29 Рака

29 Рака
Звезда
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Наблюдательные данные
(Эпоха J2000.0)
Прямое восхождение 8ч 28м 37,34с[1]
Склонение +14° 12′ 38,97″[1]
Расстояние 110,711 ± 0,4118 пк[1]
Видимая звёздная величина (V) 5,948 ± 0,01[2]
Созвездие Рак
Астрометрия
Лучевая скорость (Rv) 2 ± 4,3 км/с[3]
Собственное движение
 • прямое восхождение −13,849 ± 0,037 mas/год[1]
 • склонение −12,252 ± 0,027 mas/год[1]
Параллакс (π) 9,0325 ± 0,0336 mas[1]
Абсолютная звёздная величина (V) 1,07
Спектральные характеристики
Спектральный класс A5V[4][5][…]
Показатель цвета
 • B−V 0,188
Физические характеристики
Масса 2,6 M☉
Радиус 2,55 R☉
Температура 7727 К[6]
Светимость 31,92 L☉
Вращение 117 км/с[7][8]
Коды в каталогах

HD 71555, HIP 41578, SAO 97843, HR 3333, 2MASS J08283734+1412388, GSC 00808-01546, BD+14 1899, FK5 1222, GC 11584, GCRV 5585, HIC 41578, N30 1970, PMC 90-93 832, PPM 125310, ROT 1345, SRS 31222, TD1 12477, TYC 808-1546-1, UBV 8071, uvby98 100071555, YZ 14 3413, WEB 8025, Gaia DR2 651636393815708800, 29 Cnc, Gaia DR3 651636393815708800, TIC 20420151, AG+14 915 и UBV M 14343

Информация в базах данных
SIMBAD * 29 Cnc
Логотип Викиданных Информация в Викиданных ?

29 Рака (лат. 29 Cancri) — звезда, которая находится в созвездии Рака. Удалена от Земли на расстоянии примерно 307,5 светового года и имеет видимую звёздную величину +5.94, то есть может быть видна невооружённым глазом при идеальных условиях (при отсутствии светового загрязнения, Луны на небе, облаков и ветра, а также при низкой влажности). Это белый карлик спектрального класса A главной последовательности.

Характеристики

29 Рака имеет массу 2,6 Солнца, радиус больше солнечного в 2,5 раза. Светимость звезды превышают солнечную почти в 32 раза, температура поверхности составляет около 8600 градусов по Кельвину. Удаляется от Солнечной системы медленно, со скоростью 2 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. ↑ 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. ↑ Palmer D. R., Walker E. N., Jones D. H. P., Wallis R. E. The radial velocities spectral types and projected rotational velocities of 633 bright northern A stars (англ.) // (unknown type) — 1968. — Vol. 135. — P. 385.
  5. ↑ Osawa K. Spectral classification of 533 B8-A2 stars and the mean absolute magnitude of A0V stars (англ.) // The Astrophysical Journal Letters — United Kingdom: IOP Publishing, 1959. — Vol. 130. — P. 159–177. — ISSN 2041-8205; 2041-8213 — doi:10.1086/146706
  6. ↑ 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
  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
  8. ↑ 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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