Английская Википедия:HD 43197

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Версия от 03:23, 18 марта 2024; EducationBot (обсуждение | вклад) (Новая страница: «{{Английская Википедия/Панель перехода}} {{short description|Star in the constellation Canis Major}} {{Starbox begin|name=HD 43197 / Amadioha}} {{Starbox observe | epoch = J2000.0 | constell = Canis Major | ra = {{RA|06|13|35.66155}}<ref name=GaiaDR3/> | dec = {{DEC|-29|53|50.1516}}<ref name=GaiaDR3/> | appmag_v = 8.98<ref name=Anderson_Francis_2012/> }} {{Starbox character | type...»)
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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 43197 is a star with an exoplanetary companion in the southern constellation of Canis Major. It has been given the proper name Amadioha, as selected by Nigeria during the NameExoWorlds campaign that celebrated the 100th anniversary of the IAU. Amadioha is the god of thunder in Igbo mythology.[1][2] It has an apparent visual magnitude of 8.98,[3] meaning this is a ninth magnitude star that is too dim to be visible to the naked eye. The system is located at a distance of 204 light-years from the Sun based on parallax measurements, and is drifting further away with a radial velocity of +72 km/s.[4] It made its closest approach some 583,000 years ago when it came to within Шаблон:Convert.[3]

The stellar classification of this star is G8/K0 IV/V,[5] which may be interpreted to mean the spectrum is intermediate between similar stars of class G8 and K0, and its luminosity class showing a blend of a main sequence star (V) and a subgiant star (IV). It is a weakly active star with a high metallicity, being five halves as much as the Sun.[6] The star is about the same mass and size as the Sun, although the luminosity is only 74% of solar.[7] The star's age is estimated to be at least three billion years[6] and it is modelled to be right at the end of its main sequence life.[4]

Planetary system

In 2009, the HARPS planet search program announced a Jovian planet in a highly eccentric orbit around the star.[6] The planet spends ~78% of its orbital period in the habitable zone of the host star, although temperatures can reach Шаблон:Val during periastron passage.[8] In 2022, a second super-Jovian planet was discovered using a combination of radial velocity and astrometry. Assuming the inner planet shares the outer planet's orbital inclination, its true mass would be about Шаблон:Jupiter mass.[9]

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

See also

References

Шаблон:Reflist

Шаблон:Sky Шаблон:Stars of Canis Major Шаблон:Authority control

Партнерские ресурсы
Криптовалюты
Магазины
Хостинг
Разное

  1. ↑ Ошибка цитирования Неверный тег <ref>; для сносок namexoworlds не указан текст
  2. ↑ Ошибка цитирования Неверный тег <ref>; для сносок IAU не указан текст
  3. ↑ 3,0 3,1 Ошибка цитирования Неверный тег <ref>; для сносок Anderson_Francis_2012 не указан текст
  4. ↑ 4,0 4,1 Ошибка цитирования Неверный тег <ref>; для сносок GaiaDR3 не указан текст
  5. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Houk1982 не указан текст
  6. ↑ 6,0 6,1 6,2 Ошибка цитирования Неверный тег <ref>; для сносок Naef2010 не указан текст
  7. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Bonfanti2015 не указан текст
  8. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Kane_Gelino_2011 не указан текст
  9. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Feng2022 не указан текст
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