Английская Википедия:78 Pegasi

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

78 Pegasi is a binary star system in the northern constellation of Pegasus. It is visible to the naked eye as a faint, orange-hued point of light with an apparent visual magnitude of 4.93.[1] The system is located approximately 224 light years from the Sun based on parallax,[2] but is drifting closer with a radial velocity of −8 km/s.[3] The double-star nature of this system was discovered by A. G. Clark in 1862. The components of this system orbit each other over a 630-year period with an eccentricity of 0.11.[4]

The primary member, designated component A, is a magnitude 5.07[5] giant star with a stellar classification of K0III,[6] having exhausted the supply of hydrogen at its core and expanded to 10[7] times the Sun's radius. It is a red clump giant,[8] which indicates it is on the horizontal branch and is generating energy through core helium fusion. It has 1.5[7] times the mass of the Sun and is radiating 57[1] times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,898 K.[7] The secondary companion, component B, is magnitude 8.10.[5]

References

Шаблон:Reflist

Шаблон:Stars of Pegasus

  1. 1,0 1,1 Ошибка цитирования Неверный тег <ref>; для сносок XHIP не указан текст
  2. Ошибка цитирования Неверный тег <ref>; для сносок vanLeeuwen2007 не указан текст
  3. Ошибка цитирования Неверный тег <ref>; для сносок Massarotti2008 не указан текст
  4. Шаблон:Cite journal Vizier catalog entry
  5. 5,0 5,1 Ошибка цитирования Неверный тег <ref>; для сносок ORB6 не указан текст
  6. Ошибка цитирования Неверный тег <ref>; для сносок Hoffleit1991 не указан текст
  7. 7,0 7,1 7,2 Ошибка цитирования Неверный тег <ref>; для сносок AllendePrieto не указан текст
  8. Шаблон:Citation