44 Близнецов

44 Близнецов
Звезда
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Наблюдательные данные
(Эпоха J2000.0)
Прямое восхождение 7ч 05м 18,37с[1]
Склонение +22° 38′ 14,85″[1]
Расстояние 142,203 ± 1,1729 пк[1]
Видимая звёздная величина (V) 6,01 ± 0,009[2]
Созвездие Близнецы
Астрометрия
Лучевая скорость (Rv) −11 ± 4,3 км/с[3]
Собственное движение
 • прямое восхождение −2,605 ± 0,083 mas/год[1]
 • склонение −9,727 ± 0,08 mas/год[1]
Параллакс (π) 7,0322 ± 0,058 mas[1]
Абсолютная звёздная величина (V) 0,55
Спектральные характеристики
Спектральный класс B8Vn[4]
Показатель цвета
 • B−V −0,03
 • U−B −0,09
Физические характеристики
Радиус 2,49 R☉
Температура 9795 К[5]
Вращение 260 км/с[6]
Коды в каталогах

GCRV 4651, GSC 01895-01643, HD 53257, HIC 34182, HIP 34182, 2MASS J07051836+2238148, N30 1542, PPM 97006, ROT 1139, SAO 79042, TD1 8991, UBV 6941, uvby98 100053257, YZ 22 2759, AG+22 815, BD+22 1566, WEB 6846, Gaia DR2 3368219563772518784, 44 Gem, Gaia DR3 3368219563772518784, TIC 436964801, GC 9337, HR 2659, TYC 1895-1643-1 и UBV M 12806

Информация в базах данных
SIMBAD * 44 Gem
Логотип Викиданных Информация в Викиданных ?

44 Близнецов (лат. 44 Geminorum, HD 53257) — одиночная звезда в созвездии Близнецов на расстоянии приблизительно 464 световых лет (около 142 парсеков) от Солнца. Видимая звёздная величина звезды — +6,01m[2].

Характеристики

44 Близнецов — бело-голубая звезда спектрального класса B85n[4]. Радиус — около 2,49 солнечных, светимость — около 64,65 солнечных. Эффективная температура — около 9795 К[5].

Примечания

  1. ↑ 1 2 3 4 5 6 Gaia Early Data Release 3 (англ.) / Data Processing and Analysis Consortium, European Space Agency — 2020.
  2. ↑ 1 2 Oja T. UBV photometry of stars whose positions are accurately known. VI (англ.) // Astronomy and Astrophysics / T. Forveille — EDP Sciences, 1991. — Vol. 89. — P. 415–419. — 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. ↑ 1 2 Cowley A., Cowley C., Jaschek M., Jaschek C. A study of the bright A stars. I. A catalogue of spectral classifications, A study of the bright stars. I. A catalogue of spectral classifications (англ.) // The Astronomical Journal / J. G. III, E. Vishniac — New York City: IOP Publishing, AAS, University of Chicago Press, AIP, 1969. — Vol. 74. — P. 375–406. — ISSN 0004-6256; 1538-3881 — doi:10.1086/110819
  5. ↑ 1 2 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. ↑ Abt H. A., Levato H., Grosso M. Rotational Velocities of B Stars (англ.) // The Astrophysical Journal / E. Vishniac — IOP Publishing, 2002. — Vol. 573, Iss. 1. — P. 359–365. — ISSN 0004-637X; 1538-4357 — doi:10.1086/340590

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