49 Рака

49 Рака
Звезда
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Наблюдательные данные
(Эпоха J2000.0)
Прямое восхождение 8ч 44м 45,04с[1]
Склонение +10° 04′ 54,01″[1]
Расстояние 153,7 ± 1,767 пк[1]
Видимая звёздная величина (V) 5,66[2]
Созвездие Рак
Астрометрия
Лучевая скорость (Rv) 27,5 ± 1,4 км/с[3]
Собственное движение
 • прямое восхождение −14,686 ± 0,085 mas/год[1]
 • склонение −18,466 ± 0,095 mas/год[1]
Параллакс (π) 6,5062 ± 0,0748 mas[1]
Абсолютная звёздная величина (V) 0,07
Спектральные характеристики
Спектральный класс A1VpHgMnSiEu[4]
Показатель цвета
 • B−V −0,11
 • U−B −0,25
Переменность α² Гончих Псов[5]
Физические характеристики
Масса 3,011 M☉
Радиус 2,909 R☉
Возраст 263 млн лет
Температура 8842 К[6]
Светимость 110 L☉
Металличность −0,14[6]
Вращение 18 км/с[7]
Коды в каталогах

HR 3465, 2MASS J08444503+1004540, HD 74521, SAO 98089, HIP 42917, b Cnc, BD+10 1864, CSV 6657, FK5 2688, GC 12029, GCRV 5771, GSC 00813-02941, HIC 42917, PPM 125684, TD1 12993, TYC 813-2941-1, UBV 8455, BI Cnc, YZ 10 3524, uvby98 100074521, WEB 8294, Gaia DR2 598314443554350464, 49 Cnc, Gaia DR3 598314443554350464, TIC 443995718, AG+10 1135, UBV M 14652, Renson 20790 и EPIC 211311439

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

49 Рака (лат. 49 Cancri) — переменная звезда типа α² Гончих Псов, звезда главной последовательности спектрального класса А. Находится в созвездии Рака. Удалена от Земли на расстояние около 400 световых лет, имея видимую звёздную величину — +5.62, то есть звезду можно едва разглядеть невооружённым глазом при условиях ясной погоды и отсутствия Луны.

Исследования

По этой звезде проводились следующие исследования:

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. ↑ 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. ↑ SIMBAD Astronomical Database
  6. ↑ 1 2 Allen M. S. Ytrium in the peculiar A and B stars (англ.) // The Astrophysical Journal Letters — IOP Publishing, 1977. — Vol. 213. — P. 121–131. — ISSN 2041-8205; 2041-8213 — doi:10.1086/155136
  7. ↑ 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

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