Omega CMa
HIP 35037; Omega CMa; 28 CMa
Star
CMa
Visible
Level 1
Naked eye / Binoculars
Physical Properties
Magnitude
3.85
Variable Type
Gamma Cassiopeiae (Eruptive Be Star)
Spectral Type
B2.5Ve
Star Color
Blue
(B-V -0.17)
Distance
908.6 ly
Position & Identifiers
RA
07h 14m 48.7s
Dec
-26° 46' 22.0"
Constellation
CMa
HR
2749
HIP
35037
Bayer
Omega
Flamsteed
28 CMa
Variable ID
Ome CMa
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Size Comparison
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Stellar Lifecycle
Spectral Classification
Hertzsprung-Russell Diagram
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Blackbody Spectrum
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
Stellar Notes
Gamma Cas 3.60 - 4.18V, cycles 20 - 22 hrs. Also amp. 0.06V on time scale of 5d reported. Hydrogen emission varies | with period 1.3667d (possibly a rotation period).
+22 to -10k/s change in 0.2d. Expanding circumstellar shell. Pole on. 1.36d period.
Survey Image
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