39 Рака

39 Рака
Звезда
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Наблюдательные данные
(Эпоха J2000.0)
Прямое восхождение 8ч 40м 6,42с[1]
Склонение +20° 00′ 28,03″[1]
Расстояние 184,437 ± 0,81 пк[1]
Видимая звёздная величина (V) 6,39[2]
Созвездие Рак
Астрометрия
Лучевая скорость (Rv) 34,135 ± 0,001 км/с[3]
Собственное движение
 • прямое восхождение −35,654 ± 0,022 mas/год[1]
 • склонение −12,019 ± 0,015 mas/год[1]
Параллакс (π) 5,4219 ± 0,0239 mas[1]
Абсолютная звёздная величина (V) 0,14
Спектральные характеристики
Спектральный класс G8+III-IIIb[4]
Показатель цвета
 • B−V 0,98
 • U−B 0,83
Физические характеристики
Масса 3,5 M☉
Радиус 11 R☉
Возраст 460 млн лет
Температура 5024 К[5]
Светимость 75,2 L☉
Металличность 0,17[6]
Вращение 0 км/с[7]
Часть от Ясли[8]
Коды в каталогах

HR 3427, SAO 80333, IRAS 08372+2011, 2MASS J08400643+2000280, GSC 01398-00027, HD 73665, HIP 42516, BD+20 2158, CCDM J08401+2000A, GC 11888, GCRV 5704, HIC 42516, IDS 08344+2022 A, IRAS F08372+2011, JP11 4114, NSV 4179, PMC 90-93 5806, PPM 98927, ROT 3630, TYC 1398-27-1, UBV 8269, uvby98 226320253, YZ 20 3484, WEB 8193, Gaia DR2 661324431287688448, 39 Cnc, Gaia DR3 661324431287688448, TIC 175262138, AG+20 1008, UBV M 33532 и EPIC 211984704

Информация в базах данных
SIMBAD * 39 Cnc
Логотип Викиданных Информация в Викиданных ?

39 Рака (лат. 39 Cancri, NSV 4179) — предположительно переменная звезда, которая находится в созвездии Рака. Это жёлтый гигант спектрального класса G, удалённый от Земли на расстояние 577 световых лет и имеющий видимую звёздную величину +6.38, то есть невидимый невооружённым глазом, но легко различимый в бинокль. Звезда входит в состав рассеянного скопления Ясли.

Характеристики

Масса 39 Рака в 3.5 раза превышает массу Солнца, радиус в 11 раз превышает солнечный. Светимость звезды мощнее солнечной в 75 раз, температура поверхности нагрета до 5125±75 Кельвинов. 39 Рака удаляется от Земли со скоростью 35 км/с.

Примечания

  1. ↑ 1 2 3 4 5 6 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. ↑ Carrera R., Casamiquela L., Carbajo-Hijarrubia J., Balaguer-Núñez L., Romero-Gómez M., Blanco-Cuaresma S., Pancino E., Lillo-Box J., Cantat-Gaudin T. OCCASO – IV. Radial velocities and open cluster kinematics (англ.) // Astronomy and Astrophysics / T. Forveille — EDP Sciences, 2022. — Vol. 658. — P. A14. — ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846 — doi:10.1051/0004-6361/202141832 — arXiv:2110.02110
  4. ↑ Keenan P. C., McNeil R. C. The Perkins catalog of revised MK types for the cooler stars (англ.) // The Astrophysical Journal: Supplement Series — AAS, 1989. — Vol. 71. — P. 245–266. — ISSN 0067-0049; 1538-4365 — doi:10.1086/191373
  5. ↑ Prugniel P., Vauglin I., Koleva M. The atmospheric parameters and spectral interpolator for the MILES stars (англ.) // Astronomy and Astrophysics / T. Forveille — EDP Sciences, 2011. — Vol. 531. — P. 165–165. — ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846 — doi:10.1051/0004-6361/201116769 — arXiv:1104.4952
  6. ↑ 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
  7. ↑ Uesugi A., Fukuda I. Catalogue of rotational velocities of the stars (англ.) — 1970. — Vol. 189.
  8. ↑ SIMBAD Astronomical Database

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