Английская Википедия:54 Cancri

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

54 Cancri is a star in the zodiac constellation of Cancer. It has an apparent visual magnitude of 6.38,[1] which places it just below the normal brightness limit of stars visible to the naked eye. The annual parallax shift is 24.79 mas as measured from Earth's orbit, which yields a distance estimate of about 132 light years. It is moving away from the Sun with a radial velocity of +45 km/s.[1]

Measurement of the stars proper motion over time suggest changes due to an acceleration component, which may indicate it is a close binary system.[2] The visible component has a stellar classification of G5 V,[3] indicating it is an ordinary G-type main-sequence star that is generating energy through hydrogen fusion in its core region. Hall et al. (2007) classify it as a low-activity variable star.[3] The star is about five billion years old with a projected rotational velocity of 3.1 km/s. It has 1.23 times the mass of the Sun and 1.81 times the Sun's radius.[1]

References

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Шаблон:Stars of Cancer

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  3. 3,0 3,1 Ошибка цитирования Неверный тег <ref>; для сносок Hall2007 не указан текст