Английская Википедия:HD 213240
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:End
HD 213240 is a possible binary star[1] system in the constellation Grus. It has an apparent visual magnitude of 6.81,[2] which lies below the limit of visibility for normal human sight. The system is located at a distance of 133.5 light years from the Sun based on parallax. The primary has an absolute magnitude of 3.77.[2]
This is an ordinary G-type main-sequence star with a stellar classification of G0/G1V.[3] It is a metal-rich star with an age that has been calculated as being anywhere from 2.7 to 4.6 billion years.[1] The star has 1.6[4] times the mass of the Sun and 1.56[5] times the Sun's radius. It is spinning with a projected rotational velocity of 3.5 km/s.[6] The star is radiating 2.69[5] times the luminosity of the Sun from its photosphere at an effective temperature of 5,921 K.[5]
A red dwarf companion star was detected in 2005 with a projected separation of 3,898 AU.[1]
Planetary system
The Geneva extrasolar planet search team discovered a planet orbiting this star in 2001.[7] Since this planet was discovered by radial velocity, only its minimum mass was initially known, and there was a 5% chance of it being massive enough to be a brown dwarf.[1] In 2023, the inclination and true mass of HD 213240 b were determined via astrometry, confirming its planetary nature.[8]
Шаблон:OrbitboxPlanet begin Шаблон:OrbitboxPlanet Шаблон:Orbitbox end
See also
References
- ↑ 1,0 1,1 1,2 1,3 Ошибка цитирования Неверный тег
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<ref>; для сносокHouk1978не указан текст - ↑ Ошибка цитирования Неверный тег
<ref>; для сносокStassun2017не указан текст - ↑ 5,0 5,1 5,2 Ошибка цитирования Неверный тег
<ref>; для сносокGaiaDR2не указан текст - ↑ Ошибка цитирования Неверный тег
<ref>; для сносокDelgado_Mena2015не указан текст - ↑ Ошибка цитирования Неверный тег
<ref>; для сносокSantos2001не указан текст - ↑ Ошибка цитирования Неверный тег
<ref>; для сносокXiao2023не указан текст
- Английская Википедия
- G-type main-sequence stars
- Planetary systems with one confirmed planet
- Binary stars
- Grus (constellation)
- Durchmusterung objects
- Henry Draper Catalogue objects
- Hipparcos objects
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- Википедия
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