Английская Википедия:28 Cancri

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Шаблон:Short description Шаблон:Starbox begin Шаблон:Starbox image Шаблон:Starbox observe Шаблон:Starbox character Шаблон:Starbox astrometry Шаблон:Starbox detail Шаблон:Starbox catalog Шаблон:Starbox reference Шаблон:Starbox end

28 Cancri is a star system in the zodiac constellation of Cancer. It is a variable star with the designation CX Cancri, and is close to the lower limit of visibility with the naked eye, having a mean apparent visual magnitude of 6.05.[1] The annual parallax shift seen from Earth's orbit is Шаблон:Val, which provides a distance estimate of about 384 light years. It is moving away from the Sun with a radial velocity of around +9 km/s.[2]

Based upon proper motion variation, this is an astrometric binary system with high likelihood (99.8%).[3] The visible component has a stellar classification of F0 Vn,[4] indicating it is a F-type main-sequence star with "nebulous" lines due to rapid rotation. It is a Delta Scuti variable star with a period of 0.0960 days and an amplitude of 0.020 in magnitude.[5] With 2.4 times the mass of the Sun it is spinning with a high projected rotational velocity of 133 km/s. 28 Cancri is radiating roughly 44 times the Sun's luminosity from its photosphere at an effective temperature of around 7,516 K.

References

Шаблон:Reflist

Шаблон:Stars of Cancer

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