astro.wikisort.org - Meteorite
HD 108147 b is a gas giant exoplanet with a minimum mass about half that of Jupiter. It orbits the star in a very tight "torch orbit". The distance between the planet and the star is only a tenth of the distance between Earth and the Sun (0.1AU).[2] A number of such worlds are known to exist, but the eccentricity of this planet is unusually high. Planets orbiting very close to their parent stars usually have round orbits because of the tidal forces between the bodies.
 The exoplanet HD 108147 b (min mass ~0.4 MJ) rendered by Celestia | |
| Discovery | |
|---|---|
| Discovered by | Pepe, Mayor, Galland et al. |
| Discovery site | La Silla Observatory, Chile |
| Discovery date | April 15, 2000[1] |
Detection method | Doppler spectroscopy (CORALIE) |
| Orbital characteristics | |
Semi-major axis | 0.104 AU (15,600,000 km) |
| Eccentricity | 0.498 ± 0.025 |
Orbital period (sidereal) | 10.901 ± 0.001 d |
Time of periastron | 2,451,591.6 ± 0.1 |
Argument of periastron | 318 ± 3.03 |
| Semi-amplitude | 25.1 ± 6.1 |
| Star | HD 108147 |
In December 2019, the International Astronomical Union announced the exoplanet will bear the name 'Tumearandu, after the popular character of the folklore of Paraguay. The name was a result of a contest ran in Paraguay by the Centro Paraguayo de Informaciones Astronómicas, along with the IAU100 NameExoWorlds 2019 global contest.[3]
See also
References
- "Exoplanets Galore!" (Press release). Garching, Germany: European Southern Observatory. April 15, 2000. Retrieved December 30, 2012.
- Pepe, F.; et al. (2002). "The CORALIE survey for southern extra-solar planets VII. Two short-period Saturnian companions to HD 108147 and HD 168746". Astronomy and Astrophysics. 388 (2): 632–638. arXiv:astro-ph/0202457. Bibcode:2002A&A...388..632P. doi:10.1051/0004-6361:20020433. S2CID 13942987.
- "NameExoWorlds Paraguay".
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External links
- "HD 108147". Exoplanets. Archived from the original on 2009-11-25. Retrieved 2008-10-31.
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На других языках
- [en] HD 108147 b
[es] HD 108147 b
HD 108147 b es un planeta extrasolar, un gigante gaseoso con una masa mínima la mitad de la de Júpiter. Orbita muy próximo a su estrella. La distancia entre el planeta y la estrella es sólo una décima parte de los distancia entre la Tierra y el Sol (0,1 UA). Se han conocido mucho planetas con características como ésta, pero la excentricidad de éste es inusualmente alta. Los planetas que orbitan tan próximos de sus estrellas madres suelen tener órbitas más redondeadas debido a las fuerzas de marea entre cuerpos.Другой контент может иметь иную лицензию. Перед использованием материалов сайта WikiSort.org внимательно изучите правила лицензирования конкретных элементов наполнения сайта.
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