Lambda Canis Majoris
Lambda Canis Majoris is a solitary,[8] blue-white hued star in the constellation Canis Major. Its name is a Bayer designation that is Latinized from λ Canis Majoris, and abbreviated Lambda CMa or λ CMa. This star is visible to the naked eye with an apparent visual magnitude of +4.48.[2] Based upon an annual parallax shift of 7.41 mas as seen from Earth,[1] it is located about 440 light-years (135 pc) away from the Sun. At that distance, the visual magnitude is diminished by an extinction of 0.14 due to interstellar dust.[5] It is receding from the Sun with a line of sight velocity of +41 km/s.[4] This is a B-type main-sequence star with a stellar classification of B4 V.[3] The star is roughly 40 million years old,[6] and has a high rate of spin with a projected rotational velocity of 102 km/s.[3] It has about 5 times the mass of the Sun and 4.3 times the Sun's radius. The star is radiating 824 times the Sun's luminosity at an effective temperature of 15,481 K.[1] References
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