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- Omicron2_Canis_Majoris abstract "Omicron2 Canis Majoris (ο² CMa, ο² Canis Majoris) is a star in the constellation Canis Major. Since 1943, the spectrum of this star has served as one of the stable anchor points by which other stars are classified. It has an apparent visual magnitude of 3.043, making it one of the brighter members of the constellation. The distance to this star is roughly 2,800 light years (800 parsecs), with a 34% margin of error.This is a massive supergiant star with a stellar classification of B3 Ia, indicating that, at the age of around 7 million years, it has exhausted the supply of hydrogen at its core and is now undergoing nuclear fusion of helium to generate energy. It has about 21 times the mass of the Sun and 65 times the Sun's radius. In all likelihood, it will end its life as a Type II supernova.Omicron2 Canis Majoris is one of the most luminous stars known, as it radiates about 220,000 times as much luminosity as the Sun from its outer envelope at a temperature of 15,500 K. At this heat, the star is glowing with the blue-white hue of a B-type star. This star is classified as an Alpha Cygni-type variable star that undergoes periodic non-radial pulsations, which cause its brightness to cycle from magnitude +2.93 to +3.08 over a 24.44 day interval. It is losing mass from its stellar wind at the rate of around 2 × 10–9 times the mass of the Sun per year, or the equivalent of the Sun's mass every 500 million years.While this star lies in the field of view of the open cluster named Collinder 121, it is unlikely to be a member. In fact, its optical neighbor, ο1 Canis Majoris has a much higher likelihood of 23.1% based upon its proper motion being a closer match to the motion of the cluster. Although they are located near each other on the celestial sphere, ο1 CMa and ο2 CMa are most likely not gravitationally bound to each other as they appear to lie many light years apart.".
- Omicron2_Canis_Majoris thumbnail Canis_Major_IAU.svg?width=300.
- Omicron2_Canis_Majoris wikiPageID "2922241".
- Omicron2_Canis_Majoris wikiPageRevisionID "601563542".
- Omicron2_Canis_Majoris absmagV "–7.3".
- Omicron2_Canis_Majoris appmagV "3.043".
- Omicron2_Canis_Majoris bV "–0.107".
- Omicron2_Canis_Majoris class "B3 Ia".
- Omicron2_Canis_Majoris constell Canis_Major.
- Omicron2_Canis_Majoris epoch "J2000".
- Omicron2_Canis_Majoris gravity "2.05".
- Omicron2_Canis_Majoris hasPhotoCollection Omicron2_Canis_Majoris.
- Omicron2_Canis_Majoris luminosity "220000".
- Omicron2_Canis_Majoris pError "0.4".
- Omicron2_Canis_Majoris parallax "1.18".
- Omicron2_Canis_Majoris propMoDec "+3.61".
- Omicron2_Canis_Majoris propMoRa "–2.21".
- Omicron2_Canis_Majoris radialV "48.4".
- Omicron2_Canis_Majoris radius "65".
- Omicron2_Canis_Majoris rotationalVelocity "58".
- Omicron2_Canis_Majoris temperature "15500".
- Omicron2_Canis_Majoris uB "–0.778".
- Omicron2_Canis_Majoris variable Alpha_Cygni_variable.
- Omicron2_Canis_Majoris subject Category:Alpha_Cygni_variables.
- Omicron2_Canis_Majoris subject Category:B-type_supergiants.
- Omicron2_Canis_Majoris subject Category:Bayer_objects.
- Omicron2_Canis_Majoris subject Category:Canis_Major_(constellation).
- Omicron2_Canis_Majoris type CelestialBody.
- Omicron2_Canis_Majoris type Star.
- Omicron2_Canis_Majoris type PhysicalBody.
- Omicron2_Canis_Majoris comment "Omicron2 Canis Majoris (ο² CMa, ο² Canis Majoris) is a star in the constellation Canis Major. Since 1943, the spectrum of this star has served as one of the stable anchor points by which other stars are classified. It has an apparent visual magnitude of 3.043, making it one of the brighter members of the constellation.".
- Omicron2_Canis_Majoris label "Omicron2 Canis Majoris".
- Omicron2_Canis_Majoris label "Omicron2 Canis Majoris".
- Omicron2_Canis_Majoris label "Omicron2 Canis Majoris".
- Omicron2_Canis_Majoris label "Omicron2 Canis Majoris".
- Omicron2_Canis_Majoris label "Omikron² Canis Majoris".
- Omicron2_Canis_Majoris label "Ómicron2 Canis Majoris".
- Omicron2_Canis_Majoris label "おおいぬ座オミクロン2星".
- Omicron2_Canis_Majoris sameAs Ómicron2_Canis_Majoris.
- Omicron2_Canis_Majoris sameAs Omicron2_Canis_Majoris.
- Omicron2_Canis_Majoris sameAs Omicron2_Canis_Majoris.
- Omicron2_Canis_Majoris sameAs おおいぬ座オミクロン2星.
- Omicron2_Canis_Majoris sameAs Omikron²_Canis_Majoris.
- Omicron2_Canis_Majoris sameAs Omicron2_Canis_Majoris.
- Omicron2_Canis_Majoris sameAs m.08cv6s.
- Omicron2_Canis_Majoris sameAs Q2716216.
- Omicron2_Canis_Majoris sameAs Q2716216.
- Omicron2_Canis_Majoris wasDerivedFrom Omicron2_Canis_Majoris?oldid=601563542.
- Omicron2_Canis_Majoris depiction Canis_Major_IAU.svg.
- Omicron2_Canis_Majoris isPrimaryTopicOf Omicron2_Canis_Majoris.
- Omicron2_Canis_Majoris name "ο² Canis Majoris".