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Name
  HAT-P-20  
AAVSO UID
000-BJX-976 (3669 observations)  
Constellation
Gemini Sequence
J2000.0
07 27 39.96 +24 20 11.9  (111.91650 +24.33664) Search nearby
B1950.0 07 24 38.09 +24 26 25.2
Proper motion
RA: -9.5 +/- 9.9 mas/yDec: -107.3 +/- 11.6 mas/ySource: UCAC4
Galactic coord. 194.415 +18.395
Other names

(Internal only)
2MASS J07273995+2420118 GSC 01910-00239 VSX J072739.9+242011
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Variability type
EP
Spectral type K3V
Mag. range
11.339 - 11.359 V
Discoverer Bakos, G.A., et. al
Epoch
06 Sep 2009 (HJD 2455080.9266) Ephemeris
Outburst --
Period 2.875317 d
Rise/eclipse dur. --
Remarks
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1 Dvorak, Shawn According to the discovery paper, the variable has a close red companion 2MASS J07273963+2420171 with a separation of 6.86". The companion is reported to be 1.36 mag fainter in R band than the target.
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References
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1 HAT-P-20b--HAT-P-23b: Four Massive Transiting Extrasolar Planets arXiv:1008.3388v1
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 = 9.28H = 8.74K = 8.60J - K = 0.68
AllWISE W1 = 8.56W2 = 8.65W3 = 8.52W4 = 8.06W1 - W2 = -0.09W3 - W4 = 0.45
APASS-DR9 B = 12.54V = 11.34g' = 11.91r' = 10.85i' = 10.37B - V = 1.20
GALEX-DR5 NUV = 19.73
SDSS-DR12 u = 14.99g = 12.26r = 13.62i = 12.07z = 12.41u - g = 2.73r - i = 1.54
Images
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Supporting Documents
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Revision History
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2 Otero, Sebastian Alberto 2012-07-12 05:58 UTC Primary name changed.
1 Dvorak, Shawn 2011-01-08 19:58 UTC Initial submission.

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