?
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1 T. Karlsson, Maxima of Mira stars --
2 General Catalogue of Variable Stars, 4th Edition, Volumes I-III, P.N.
Kholopov et al.
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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 = 4.91H = 3.86K = 3.01J - K = 1.90
AllWISE W3 = 0.18W4 = -0.47W3 - W4 = 0.65
APASS-DR9 V = 16.17g' = 16.24r' = 13.03
Please review Digitized Sky Survey Acknowledgment and Copyright.
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Supporting Documents
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Revision History
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3 Otero, Sebastian Alberto 2013-03-13 16:23 UTC UCAC4 position. Minimum magnitude from AAVSO V data.
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.