HD 21278
HD 21278 is a binary star system in the constellation Perseus, located within the 60±7 million year old Alpha Persei Cluster. It has a blue-white hue and is visible to the naked eye with a combined apparent visual magnitude of 4.99. The system is located at a distance of approximately 580 light years from the Sun based on parallax, and it is drifting further away with a radial velocity of +1.20 km/s. The binary nature of this star was announced in 1925 by Otto Struve. It is a double-lined spectroscopic binary with an orbital period of 21.7 days and an eccentricity of 0.12.
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HD 21278
HD 21278 is a binary star system in the constellation Perseus, located within the 60±7 million year old Alpha Persei Cluster. It has a blue-white hue and is visible to the naked eye with a combined apparent visual magnitude of 4.99. The system is located at a distance of approximately 580 light years from the Sun based on parallax, and it is drifting further away with a radial velocity of +1.20 km/s. The binary nature of this star was announced in 1925 by Otto Struve. It is a double-lined spectroscopic binary with an orbital period of 21.7 days and an eccentricity of 0.12.
has abstract
HD 21278 is a binary star syst ...... ctive temperature of 15,274 K.
@en
HD 21278，又名BD+48 920，SAO 38849 ...... h 20m 56.3s，赤緯+48° -6.19′ 51″。
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absmag v
−1.49
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age myr
appmag v
b-v
−0.10
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class
B5V
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component
A
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constell
epoch
J2000
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luminosity
mass
p error
parallax
prop mo dec
−26.036
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prop mo ra
+21.784
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radial v
+1.20
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radius
rotational velocity
u-b
−0.56
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wikiPageUsesTemplate
subject
hypernym
comment
HD 21278 is a binary star syst ...... s and an eccentricity of 0.12.
@en
HD 21278，又名BD+48 920，SAO 38849 ...... h 20m 56.3s，赤緯+48° -6.19′ 51″。
@zh
label
HD 21278
@en
HD 21278
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