HD 2942

HD 2942
Звезда
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Наблюдательные данные
(Эпоха J2000.0)
Прямое восхождение 0ч 32м 49,09с[1]
Склонение +28° 16′ 48,87″[1]
Расстояние 170,3868 ± 1,26 пк[1]
Видимая звёздная величина (V) 6,33[2]
Созвездие Андромеда
Астрометрия
Лучевая скорость (Rv) −10,5 ± 0,14 км/с[1]
Собственное движение
 • прямое восхождение −5,695 ± 0,072 mas/год[1]
 • склонение 6,101 ± 0,039 mas/год[1]
Параллакс (π) 5,869 ± 0,0434 mas[1]
Абсолютная звёздная величина (V) 0,26
Спектральные характеристики
Спектральный класс G8III[3]
Показатель цвета
 • B−V 0,99
 • U−B 0,8
Физические характеристики
Масса 3,17 M☉
Радиус 10,23 R☉
Светимость 90,6 L☉
Информация в базах данных
SIMBAD HD 2942
Логотип Викиданных Информация в Викиданных ?

HD 2942 — звезда, жёлтый гигант, находящийся в созвездии Андромеда на расстоянии приблизительно 555,74 св. лет от Земли. Является двойной или кратной звездой. По состоянию на 2007 год, радиус звезды оценивается в 10,23 солнечного радиуса. Исходя из отрицательной радиальной скорости, звезда приближается к Солнцу. Планет у HD 2942 обнаружено не было. Звезда видима невооружённым глазом на ночном небе[4].

Примечания

  1. 1 2 3 4 5 6 7 Gaia Data Release 2 (англ.) / Data Processing and Analysis Consortium, European Space Agency — 2018.
  2. Ducati J. R. Catalogue of Stellar Photometry in Johnson's 11-color system (англ.) — 2002. — Vol. 2237.
  3. Abt H. A. Visual multiples. VIII - 1000 MK types (англ.) // The Astrophysical Journal: Supplement SeriesAAS, 1985. — Vol. 59. — P. 95–112. — ISSN 0067-0049; 1538-4365doi:10.1086/191064
  4. HD 2942 Facts (Type, Distance, Magnitude, Colour, Luminosity, Location & more). Universe Guide. Дата обращения: 29 декабря 2021. Архивировано 23 ноября 2021 года.

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