Английская Википедия:HIP 57274
Шаблон:Starbox begin Шаблон:Starbox observe Шаблон:Starbox character Шаблон:Starbox astrometry Шаблон:Starbox detail Шаблон:Starbox catalog Шаблон:Starbox reference Шаблон:Starbox end
HIP 57274 is a star in the northern circumpolar constellation of Ursa Major with a system of three planets.[1] It is invisible to the naked eye, having an apparent visual magnitude of 8.96.[1] The distance to this system is 84.4 light years based on stellar parallax, and it is drifting further away with a radial velocity of +30 km/s.[2] The star has a relatively high rate of proper motion, traversing the celestial sphere at the rate of Шаблон:Val.[3]
This is an ordinary K-type main-sequence star with a stellar classification of K5V.[1] It appears to be older than the Sun with an age of roughly eight billion years and is spinning slowly with a projected rotational velocity of under 1 km/s. The star has 73% of the mass of the Sun and 68% of the Sun's radius. The abundance of elements heavier than helium is about the same or slightly higher than in the Sun. The star is radiating just 19% of the luminosity of the Sun from its photosphere at an effective temperature of 4,640 K.
Planetary system
The three exoplanets orbiting HIP 57274 were discovered by the radial velocity method in 2011, all of them having mass significantly greater than the Earth.[1] A 2014 search for planetary transits was unsuccessful.[4] The planetary orbits are possibly highly variable, being strongly affected by mean motion resonances.[5] The most stable region for a hypothetical super-earth within the star's habitable zone would be an orbit inside 0.37–Шаблон:Val from the host star.[5]
Шаблон:OrbitboxPlanet begin Шаблон:OrbitboxPlanet Шаблон:OrbitboxPlanet Шаблон:OrbitboxPlanet Шаблон:Orbitbox end
References
- ↑ 1,0 1,1 1,2 1,3 Ошибка цитирования Неверный тег
<ref>
; для сносокFischer2012
не указан текст - ↑ Ошибка цитирования Неверный тег
<ref>
; для сносокGaia DR2
не указан текст - ↑ Ошибка цитирования Неверный тег
<ref>
; для сносокLepine2005
не указан текст - ↑ Ошибка цитирования Неверный тег
<ref>
; для сносокKammer_et_al_2014
не указан текст - ↑ 5,0 5,1 Ошибка цитирования Неверный тег
<ref>
; для сносокElser2013
не указан текст
- Английская Википедия
- K-type main-sequence stars
- Planetary systems with three confirmed planets
- Ursa Major
- 2MASS objects
- Durchmusterung objects
- Gliese and GJ 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