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Омикрон¹ Большого Пса

Омикрон¹ Большого Пса
Звезда
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Наблюдательные данные
(Эпоха J2000.0)
Прямое восхождение 6ч 54м 7,95с[1]
Склонение −24° 11′ 3,16″[1]
Расстояние 1286 световых лет
Видимая звёздная величина (V) 3,87[2]
Созвездие Большой Пёс
Астрометрия
Лучевая скорость (Rv) 34,52 ± 1,66 км/с[3]
Собственное движение
 • прямое восхождение −3,771 ± 0,076 mas/год[1]
 • склонение 4,066 ± 0,106 mas/год[1]
Параллакс (π) 1,2869 ± 0,1209 mas[1]
Абсолютная звёздная величина (V) −4,69
Спектральные характеристики
Спектральный класс K2,5Iab
Показатель цвета
 • B−V 1,73
 • U−B 1,99
Переменность неправильная переменная и медленная неправильная
Физические характеристики
Масса 7,83 M⊙
Радиус 212 R⊙
Возраст 18 млн лет
Температура 4015 K
Светимость 10 425 L⊙
Металличность 0,13[4]
Вращение < 19 км/с[5]
Часть от [KPS2012] MWSC 1018[вд][6]
Коды в каталогах

2MASS J06540794-2411031, GSC 06522-03271, HD 50877, HIP 33152, HR 2580, IRAS 06520-2407, SAO 172542, PLX 1621, CSV 100781, GC 9059, GCRV 4521, HIC 33152, IRC -20112, JP11 4531, PPM 251217, RAFGL 1035, ROT 1115, TYC 6522-3271-1, UBV 6839, omi01 CMa, YZ 114 4154, PLX 1621.00, uvby98 511210001, WEB 6668, Gaia DR2 2921973698674341504, ο¹ CMa, 16 CMa, Gaia DR3 2921973698674974592, TIC 53745318 и UBV M 40622

Информация в базах данных
SIMBAD * omi01 CMa
Логотип Викиданных Информация в Викиданных ?

Омикрон¹ Большого Пса (лат. ο¹ Canis Majoris), 16 Большого Пса (лат. 16 Canis Majoris), HD 50877 — одиночная переменная звезда в созвездии Большого Пса на расстоянии (вычисленном из значения параллакса) приблизительно 1286 световых лет (около 394 парсеков) от Солнца. Видимая звёздная величина звезды — от +4,2m до +3,94m[7]. Возраст звезды оценивается как около 18 млн лет.

Характеристики

Омикрон¹ Большого Пса — оранжевый сверхгигант, пульсирующая медленная неправильная переменная звезда (LC) спектрального класса K3Iab[7] или K2,5Iab[8]. Масса — около 7,83 солнечных, радиус — около 212 солнечных, светимость — около 10425 солнечных. Эффективная температура — около 4015 К[9].

Примечания

  1. ↑ 1 2 3 4 5 Gaia Early Data Release 3 (англ.) / Data Processing and Analysis Consortium, European Space Agency — 2020.
  2. ↑ Ducati J. R. Catalogue of Stellar Photometry in Johnson's 11-color system (англ.) — 2002. — Vol. 2237.
  3. ↑ Mermilliod J. C., Mayor M., Udry S. Red giants in open clusters (англ.) // Astronomy and Astrophysics / T. Forveille — EDP Sciences, 2008. — Vol. 485, Iss. 1. — P. 303–314. — ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846 — doi:10.1051/0004-6361:200809664
  4. ↑ Arentsen A., Prugniel P., Gonneau A., Lançon A., Trager S., Peletier R., Lyubenova M., Chen Y., Falcón Barroso J., Sánchez Blázquez P. et al. Stellar atmospheric parameters for 754 spectra from the X-shooter Spectral Library (англ.) // Astronomy and Astrophysics / T. Forveille — EDP Sciences, 2019. — Vol. 627. — 14 p. — ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846 — doi:10.1051/0004-6361/201834273 — arXiv:1907.06391
  5. ↑ Uesugi A., Fukuda I. Catalogue of rotational velocities of the stars (англ.) — 1970. — Vol. 189.
  6. ↑ SIMBAD Astronomical Database
  7. ↑ 1 2 omi 1 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 2020-08-19.
  8. ↑ Levesque E. M., Massey P., Olsen K. A. G., Josselin E., Maeder A., Meynet G. The Effective Temperature Scale of Galactic Red Supergiants: Cool, but Not as Cool as We Thought (англ.) // The Astrophysical Journal / E. Vishniac — IOP Publishing, 2005. — Vol. 628, Iss. 2. — P. 973–985. — ISSN 0004-637X; 1538-4357 — doi:10.1086/430901 — arXiv:astro-ph/0504337
  9. ↑ Messineo M., Brown A. G. A. A catalog of known Galactic K-M stars of class I candidate red supergiants in Gaia DR2 (англ.) // The Astronomical Journal / J. G. III, E. Vishniac — New York City: IOP Publishing, AAS, University of Chicago Press, AIP, 2019. — Vol. 158. — P. 20–20. — ISSN 0004-6256; 1538-3881 — doi:10.3847/1538-3881/AB1CBD — arXiv:1905.03744

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