HD 93083

HD 93083
Звезда
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Наблюдательные данные
(Эпоха J2000.0)
Тип Одиночная звезда
Прямое восхождение 10ч 44м 20,91с
Склонение −33° 34′ 37,28″
Расстояние 94 св. года [1]
Видимая звёздная величина (V) 8,30 [1]
Созвездие Насос
Астрометрия
Лучевая скорость (Rv) 41,7 [2] км/c
Собственное движение
 • прямое восхождение −93,85 [2] mas в год
 • склонение −150,99 [2] mas в год
Параллакс (π) 35,90 ± 0,89 [2] mas
Абсолютная звёздная величина (V) 6,0 [1]
Спектральные характеристики
Спектральный класс K2V [1]
Показатель цвета
 • B−V 0,945 [1]
Физические характеристики
Масса 0,70±0,04 [1] M⊙
Радиус 0,85 R⊙
Возраст 6 млрд. лет[3]
Температура 4995±50 [1] K
Светимость 0,41 [1] L⊙
Металличность [Fe/H]=0,15±0,06[1]
Вращение 0,9 км/с-1[1]
Коды в каталогах

HD 93083, HIC 52521, HIP 52521, NLTT 25207, PPM 288057, SAO 201693, CD -32 7598, CPD -32 2958, GCRV 61572, GJ 1137, GSC 07190-02048, TYC 7190-2048-1, UBV 9871, UGP 243

Информация в базах данных
SIMBAD данные
Источники: [2]
Логотип Викиданных Информация в Викиданных ?

HD 93083 — звезда, которая находится в созвездии Насос на расстоянии приблизительно 94 световых лет от нас. Вокруг звезды обращается, как минимум, одна планета.

Характеристики

HD 93083 представляет собой звезду 8,3 видимой звёздной величины. Это оранжевый карлик, по массе и размерам уступающий нашему Солнцу. Её масса равна 70% солнечной.[1] Температура поверхности составляет около 4995 кельвинов. Светимость звезды составляет всего лишь 41% солнечной светимости.

Планетная система

В 2005 году у звезды с помощью высокоточных измерений радиальных скоростей проекта HARPS была обнаружена[1] планета, которая получила обозначение HD 93083 b. Это газовый гигант, имеющий массу, равную 37% массы Юпитера. Она обращается на расстоянии около 0,47 а.е. Год на ней длится более 143 суток.

Планета
 Масса
(MJ) 		Радиус
(RJ) 		Период обращения
(дней) 		Большая полуось
орбиты (а.е.) 		Эксцентриситет
орбиты
b 0,37 - 143,58±0,6 0,477 0,14±0,03

Примечания

  1. ↑ 1 2 3 4 5 6 7 8 9 10 11 12 C. Lovis, M. Mayor, F. Bouchy, F. Pepe, D. Queloz, N. C. Santos, S. Udry, W. Benz, J.-L. Bertaux, C. Mordasini, J.-P. Sivan. The HARPS search for southern extra-solar planets. III. Three Saturn-mass planets around HD 93083, HD 101930 and HD 102117 (англ.). Arxiv.org (30 марта 2005). Дата обращения: 3 мая 2012. Архивировано 11 января 2017 года.
  2. ↑ 1 2 3 4 5 SIMBAD (англ.). — HD 93083 в базе данных SIMBAD. Дата обращения: 2 мая 2012.
  3. ↑ Saffe C., Gómez M., Chavero C. On the ages of exoplanet host stars (англ.) // Astronomy and Astrophysics / T. Forveille — EDP Sciences, 2005. — Vol. 443, Iss. 2. — P. 609–626. — ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846 — doi:10.1051/0004-6361:20053452 — arXiv:astro-ph/0510092

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