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Name
  Q Cyg  
AAVSO UID
000-BCP-164 (7227 observations)  
Constellation
Cygnus Sequence
J2000.0
21 41 43.93 +42 50 29.1  (325.43304 +42.84142) Search nearby
B1950.0 21 39 45.44 +42 36 46.5
Proper motion
RA: -0.7 +/- 5.3 mas/yDec: -6.0 +/- 5.0 mas/ySource: UCAC4
Galactic coord. 89.929 -7.552
Other names

(Internal only)
Please note that aliases shown in grey link to obsolete records.
AAVSO 2137+42 BD+42 4182 Downes Q Cyg
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Variability type
NA
Spectral type pec(NOVA)
Mag. range
3 - 15.6 V
Discoverer J. Schmidt
Epoch
24 Nov 1876 (HJD 2406583.0000) Ephemeris
Outburst 1876
Period 0.4202 d  (10.08 h)
Rise/eclipse dur. --
Remarks
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1 GCVS Team In minimum brightness varies periodically with the amplitude 0.5m: Max = 2440495 + 54.99d*E; P = 64.81d is also possible. Mean level of brightness varies in the range 15.2m - 15.9m B.
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References
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1 Catalogue of Stellar Spectral Classifications (Skiff, 2005) 2006PASP..118..687P
2 R.A. Downes et al., 2001, PASP 113, 764 (2006 archival version) 2005JAD....11....2D
3 R.A. Downes et al., 2001, PASP 113, 764 2001PASP..113..764D
4 S.Yu.Shugarov, Perem. Zvezdy 21, N6, 807, 1983. 1983PZ.....21..807S
5 M.L.Humason, ApJ 88, 228, 1938. 1938ApJ....88..228H
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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 = 13.54H = 13.25K = 13.11J - K = 0.44
AllWISE W1 = 12.90W2 = 12.87W1 - W2 = 0.03
APASS-DR9 B = 15.18V = 14.72g' = 14.83r' = 14.57B - V = 0.46
Images
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Supporting Documents
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Campaigns/Programs
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Revision History
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4 Admin, VSX 2010-01-04 23:43 UTC Position updated from the GCVS version of November 2009.
3 Admin, VSX 2009-09-22 20:51 UTC Added orbital period from Downes et al. [2001PASP..113..764D].
2 Admin, VSX 2007-03-23 15:52 UTC Discoverer added.
1 Admin, VSX 2005-12-17 20:33 UTC Initial database population.