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Latest Details
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Name
  MY Cam  
AAVSO UID
000-BLL-194 (2994 observations)  
Constellation
Camelopardalis Sequence
J2000.0
03 59 18.29 +57 14 13.7  (59.82621 +57.23714) Search nearby
B1950.0 03 55 15.51 +57 05 42.2
Proper motion
RA: -0.147 +/- 0.995 mas/yDec: 1.656 +/- 0.752 mas/ySource: Gaia DR1
Galactic coord. 146.270 +3.140
Other names

(Internal only)
2MASS J03591829+5714137 ALS 7836 BD+56 864
Cl* Alicante 1 NM 693 GSC 03725-00498 Hilt 413
LS I +57 139 MCW 259 NSV 15852
TYC 3725-498-1    
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Variability type
EB
Spectral type O5.5V(n)+O6.5V(n)
Mag. range
9.68 V (0.28)R
Discoverer --
Epoch
22 Feb 2008 (HJD 2454518.715) Ephemeris
Outburst --
Period 1.1754514 d
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto B-V= 0.28. Very massive system. EW-type light curve. Candidate for a future binary merger.
2 GCVS Team VB. Var in UV.
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References
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1 J. Lorenzo; et al., 2014, MY Camelopardalis, a very massive merger
progenitor
arXiv:1410.5575
2 Maíz Apellániz, J.; Sota, A.; Arias, J. I.; et al., 2016, The Galactic
O-Star Spectroscopic Survey (GOSSS). III. 142 Additional O-type Systems.
2016ApJS..224....4M
3 E.V. Kazarovets, N.N. Samus, O.V. Durlevich, N.N. Kireeva, E.N. Pastukhova,
2008, IBVS 5863
2008IBVS.5863....1K
4 Greaves, J., Wils, P., Van Cauteren, P., 2004, IBVS 5517 2004IBVS.5517....1G
5 P.R.Wesselius, R.J.van Duinen, A.R.W.de Jonge, J.W.G.Aalders, W.Luinge,
K.J.Wildeman, AsAp Suppl 49, No.3, 427, 1982.
1982A&AS...49..427W
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 = 9.29H = 9.27K = 9.24J - K = 0.04
AllWISE W1 = 9.11W2 = 9.15W3 = 9.29W1 - W2 = -0.04
APASS-DR9 B = 10.01g' = 10.27
Images
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Supporting Documents
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Revision History
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6 Otero, Sebastian Alberto 2018-07-10 05:05 UTC Spectral type from 2016ApJS..224....4M.
5 Otero, Sebastian Alberto 2014-11-26 16:36 UTC Type, period, epoch, spectral type and amplitude from arXiv:1410.5575. Mean magnitude from the GCPD. Tycho-2 position.
4 Admin, VSX 2008-12-02 22:20 UTC Primary name changed to GCVS designation [2008IBVS.5863....1K]
3 Admin, VSX 2007-03-23 15:57 UTC Update from [2004IBVS.5517....1G].
2 Wils, Patrick 2006-05-21 10:52 UTC http://www.konkoly.hu/cgi-bin/IBVS?5517
  1 Admin, VSX 2005-12-17 20:33 UTC Initial database population.