Английская Википедия:Gliese 754
Шаблон:Short description Шаблон:Starbox begin Шаблон:Sky Шаблон:Starbox observe Шаблон:Starbox character Шаблон:Starbox astrometry Шаблон:Starbox detail Шаблон:Starbox catalog Шаблон:Starbox reference Шаблон:Starbox image Шаблон:Starbox end
Gliese 754 is a dim star in the southern constellation of Telescopium. It has an apparent visual magnitude of 12.25,[1] which requires a telescope to view. The star is located at a distance of 19.3 light-years from the Sun based on parallax,[2] and it is drifting further away with a radial velocity of +7 km/s.[3] It is one of the hundred closest stars to the Solar System. Calculations of its orbit around the Milky Way showed that it is eccentric, and indicate that it might be a thick disk object.[4]
The stellar classification of Gliese 754 is M4V,[1] indicating that this is a small red dwarf star on the core hydrogen fusing main sequence. It has 17% of the mass of the Sun and 21% of the Sun's radius.[3] The star is fully convective and is a source of X-ray emission.[5] It is rotating slowly with a period of about 133 days.[3] The metallicity is sub-solar,[6] indicating it has a lower abundance of heavy elements compared to the Sun. It is radiating just 0.5%[7] of the luminosity of the Sun from its photosphere at an effective temperature of around 3,202 K.[6]
Planetary System
In June 2019, a candidate exoplanet was reported in orbit around Gliese 754. It was detected using the Doppler method and is orbiting at a distance of Шаблон:Val with a period of 78 days. The orbit is essentially circular, to within the margin of error.[8] The habitable zone for this star ranges from Шаблон:Val to Шаблон:Val;[7] inside the orbit of this proposed companion.
Шаблон:OrbitboxPlanet begin Шаблон:OrbitboxPlanet hypothetical Шаблон:Orbitbox end
References
Шаблон:Nearest star systems Шаблон:Stars of Telescopium
- ↑ 1,0 1,1 Ошибка цитирования Неверный тег
<ref>
; для сносокHenry_et_al_2018
не указан текст - ↑ Ошибка цитирования Неверный тег
<ref>
; для сносокGaiaDR2
не указан текст - ↑ 3,0 3,1 3,2 Ошибка цитирования Неверный тег
<ref>
; для сносокNewton_et_al_2018
не указан текст - ↑ Ошибка цитирования Неверный тег
<ref>
; для сносокInnanen_Flynn_2010
не указан текст - ↑ Ошибка цитирования Неверный тег
<ref>
; для сносокWright2018
не указан текст - ↑ 6,0 6,1 Ошибка цитирования Неверный тег
<ref>
; для сносокHoudebine_et_al_2016
не указан текст - ↑ 7,0 7,1 Ошибка цитирования Неверный тег
<ref>
; для сносокMayor_et_al_2009
не указан текст - ↑ Ошибка цитирования Неверный тег
<ref>
; для сносокBarnes_et_al_2019
не указан текст