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Name
  2MASS J20120292+4244273  
AAVSO UID
000-BJX-190 (No observations)  
Constellation
Cygnus Sequence
J2000.0
20 12 02.89 +42 44 27.0  (303.01204 +42.74083) Search nearby
B1950.0 20 10 20.93 +42 35 24.1
Galactic coord. 79.149 +4.834
Other names

(Internal only)
ASASSN-V J201202.89+424427.0 USNO-B1.0 1327-0474224 VSX J201202.8+424427
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Variability type
EA
Spectral type M1
Mag. range
16.8 V (0.55)clear
Discoverer Robert A. Koff, AAVSO Code KRV
Epoch
24 Jun 2006 (HJD 2453910.75567) Ephemeris
Outburst --
Period 0.7154: d  (17.17 h)
Rise/eclipse dur. 17%  (3 h)
Remarks
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1 Koff, Robert Period uncertainty: Alternate solution of 1.25 day, but poorer fit to data. Spectral class based on Henden sequence B-V of 1.391 Magnitude from Henden sequence = 16.795 V
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References
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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 = 13.98H = 13.50K = 13.26J - K = 0.72
AllWISE W1 = 13.10W2 = 13.15W1 - W2 = -0.05
Images
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Size 5' x 5' (297 x 298 pixels)
Center 20 12 02.89 +42 44 27.0 (J2000)
Source STScI
Survey

Red, all sky, 1.0 arcsec/pixel
  Negative
Supporting Documents
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2 Lighhtcurve for USNO B-1.0 1327-0474224 Koff, Robert 2006-07-07 20:14 UTC Phased lightcurve for six observing sessions from 6/14/2006 to 6/26/2006.
1 Observation Data file for USNO-B-1.0 1327-0474224 Koff, Robert 2006-07-07 20:14 UTC Observational data file.
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Revision History
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2 Huziak, Richard 2010-10-30 02:32 UTC V magnitude added from NOMAD database.
1 Koff, Robert 2006-07-07 16:14 UTC Period uncertainty: Alternate solution of 1.25 day, but poorer fit to data.

Spectral class based on Henden sequence B-V of 1.391

Magnitude from Henden sequence = 16.795 V

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