ST Большой Медведицы

ST Большой Медведицы
Звезда
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Наблюдательные данные
(Эпоха J2000.0)
Прямое восхождение 11ч 27м 50,38с[1]
Склонение +45° 11′ 6,75″[1]
Расстояние 255,9574 ± 14,5442 пк[1]
Видимая звёздная величина (V) 6,28 ± 0,009[2]
Созвездие Большая Медведица
Астрометрия
Лучевая скорость (Rv) −19,75 ± 0,63 км/с[3] и −20,36 км/с[3]
Собственное движение
 • прямое восхождение −10,021 ± 0,246 mas/год[1]
 • склонение −15,994 ± 0,279 mas/год[1]
Параллакс (π) 3,9069 ± 0,222 mas[1]
Спектральные характеристики
Спектральный класс M4IIIvar[4]
Показатель цвета
 • B−V 1,68
 • U−B 1,7
Переменность SRB полуправильная[5]
Коды в каталогах

DO 33697, GCRV 6981, GSC 03451-00097, HD 99592, HIC 55936, HIP 55936, IRAS 11251+4527, IRC +50211, 2MASS J11275039+4511068, PMC 90-93 4888, PPM 52437, RAFGL 1489, SAO 43748, AG+45 949, BD+45 1924, TYC 3451-97-1, WEB 10043, Gaia DR2 784579822198772352, ST UMa, AAVSO 1122+45, AN 42.1907, GC 15723, GEN# +1.00099592, SKY# 21758 и SV* HV 2899

Информация в базах данных
SIMBAD V* ST UMa
Логотип Викиданных Информация в Викиданных ?

ST Большой Медведицы (лат. ST Ursae Majoris), HD 99592 — одиночная переменная звезда в созвездии Большой Медведицы на расстоянии приблизительно 835 световых лет (около 256 парсеков) от Солнца. Видимая звёздная величина звезды — от +7,6m до +6m[6].

Характеристики

ST Большой Медведицы — красный гигант, пульсирующая полуправильная переменная звезда типа SRB (SRB) спектрального класса M4-M5III[6] или M4IIIvar[4].

Примечания

  1. ↑ 1 2 3 4 5 6 Gaia Data Release 2 (англ.) / Data Processing and Analysis Consortium, European Space Agency — 2018.
  2. ↑ Oja T. UBV photometry of stars whose positions are accurately known. III (англ.) // Astronomy and Astrophysics / T. Forveille — EDP Sciences, 1986. — Vol. 65. — P. 405–409. — ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846
  3. ↑ 1 2 Famaey B., Pourbaix D., Frankowski A., Eck S. V., Mayor M., Udry S., Jorissen A. Spectroscopic binaries among Hipparcos M giants'. I. Data, orbits, and intrinsic variations (англ.) // Astronomy and Astrophysics / T. Forveille — EDP Sciences, 2009. — Vol. 498, Iss. 2. — P. 627–640. — ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846 — doi:10.1051/0004-6361/200810698 — arXiv:0901.0934
  4. ↑ 1 2 Keenan P. C. Luminosities of the M-type variables of small range (англ.) // The Astrophysical Journal Letters — United Kingdom: IOP Publishing, 1942. — Vol. 95. — P. 461–467. — ISSN 2041-8205; 2041-8213 — doi:10.1086/144418
  5. ↑ Samus N. N., Durlevich O. V., et a. General Catalogue of Variable Stars (Samus+ 2007-2011) — 2009. — Т. 1. — С. 2025.
  6. ↑ 1 2 ST UMa, 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 2020-08-08.

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