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Latest Details
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Name
  V0477 Cyg  
AAVSO UID
000-BCK-482 (8909 observations)  
Constellation
Cygnus Sequence
J2000.0
20 05 27.69 +31 58 18.1  (301.36537 +31.97169) Search nearby
B1950.0 20 03 29.55 +31 49 40.2
Proper motion
RA: 5.130 +/- 0.043 mas/yDec: -1.282 +/- 0.058 mas/ySource: Gaia DR1
Galactic coord. 69.375 +0.104
Other names

(Internal only)
AAVSO 2001+31 BD+31 3932 HD 190786
HIP 98955 IOMC 2674000056 SAO 69381
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Variability type
EA/DM
Spectral type A3V+F5V
Mag. range
8.5 - 9.34 V
Discoverer --
Epoch
11 Nov 1979 (HJD 2444189.2639) Ephemeris
Outburst --
Period 2.3469906 d
Rise/eclipse dur. 7%  (3.943 h)
Remarks
Some references may be clicked to view in new window. Roll over index number to view submission details.
1 GCVS Team Min II 8.69; D II = 0.09P; d = 0.003P. P var. Min I = 2429194.309 + 2.3470011d*E (JD2410000 - 29200) [General Catalogue of Variable Stars, 4th Edition, Volumes I-III, P.N. Kholopov et al.]; Min I = 2437317.2695 + 2.3469943d*E (JD2429200 - 39700) [P.Ahnert, MVS 7, H.6, 127, 1976.]; since JD2439700 - see Table. Apsidal motion with Pi = 349 years; E = 0.302 [D.J.K.O'Connell, Vistas in Astronomy 12, 271, 1970.]. 0.331P (1965 - 1970) <= Min II - Min I < = 0.460P (1904).
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References
Click reference title/citation to view in new window. Roll over index number to view submission details.
1 Bob Nelson's O-C files, 2016 --
2 J. Alfonso-Garzon, A. Domingo, J.M. Mas-Hesse, A. Gimenez, 2012,
arXiv:1210.0821 [astro-ph.IM] (online info)
2012arXiv1210.0821A
3 J.S. Nichols et al., 2010, ApJS 188, 473 (online data) 2010ApJS..188..473N
4 A.Wallenquist, Uppsala Medd N96, 1949. --
5 CALEB - Catalog and AtLas of Eclipsing Binaries --
6 General Catalogue of Variable Stars, 4th Edition, Volumes I-III, P.N.
Kholopov et al.
--
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 = 8.10H = 8.08K = 8.06J - K = 0.04
AllWISE W1 = 8.00W2 = 8.04W3 = 7.93W4 = 7.43W1 - W2 = -0.04W3 - W4 = 0.49
APASS-DR9
Images
Please review Digitized Sky Survey Acknowledgment and Copyright.
Size 5' x 5' (297 x 298 pixels)
Center 20 05 27.69 +31 58 18.1 (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.
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.