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Details for Revision 2
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Name
  V0490 Cep  
AAVSO UID
000-BDL-540 (35 observations)  
Constellation
Cepheus Sequence
J2000.0
21 39 30.71 +56 59 10.7  (324.87796 +56.98631) Search nearby
B1950.0 21 37 56.18 +56 45 32.9
Galactic coord. 99.012 +3.313
Other names

(Internal only)
1H 2138+579 2MASS J21393068+5659104 AAVSO_DES 2136+56
CEP X-4 X-4 CEP  
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Variability type
XP
Spectral type --
Mag. range
15.2 - 15.8 B
Discoverer --
Epoch
--
Outburst --
Period --
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto Pulse period 66.3 seconds.
2 Otero, Sebastian Alberto V= 14.3
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References
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1 On the cyclotron line in Cepheus X-4 2007A&A...470.1065M
2 Catalogue of high-mass X-ray binaries in the Galaxy (4th edition) 2006A&A...455.1165L
3 V.P.Goranskij, Private communication, 1997. --
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Supporting Documents
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Stellar Association Membership
 Trumpler 37 Open Cluster 2012A&A...548A..97Z
Revision History
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5 Otero, Sebastian Alberto 2011-05-23 21:14 UTC Orbital period and type from reference.
4 Otero, Sebastian Alberto 2011-05-23 08:35 UTC Type from reference.
3 Otero, Sebastian Alberto 2011-05-19 23:21 UTC Primary record creation. Spectral type from Skiff (2010). UCAC3 position.
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.

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