Английская Википедия:BD+00 316
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BD+00 316 is an ordinary star with a close-orbiting planetary companion in the equatorial constellation of Cetus. It is also known as WASP-71 since 2019;[1] BD+00 316 is the stellar identifier from the Bonner Durchmusterung catalogue. With an apparent visual magnitude of 10.56,[2] it is too faint to be visible to the naked eye. This star is located at a distance of 1,160 light-years based on parallax measurements, and is drifting further away with a heliocentric radial velocity of 7.7 km/s.[3]
This is classified as an F-type star with a stellar classification of F8.[1] It is more than double the diameter of the Sun with 1.5 times the Sun's mass. The star is younger than the Sun at about 3.6 billion years,[4] yet is already evolving away from the main sequence.[1] BD+00 316 is enriched in heavy elements, having 140% of the solar abundance of iron.[4] Imaging surveys in 2015 and 2020 failed to find any stellar companions for BD+00 316.[5][6]
The star was named Mpingo by Tanzanian amateur astronomers in 2020 as part of the NameExoWorlds contest, after the mpingo tree (Dalbergia melanoxylon) whose wood is a type of ebony used in musical instruments.[7]
Planetary system
In 2012 a transiting superjovian planet, designated component b, was detected on a tight, circular orbit.[1] The planetary orbit is well aligned with the equatorial plane of the star, the misalignment angle being equal to −1.9Шаблон:±°.[4] Its equilibrium temperature is 2,016.1Шаблон:± K.[4]
The planet was named Tanzanite by Tanzanian amateur astronomers in 2020 as part of the NameExoWorlds contest, after the mineral also known as tanzanite.[7]
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References
- ↑ 1,0 1,1 1,2 1,3 Шаблон:Citation
- ↑ Ошибка цитирования Неверный тег
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; для сносокHøg_et_al_2000
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; для сносокGaiaDR2
не указан текст - ↑ 4,0 4,1 4,2 4,3 Шаблон:Citation
- ↑ Шаблон:Citation
- ↑ Шаблон:Citation
- ↑ 7,0 7,1 The IAU announces names for WASP exoplanets
- Английская Википедия
- F-type stars
- Planetary systems with one confirmed planet
- Planetary transit variables
- Cetus
- 2MASS objects
- Durchmusterung objects
- Stars with proper names
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