Omicron¹ Canis Majoris

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For other star systems with this Bayer designation, see Omicron Canis Majoris.
ο1 Canis Majoris
Observation data
Epoch J2000.0
Constellation
(pronunciation)
Canis Major
Right ascension 06h54m07.9s
Declination −24°11′02″
Apparent magnitude (V) +3.89
Distance 1980 ± 740 ly
(610 ± 230 pc)
Spectral type K2+Iab
Other designations
16 Canis Majoris, HR 2580, HD 50877, CD-24°4567, HIP 33152, SAO 172542, GC 9059

Omicron1 Canis Majoris (ο1 CMa / ο1 Canis Majoris) is a star in the constellation Canis Major.

ο1 Canis Majoris is an orange K-type supergiant with a mean apparent magnitude of +3.89. It is approximately 1980 light years from Earth. It is classified as an irregular variable star and its brightness varies from magnitude +3.78 to +3.99.