Английская Википедия:HD 9446

Материал из Онлайн справочника
Перейти к навигацииПерейти к поиску

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 9446 is a star located about 164[1] light-years away in the constellation of Triangulum, near the southwestern constellation border with Pisces. This object can be viewed with binoculars or a telescope, but it is too faint to be seen with the naked eye at its apparent visual magnitude of 8.35.[2] It is drifting further away from the Sun with a radial velocity of +21 km/s.[2]

This object is a G-type main sequence star with a stellar classification of G5V.[3] The physical properties this star appear similar to the Sun, making it a candidate solar analog. However, the measured abundance of elements with more mass than helium is outside the accepted range.[4] It is roughly two billion years in age and has an active chromosphere. The amount of activity measured in the chromosphere corresponds to a star with a rotation period of about 10 days.[3]

On 5 January 2010, scientists announced the discovery of two planets orbiting around HD 9446.[3]

Шаблон:OrbitboxPlanet begin Шаблон:OrbitboxPlanet Шаблон:OrbitboxPlanet Шаблон:Orbitbox end

See also

References

Шаблон:Reflist

Шаблон:Sky Шаблон:HD 9446

Шаблон:Stars of Triangulum

  1. Ошибка цитирования Неверный тег <ref>; для сносок Gaia DR2 не указан текст
  2. 2,0 2,1 Ошибка цитирования Неверный тег <ref>; для сносок Anderson2012 не указан текст
  3. 3,0 3,1 3,2 Ошибка цитирования Неверный тег <ref>; для сносок aaa513 не указан текст
  4. Ошибка цитирования Неверный тег <ref>; для сносок aaa522 не указан текст