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  V2051 Oph  
000-BBY-532 (13861 observations)  
Ophiuchus Sequence
17 08 19.09 -25 48 31.7  (257.07953 -25.80880) Search nearby
B1950.0 17 05 13.93 -25 44 37.1
Proper motion
RA: 7.8 +/- 32.5 mas/yDec: -77.4 +/- 10.5 mas/ySource: UCAC4
Galactic coord. 358.009 +8.623
Other names

(Internal only)
Please note that aliases shown in grey link to obsolete records.
2MASS J17081908-2548317 AAVSO 1702-25 Downes V2051 Oph
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Variability type
Spectral type WD+M6/8V
Mag. range
11.6 - 17.5 V
Discoverer --
12 Apr 1977 (HJD 2443245.9769) Ephemeris
Outburst --
Period 0.06242786 d  (89.89612 min)
Rise/eclipse dur. --
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1 GCVS Team Usually - 15.0m with strong flickering of brightness (up to 0.4m in 5 minutes) and rare flares. At the same time the eclipses are observed with depth to 2.5m with the elements: Min = 2444787.32124 + 0.062427865d*E [M.C.Cook, C.C.Brunt, MN 205, N2, 465, 1983.]; D = 0.0088P:, d = 0.0065P.
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1 Gaia Collaboration; et al., 2018, Gaia Data Release 2. Summary of the
contents and survey properties
2 T. Kato et al., 2009, arXiv:0905.1757v1 [astro-ph.SR] 2009arXiv0905.1757K
3 V2051 Ophiuchi after superoutburst: out-of-plane material and the superhump
light source
4 R.A. Downes et al., 2001, PASP 113, 764 (2006 archival version) 2005JAD....11....2D
5 R.A. Downes et al., 2001, PASP 113, 764 2001PASP..113..764D
6 B.Warner, M.Cropper, MN 203, N3, 909, 1983. 1983MNRAS.203..909W
7 G.Williams, ApJ Suppl 53, N3, 523, 1983. 1983ApJS...53..523W
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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 = 14.33H = 13.87K = 13.53J - K = 0.80
AllWISE W1 = 13.17W2 = 12.91W1 - W2 = 0.26
Please review Digitized Sky Survey Acknowledgment and Copyright.
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Supporting Documents
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 Legacy CVs
Revision History
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5 Otero, Sebastian Alberto 2020-05-14 20:22 UTC Gaia DR2 position.
4 Otero, Sebastian Alberto 2011-07-21 15:32 UTC Elements and range from 2008A&A...487..611P. Spectral type from Ritter and Kolb (2011, 2003A&A...404..301R)
3 Admin, VSX 2010-01-04 23:43 UTC Position updated from the GCVS version of November 2009.
2 Admin, VSX 2009-05-13 20:46 UTC Update from [2009arXiv0905.1757K].
1 Admin, VSX 2005-12-17 20:33 UTC Initial upload.