RR Водолея

RR Водолея
Звезда
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Наблюдательные данные
(Эпоха J2000.0)
Прямое восхождение 21ч 15м 1,32с[1]
Склонение −2° 53′ 44,95″[1]
Видимая звёздная величина (V) 9,1[2]
Созвездие Водолей
Астрометрия
Лучевая скорость (Rv) −202,58 км/с[3]
Собственное движение
 • прямое восхождение 12,739 ± 0,055 mas/год[1]
 • склонение −7,826 ± 0,044 mas/год[1]
Параллакс (π) 0,2781 ± 0,0508 mas[1]
Спектральные характеристики
Спектральный класс M1/3e[4]
Переменность долгопериодическая[5]
Коды в каталогах

GCRV 13352, HD 202306, IRAS 21124-0306, PPM 204983, ASAS J211501-0253.8, 2MASS J21150130-0253449, WEB 19072, Gaia DR2 2685366626095005440, RR Aqr, AAVSO 2109-03, TIC 248555523 и Gaia DR3 2685366626095005440

Информация в базах данных
SIMBAD V* RR Aqr
Логотип Викиданных Информация в Викиданных ?

RR Водолея (лат. RR Aquarii), HD 202306 — одиночная переменная звезда в созвездии Водолея на расстоянии (вычисленном из значения параллакса) приблизительно 11116 световых лет (около 2408 парсеков) от Солнца. Видимая звёздная величина звезды — от +14,7m до +9,1m[6].

Характеристики

RR Водолея — красная пульсирующая переменная звезда, мирида (M) спектрального класса M2e-M4e[6] или M1/3e[4]. Эффективная температура — около 3295 К[7].

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. ↑ Guo, Y. -X., Luo, A. -L., Zhang S., Du B., Wang, Y. -F., Chen, J. -J., Zuo F., Kong X., Hou, Y. -H. Recognition of M-type stars in the unclassified spectra of LAMOST DR5 using a hash-learning method (англ.) // Monthly Notices of the Royal Astronomical Society / D. Flower — OUP, 2019. — Vol. 485, Iss. 2. — P. 2167–2178. — 12 p. — ISSN 0035-8711; 1365-2966 — doi:10.1093/MNRAS/STZ458 — arXiv:1902.03496
  4. ↑ 1 2 Houk N., Swift C. Michigan catalogue of two-dimensional spectral types for the HD Stars (англ.) — 1999. — Vol. 5.
  5. ↑ Vogt N., Contreras-Quijada A., Fuentes-Morales I., Vogt-Geisse S., Arcos C., Abarca C., Agurto-Gangas C., Caviedes M., DaSilva H., Flores J. et al. Determination of pulsation periods and other parameters of 2875 stars classified as Mira in the All Sky Automated Survey (ASAS) (англ.) // The Astrophysical Journal: Supplement Series — AAS, 2016. — Vol. 227, Iss. 1. — 13 p. — ISSN 0067-0049; 1538-4365 — doi:10.3847/0067-0049/227/1/6 — arXiv:1609.05246
  6. ↑ 1 2 RR Aqr Архивная копия от 9 октября 2020 на Wayback Machine, 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 2020-10-05.
  7. ↑ Gaia Data Release 2 (англ.) / Data Processing and Analysis Consortium, European Space Agency — 2018.

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