Английская Википедия:13 Trianguli
Шаблон:Short description Шаблон:Starbox begin Шаблон:Starbox image Шаблон:Starbox observe Шаблон:Starbox character Шаблон:Starbox astrometry Шаблон:Starbox detail Шаблон:Starbox catalog Шаблон:Starbox reference Шаблон:Starbox end
13 Trianguli is the Flamsteed designation for a star in the northern constellation of Triangulum. It has an apparent visual magnitude of 5.89,[1] so according to the Bortle scale it is faintly visible from dark suburban skies. The star is located at a distance of 103 light years from the Sun based on parallax measurements,[2] and is drifting further away with a radial velocity of +41 km/s.[3] It made a close approach to the Sun some 665,000 years ago at an estimated separation of Шаблон:Convert.[1]
A stellar classification of G0 V[1] indicates this is a main sequence star that is generating energy by fusing hydrogen into helium at its core. It has about 110% of the Sun's mass, 186% of the Sun's radius, and shines with 3.72 times the luminosity of the Sun. The stellar atmosphere has an effective temperature of 5,846 K,[4] giving it the yellow hue of a G-type star.[5] It appears to be older than the Sun, with an estimated age of 6.45 billion years.[4]
In 1994, an astrometric companion was reported at an angular separation of 0.020″. However, follow-up observations reported in 2005 not only failed to recover this object but also returned a null result on a search for planetary companions.[6] The star has been examined for an infrared excess that could indicate the presence of an orbiting debris disk, but no such excess was found.[7]
References
Шаблон:Stars of Triangulum Шаблон:Sky
- ↑ 1,0 1,1 1,2 Ошибка цитирования Неверный тег
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; для сносокcsiro
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- Английская Википедия
- Triangulum
- Flamsteed objects
- G-type main-sequence stars
- Hipparcos objects
- Bright Star Catalogue objects
- Henry Draper Catalogue objects
- Durchmusterung objects
- Gliese and GJ objects
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