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Latest Details
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Name
  Romanov V4  
AAVSO UID
000-BML-303 (389 observations)  
Constellation
Cygnus Sequence
J2000.0
21 31 39.74 +35 29 22.0  (322.91558 +35.48944) Search nearby
B1950.0 21 29 34.80 +35 16 05.2
Galactic coord. 83.417 -11.631
Other names

(Internal only)
2MASS J21313973+3529220 GALEX J213139.7+352922 GSC 02712-00575
NSVS 8716919 UCAC4 628-119121 USNO-B1.0 1254-0480115
WISE J213139.74+352922.0    
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Variability type
SRD
Spectral type --
Mag. range
12.8 - 13.5 V
Discoverer Filipp Romanov
Epoch
25 Mar 2016 (HJD 2457473.00) Ephemeris
Outburst --
Period 64.85 d
Rise/eclipse dur. --
Remarks
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1 Romanov, Filipp J-K= 0.77. FUV-NUV= -0.15. NSVS data contaminated by several stars, magnitudes have been corrected.
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References
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1 Kochanek, C. S.; et al., 2017, The All-Sky Automated Survey for Supernovae
(ASAS-SN) Light Curve Server v1.0
2017PASP..129j4502K
2 Wozniak, P. R.; et al., 2004, Northern Sky Variability Survey: Public Data
Release
2004AJ....127.2436W
External Links
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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 = 10.45H = 9.85K = 9.68J - K = 0.77
AllWISE W1 = 9.59W2 = 9.65W3 = 9.51W1 - W2 = -0.06
APASS-DR9 B = 14.06V = 12.90g' = 13.47r' = 12.45i' = 12.00B - V = 1.16
GALEX-DR5 FUV = 15.84NUV = 15.99FUV - NUV = -0.15
Images
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Supporting Documents
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2 Phase plot Romanov, Filipp 2017-10-04 02:53 UTC
1 ASAS-SN Light Curve Romanov, Filipp 2017-10-03 17:32 UTC
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Revision History
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1 Romanov, Filipp 2017-10-04 03:59 UTC Initial submission.