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Latest Details
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Name
  IR Com  
AAVSO UID
000-BBT-091 (5304 observations)  
Constellation
Coma Berenices Sequence
J2000.0
12 39 32.13 +21 08 06.4  (189.88387 +21.13511) Search nearby
B1950.0 12 37 02.83 +21 24 34.6
Proper motion
RA: -28.1 +/- 4.4 mas/yDec: 1.4 +/- 5.6 mas/ySource: UCAC4
Galactic coord. 277.932 +83.421
Other names

(Internal only)
Please note that aliases shown in grey link to obsolete records.
1RXS J123930.6+210815 AAVSO 1234+21 Downes IR Com
SDSS J123932.00+210806.2 SON 10932  
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Variability type
UG+E
Spectral type WD+M6-7
Mag. range
13.4 - 18.5 p
Discoverer --
Epoch
13 May 1994 (HJD 2449486.4819) Ephemeris
Outburst --
Period 0.08703862790 d  (2.088927070 h)
Rise/eclipse dur. --
Remarks
There are currently no remarks on file for this star. (Not logged in)  Add remark
References
Click reference title/citation to view in new window. Roll over index number to view submission details.
1 C.J. Manser, B.T. Gaensicke, 2014, arXiv:1401.5055 [astro-ph.SR] 2014arXiv1401.5055M
2 P. Szkody et al., 2011, arXiv:1109.6349v1 [astro-ph.SR] 2011arXiv1109.6349S
3 Light curve from CRTS/CSS (Drake et al. 2009, ApJ, 696, 870) 2009ApJ...696..870D
4 W.J. Feline et al., 2005, MNRAS 364, 1158 2005MNRAS.364.1158F
5 R.A. Downes et al., 2001, PASP 113, 764 (2006 archival version) 2005JAD....11....2D
6 R.A. Downes et al., 2001, PASP 113, 764 2001PASP..113..764D
7 G.A.Richter, J.Greiner, ApSS Library 205, 177, 1995. 1995ASSL..205..177R
External Links
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Location    Go   
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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 = 15.03H = 14.61K = 14.58J - K = 0.45
AllWISE W1 = 14.12W2 = 13.79W1 - W2 = 0.33
GALEX-DR5 FUV = 17.86NUV = 18.18FUV - NUV = -0.32
SDSS-DR12 u = 18.24g = 18.32r = 18.41i = 18.04z = 17.26u - g = -0.08r - i = 0.37
Images
Please review Digitized Sky Survey Acknowledgment and Copyright.
Size 5' x 5' (297 x 298 pixels)
Center 12 39 32.13 +21 08 06.4 (J2000)
Source STScI
Survey

Red, all sky, 1.0 arcsec/pixel
  Negative
Supporting Documents
There are currently no supporting documents on file for this star. (Not logged in)  Add document
Campaigns/Programs
 HST/COS CV program
 BAA VSS Recurrent Objects Programme
Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
4 Admin, VSX 2014-01-24 03:00 UTC Update from [2014arXiv1401.5055M].
3 Admin, VSX 2010-01-05 04:43 UTC Position updated from the GCVS version of November 2009.
2 Admin, VSX 2009-03-26 03:09 UTC Update from [2005MNRAS.364.1158F].
1 Admin, VSX 2005-12-18 01:33 UTC Initial upload.