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Details for Revision 1
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Name
  V1727 Cyg  
AAVSO UID
000-BDP-525 (No observations)  
Constellation
Cygnus Sequence
J2000.0
21 31 26.20 +47 17 25.0  (322.85917 +47.29028) Search nearby
B1950.0 21 29 36.24 +47 04 08.5
Galactic coord. 91.578 -3.036
Other names

(Internal only)
2MASS J21312620+4717244 4U 2129+47 USNO-B1.0 1372-0512094
X 21296+471    
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Variability type
E+XR
Spectral type pec(e)
Mag. range
15.6 - 18.5 V
Discoverer --
Epoch
13 Jun 1980 (HJD 2444403.7429) Ephemeris
Outburst --
Period 0.2182579 d  (5.23819 h)
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto Neutron star companion. The F8IV star is possibly a third member of the system with a period of about 175 d.
2 GCVS Team 4U 2129 +47. Lx/Lopt ~10. Emissions in the spectrum: NeII lambda 4686A, CIII - NIII lambda lambda 4640 - 50A.
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References
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1 A Further Drop into Quiescence by the Eclipsing Neutron Star 4U 2129+47 2009ApJ...706.1069L
2 J.E.McClintock, R.A.London, H.E. Bond, A.D.Grauer, ApJ 258, 245, 1982. 1982ApJ...258..245M
3 J.Thorstensen, P.Charles, S.Bowyer, U.G.Briel, R.E.Doxsey, R.E. Griffiths,
D.A.Schwartz, ApJ 233, L57, 1979.
1979ApJ...233L..57T
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Supporting Documents
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Stellar Association Membership
 NGC 7082 Open Cluster 2012A&A...548A..97Z
Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
3 Otero, Sebastian Alberto 2011-08-16 02:49 UTC Type, spectral type, period and epoch from 2009ApJ...706.1069L. 2MASS 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.