Английская Википедия:49 Persei

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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

49 Persei is a star in the northern constellation of Perseus. It is just visible to the naked eye as a dim, orange-hued star with an apparent visual magnitude of 6.09.[1] Based upon parallax measurements, this star is located around Шаблон:Convert away from the Sun, but is drifting closer with a radial velocity of −44 km/s.[1] It has a relatively large proper motion, traversing the celestial sphere at a rate of Шаблон:Val·yr−1.[2]

This is an aging red giant star with a stellar classification of K1III, a star that has used up its core hydrogen and is expanding. It is a candidate horizontal branch star, which would indicate it is past the red giant branch stage and is fusing helium at its core.[3] The star is nearly four[4] billion years old with 1.4[4] times the mass of the Sun and 3.7[5] times the Sun's radius. It is radiating eight[5] times the luminosity of the Sun from its photosphere at an effective temperature of 5,028 K.[5]

References

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Шаблон:Stars of Perseus

  1. 1,0 1,1 Ошибка цитирования Неверный тег <ref>; для сносок Anderson2012 не указан текст
  2. Ошибка цитирования Неверный тег <ref>; для сносок Lépine2005 не указан текст
  3. Ошибка цитирования Неверный тег <ref>; для сносок Afșar2018 не указан текст
  4. 4,0 4,1 Ошибка цитирования Неверный тег <ref>; для сносок Earle2017 не указан текст
  5. 5,0 5,1 5,2 Ошибка цитирования Неверный тег <ref>; для сносок GaiaDR2 не указан текст