Y Большого Пса

Y Большого Пса
Звезда
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Наблюдательные данные
(Эпоха J2000.0)
Прямое восхождение 7ч 04м 12,84с[1]
Склонение −16° 35′ 35,19″[1]
Видимая звёздная величина (V) 15[2]
Созвездие Большой Пёс
Астрометрия
Собственное движение
 • прямое восхождение −2,478 ± 0,11 mas/год[1]
 • склонение −3,287 ± 0,094 mas/год[1]
Параллакс (π) 0,7465 ± 0,1217 mas[1]
Спектральные характеристики
Спектральный класс M8[3]
Переменность мирида[4][5][…]
Коды в каталогах
IRAS 07019-1631, IRC -20117, 2MASS J07041284-1635352, Gaia DR2 2935492125421409152, Y CMa, TIC 148240186 и Gaia DR3 2935492125421409152
Информация в базах данных
SIMBAD V* Y CMa
Логотип Викиданных Информация в Викиданных ?

Y Большого Пса (лат. Y Canis Majoris) — одиночная переменная звезда в созвездии Большого Пса на расстоянии (вычисленном из значения параллакса) приблизительно 3263 световых лет (около 1000 парсеков) от Солнца. Видимая звёздная величина звезды — от более +13m до +10,7m[6].

Характеристики

Y Большого Пса — красная пульсирующая переменная звезда, мирида (M) спектрального класса M8e:[6][3].

Примечания

  1. ↑ 1 2 3 4 5 Gaia Early Data Release 3 (англ.) / Data Processing and Analysis Consortium, European Space Agency — 2020.
  2. ↑ Hansen O. L., Blanco V. M. Classification of 831 Two-Micron Sky Survey (англ.) // The Astronomical Journal / J. G. III, E. Vishniac — New York City: IOP Publishing, AAS, University of Chicago Press, AIP, 1975. — Vol. 80. — P. 1011–1025. — ISSN 0004-6256; 1538-3881 — doi:10.1086/111833
  3. ↑ 1 2 McCONNELL D. J. IRAS Point Sources of flux at 12 microns greater than flux at 25 microns and falling within about 7 degrees of the Galactic Plane — 1993.
  4. ↑ Kukarkin B. V., Kholopov P. N., Pskovsky Y. P., Efremov Y. N., Kukarkina N. P., Kurochkin N. E., Medvedeva G. I. General Catalogue of Variable Stars, 3rd ed. — 1971.
  5. ↑ Jayasinghe T., Stanek K. Z., Kochanek C. S., Shappee B. J., Holoien, T. W. -S., Thompson T. A., Prieto J. L., Dong S., Pawlak M., Pejcha O. et al. The ASAS-SN catalogue of variable stars - II. Uniform classification of 412 000 known variables (англ.) // Monthly Notices of the Royal Astronomical Society / D. Flower — OUP, 2019. — Vol. 486, Iss. 2. — P. 1907—1943. — 37 p. — ISSN 0035-8711; 1365-2966 — doi:10.1093/MNRAS/STZ844 — arXiv:1809.07329
  6. ↑ 1 2 Y 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 1 июля 2015 на Wayback Machine Accessed online 2020-08-19.

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