HO Большого Пса

HO Большого Пса
Звезда
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Наблюдательные данные
(Эпоха J2000.0)
Прямое восхождение 7ч 13м 13,07с[1]
Склонение −30° 57′ 59,09″[1]
Расстояние 609,607 ± 12,7466 пк[1]
Видимая звёздная величина (V) 7,84 ± 0,01[4]
Созвездие Большой Пёс
Астрометрия
Собственное движение
 • прямое восхождение −4,306 ± 0,031 mas/год[1]
 • склонение 3,832 ± 0,035 mas/год[1]
Параллакс (π) 1,6404 ± 0,0343 mas[1]
Спектральные характеристики
Спектральный класс B5V[5]
Показатель цвета
 • B−V −0,08
Информация в базах данных
SIMBAD HD 55817
Звёздная система
У звезды существует несколько компонентов
Их параметры представлены ниже:
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HO Большого Пса (лат. HO Canis Majoris), HD 55817 — двойная звезда в созвездии Большого Пса на расстоянии (вычисленном из значения параллакса) приблизительно 2038 световых лет (около 625 парсеков) от Солнца. Видимая звёздная величина звезды — +7,73m[6]. Ранее считалась переменной звездой, но дальнейшие наблюдения переменности не подтвердили[6].

Характеристики

Первый компонент — бело-голубая звезда спектрального класса B5V[6][5].

Примечания

  1. 1 2 3 4 5 6 Gaia Early Data Release 3 (англ.) / Data Processing and Analysis Consortium, European Space Agency — 2020.
  2. Høg E., Fabricius C., Makarov V. V., Urban S., Corbin T., Wycoff G., Bastian U., Schwekendiek P., Wicenec A. The Tycho-2 catalogue of the 2.5 million brightest stars (англ.) // Astronomy and Astrophysics / T. ForveilleEDP Sciences, 2000. — Vol. 355. — P. L27—L30. — ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846
  3. SIMBAD Astronomical Database
  4. Fabricius C., Høg E., Makarov V. V., Mason B. D., Wycoff G. L., Urban S. E. The Tycho double star catalogue (англ.) // Astronomy and Astrophysics / T. ForveilleEDP Sciences, 2002. — Vol. 384, Iss. 1. — P. 180–189. — ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846doi:10.1051/0004-6361:20011822
  5. 1 2 Houk N. Catalogue of two-dimensional spectral types for the HD stars, Vol. 3 — 1982. — Т. 3. — С. 0.
  6. 1 2 3 HO CMa, database entry, Combined General Catalog of Variable Stars (GCVS5.1, 2017 Ed.), N. N. Samus, O. V. Durlevich, et al., CDS ID II/250 Архивная копия от 6 августа 2012 на Wayback Machine Accessed online 2020-08-28.

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