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Latest Details
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Name
  W Com  
AAVSO UID
000-BCV-492 (4837 observations)  
Constellation
Coma Berenices Sequence
J2000.0
12 21 31.67 +28 13 57.8  (185.38196 +28.23272) Search nearby
B1950.0 12 19 01.14 +28 30 36.3
Proper motion
RA: -2.8 +/- 6.3 mas/yDec: -3.4 +/- 10.1 mas/ySource: UCAC4
Galactic coord. 201.737 +83.288
Other names

(Internal only)
1RXS J122131.1+281402 AAVSO 1216+28 AN 10.1916
ASASSN-V J122131.69+281358.5 LINEAR 3472523  
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Variability type
BLLAC
Spectral type cont
Mag. range
11.5 - 17.5 B
Discoverer Maximilian Wolf (1916)
Epoch
--
Outburst --
Period --
Rise/eclipse dur. --
Remarks
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1 GCVS Team Radio source ON 231.
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References
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1 L. Palaversa, Z. Ivezic, L. Eyer et al., 2013, arXiv:1308.0357
[astro-ph.GA]
2013arXiv1308.0357P
2 P.Veron, M.P.Veron, AsAp 39, 281, 1975. 1975A&A....39..281V
3 D.Hoffleit, IBVS N800, 1973. 1973IBVS..800....1H
4 Hartwig, E.; Kempf, P.; Muller, G., 1919, Benennung von neu entdeckten
veraenderlichen Sternen
1919AN....208...57.
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 = 12.48H = 11.74K = 10.97J - K = 1.51
AllWISE W1 = 10.66W2 = 9.79W3 = 7.48W4 = 5.47W1 - W2 = 0.87W3 - W4 = 2.01
GALEX-DR5 FUV = 17.19NUV = 16.42FUV - NUV = 0.77
SDSS-DR12 u = 15.84g = 15.38r = 15.04i = 14.77z = 14.57u - g = 0.46r - i = 0.28
Images
Please review Digitized Sky Survey Acknowledgment and Copyright.
Size 5' x 5' (297 x 298 pixels)
Center 12 21 31.67 +28 13 57.8 (J2000)
Source STScI
Survey

Red, all sky, 1.0 arcsec/pixel
  Negative
Supporting Documents
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Campaigns/Programs
 VERITAS/XMM TOO Blazars
Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
3 Fernig, Leo 2023-03-29 20:21 UTC Discoverer updated from 1919AN....208...57. page 64.
2 Admin, VSX 2010-01-05 04:43 UTC Position updated from the GCVS version of November 2009.
1 Admin, VSX 2005-12-18 01:33 UTC Initial upload.