Английская Википедия:HD 199942

Материал из Онлайн справочника
Перейти к навигацииПерейти к поиску

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

HD 199942 is a binary star system in the northern constellation of Equuleus. It is faintly visible to the naked eye with an apparent visual magnitude of 5.98.[1] The system is located at a distance of approximately 184 light years based on parallax, and it has an absolute magnitude of 1.59.[1] It is drifting closer with a radial velocity of −26 km/s.[1]

This system is moving through the galaxy at a velocity of Шаблон:Val relative to the Sun. Its galactic orbit carry it somewhere between 25100-22000 light years from the galactic core, and it'll come at its closest to the Sun 2.1 million years from now, at a distance of Шаблон:Convert.[1]

The binary nature of this system was discovered in 1934 by G. P. Kuiper, who found the pair had an angular separation of Шаблон:Val.[2] The pair orbit each other with a period of 58.4 years and an eccentricity of 0.295.[3] The primary component is of visual magnitude 6.23 and is a chemically-peculiar F-type main-sequence star with a class of F1Vp.[2] The companion is of magnitude 8.13.[2]

References

Шаблон:Reflist

Шаблон:Stars of Equuleus

  1. 1,0 1,1 1,2 1,3 Ошибка цитирования Неверный тег <ref>; для сносок Anderson2012 не указан текст
  2. 2,0 2,1 2,2 Ошибка цитирования Неверный тег <ref>; для сносок Mason2014 не указан текст
  3. Ошибка цитирования Неверный тег <ref>; для сносок Hartkopf2006 не указан текст