Английская Википедия:HD 216770
Шаблон:Short description Шаблон:Starbox begin Шаблон:Starbox observe Шаблон:Starbox character Шаблон:Starbox astrometry Шаблон:Starbox detail Шаблон:Starbox catalog Шаблон:Starbox reference Шаблон:Starbox end
HD 216770 is a star with an orbiting exoplanet in the southern constellation of Piscis Austrinus. With an apparent visual magnitude of 8.11,[1] it is too faint to be visible to the naked eye. It is located at a distance of 120 light years from the Sun, as determined by parallax measurements, and is drifting further away with a radial velocity of 31.1 km/s.[2] The star shows a high proper motion, traversing the celestial sphere at an angular rate of Шаблон:Val.[3]
The spectrum of HD 216770 presents as a late G-type main-sequence star, a yellow dwarf, with a stellar classification of G9VCN+1,[4] where the suffix notation indicates anomalously strong band of CN. The star is smaller than the Sun, with 74% of the Sun's mass and 93% of the Sun's radius.[5] It is about three billion years old and is spinning slowly with a rotation period of 35.6 days.[1] The abundance of iron, a measure of the metallicity of the star, is higher than solar. The star is radiating 79% of the luminosity of the Sun from its photosphere at an effective temperature of 5,399 K.[5]
In 2003 an exoplanet was announced orbiting it by the Geneva Extrasolar Planet Search team.[1] As the inclination of the orbital plane is unknown, only a lower bound on the mass of the object can be determined. It has at least 65% of the mass of Jupiter. The body has an eccentric orbit with a period of 118.5 days.
Шаблон:OrbitboxPlanet begin Шаблон:OrbitboxPlanet Шаблон:Orbitbox end
See also
References
External links
Шаблон:Sky Шаблон:Stars of Piscis Austrinus
- ↑ 1,0 1,1 1,2 Ошибка цитирования Неверный тег
<ref>; для сносокMayor2004не указан текст - ↑ Ошибка цитирования Неверный тег
<ref>; для сносокGaiaRVне указан текст - ↑ Ошибка цитирования Неверный тег
<ref>; для сносокLuyten1995не указан текст - ↑ Ошибка цитирования Неверный тег
<ref>; для сносокGray_et_al_2006не указан текст - ↑ 5,0 5,1 Ошибка цитирования Неверный тег
<ref>; для сносокStassunне указан текст
- Английская Википедия
- G-type main-sequence stars
- Planetary systems with one confirmed planet
- Piscis Austrinus
- Durchmusterung objects
- Henry Draper Catalogue objects
- Hipparcos objects
- Страницы, где используется шаблон "Навигационная таблица/Телепорт"
- Страницы с телепортом
- Википедия
- Статья из Википедии
- Статья из Английской Википедии
- Страницы с ошибками в примечаниях
