50 Рака

50 Рака
Звезда
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Наблюдательные данные
(Эпоха J2000.0)
Прямое восхождение 8ч 46м 56,02с[1]
Склонение +12° 06′ 35,83″[1]
Расстояние 55,632 ± 0,1371 пк[1]
Видимая звёздная величина (V) 5,885 ± 0,009[2]
Созвездие Рак
Астрометрия
Лучевая скорость (Rv) 23,3 ± 2,9 км/с[3]
Собственное движение
 • прямое восхождение −63,575 ± 0,049 mas/год[1]
 • склонение −50,654 ± 0,032 mas/год[1]
Параллакс (π) 17,9753 ± 0,0443 mas[1]
Абсолютная звёздная величина (V) 1,96
Спектральные характеристики
Спектральный класс A1Vp[4]
Показатель цвета
 • B−V 0,107
Физические характеристики
Масса 1,87 M☉
Радиус 1,66 R☉
Возраст 264 млн лет
Температура 8241 К[5]
Светимость 14,3 L☉
Вращение 18 км/с[6][7]
Коды в каталогах

2MASS J08465603+1206358, HD 74873, SAO 98117, HIP 43121, HR 3481, IRAS F08441+1217, GSC 00813-01445, BD+12 1904, GC 12104, GCRV 5790, HIC 43121, PPM 125732, TD1 13048, TYC 813-1445-1, UBV 8499, UCAC4 511-046921, uvby98 100074873, YZ 12 3535, YPAC 468, WEB 8324, Gaia DR2 601994405893360768, 50 Cnc, A² Cnc, Gaia DR3 601994405893360768, TIC 293413685, AG+12 1070 и UBV M 14694

Информация в базах данных
SIMBAD * 50 Cnc
Логотип Викиданных Информация в Викиданных ?

50 Рака (лат. 50 Cancri) — звезда в созвездии Рака. Находится от Земли на расстоянии 199 световых лет и имеет видимую звёздную величину +5,87, то есть звезду можно увидеть невооружённым глазом при очень хороших условиях. Это карлик белого цвета спектрального класса А главной последовательности.

Характеристики

50 Рака имеет массу, превышающую солнечную в 1,9 раза, радиус в 1,66 раза больше радиуса Солнца. Светимость мощнее солнечной в 14,3 раза, температура поверхности около 8500 кельвинов.

Примечания

  1. ↑ 1 2 3 4 5 6 Gaia Early Data Release 3 (англ.) / Data Processing and Analysis Consortium, European Space Agency — 2020.
  2. ↑ Høg E., Fabricius C., Makarov V. V., Urban S., Corbin T., Wycoff G., Bastian U., Schwekendiek P., Wicenec A. The Tycho-2 catalogue of the 2.5 million brightest stars (англ.) // Astronomy and Astrophysics / T. Forveille — EDP Sciences, 2000. — Vol. 355. — P. L27—L30. — ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846
  3. ↑ Gontcharov G. A. Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system (англ.) // Astronomy Letters / R. Sunyaev — Nauka, Springer Science+Business Media, 2006. — Vol. 32, Iss. 11. — P. 759–771. — ISSN 1063-7737; 1562-6873; 0320-0108; 0360-0327 — doi:10.1134/S1063773706110065 — arXiv:1606.08053
  4. ↑ Abt H. A., Morrell N. I. The Relation between Rotational Velocities and Spectral Peculiarities among A-Type Stars (англ.) // The Astrophysical Journal: Supplement Series — AAS, 1995. — Vol. 99. — P. 135–172. — ISSN 0067-0049; 1538-4365 — doi:10.1086/192182
  5. ↑ Zorec J., Royer F. Rotational velocities of A-type stars. IV. Evolution of rotational velocities (англ.) // Astronomy and Astrophysics / T. Forveille — EDP Sciences, 2012. — Vol. 537. — 22 p. — ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846 — doi:10.1051/0004-6361/201117691 — arXiv:1201.2052
  6. ↑ Royer F., Grenier S., Baylac, M. -O., Gómez A. E., Zorec J. Rotational velocities of A-type stars in the northern hemisphere. II. Measurement of v sin i (англ.) // Astronomy and Astrophysics / T. Forveille — EDP Sciences, 2002. — Vol. 393, Iss. 3. — P. 897—911. — ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846 — doi:10.1051/0004-6361:20020943 — arXiv:astro-ph/0205255
  7. ↑ Royer F., Zorec J., Gómez A. E. Rotational velocities of A-type stars. III. Velocity distributions (англ.) // Astronomy and Astrophysics / T. Forveille — EDP Sciences, 2007. — Vol. 463, Iss. 2. — P. 671–682. — ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846 — doi:10.1051/0004-6361:20065224 — arXiv:astro-ph/0610785

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