astro.wikisort.org - Meteorite
HD 204313 b is an extrasolar planet which orbits the G-type main sequence star HD 204313, located approximately 155 light years away in the constellation Capricorn. This planet orbits the star at a distance of 3.082 astronomical units and takes 1931 days or 5.29 years to revolve around the star. It has a minimum mass four times that of Jupiter. However the radius is not known since this planet was not detected by the transit method or direct imaging. Instead, this planet was detected by the radial velocity method using the CORALIE Echelle spectrograph mounted on the 1.2 meter Euler Swiss Telescope located at La Silla Observatory in Atacama desert, Chile on August 11, 2009.[2]
| Discovery | |
|---|---|
| Discovered by | Segransan et al. |
| Discovery site | La Silla Observatory |
| Discovery date | August 11, 2009 |
Detection method | Radial velocity (CORALIE) |
| Orbital characteristics[1] | |
Semi-major axis | 3.185+0.130 −0.143 AU |
| Eccentricity | 0.100±0.003 |
Orbital period (sidereal) | 5.588 ± 0.005 years (2,041.0 ± 1.8 d) |
| Inclination | 72.917°+31.372° −21.476° |
Longitude of ascending node | 176.845°+118.200° −71.383° |
Time of periastron | 2449883.770+11.374 −10.368 |
Argument of periastron | 286.990°+1.625° −1.784° |
| Semi-amplitude | 69.433+0.308 −0.323 m/s |
| Star | HD 204313 |
| Physical characteristics[1] | |
| Mass | 4.615+1.290 −0.306 MJ |
The planet's existence was independently confirmed in 2015,[3] and in 2022 its inclination and true mass were measured via astrometry.[1]
References
- Feng, Fabo; Butler, R. Paul; et al. (August 2022). "3D Selection of 167 Substellar Companions to Nearby Stars". The Astrophysical Journal Supplement Series. 262 (21). arXiv:2208.12720. Bibcode:2022arXiv220812720F. doi:10.3847/1538-4365/ac7e57.
- Segransan; et al. (February 2010). "The CORALIE survey for southern extrasolar planets. XVI. Discovery of a planetary system around HD 147018 and of two long period and massive planets orbiting HD 171238 and HD 204313". Astronomy & Astrophysics. 511. article A45. arXiv:0908.1479. Bibcode:2010A&A...511A..45S. doi:10.1051/0004-6361/200912136.
- Díaz, R. F.; et al. (2016). "The HARPS search for southern extra-solar planets. XXXVIII. Bayesian re-analysis of three systems. New super-Earths, unconfirmed signals, and magnetic cycles". Astronomy and Astrophysics. 585. A134. arXiv:1510.06446. Bibcode:2016A&A...585A.134D. doi:10.1051/0004-6361/201526729. S2CID 118531921.
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На других языках
- [en] HD 204313 b
[es] HD 204313 b
HD 204313 b es un planeta extrasolar que orbita la estrella de tipo G HD 204313, localizado aproximadamente a 155 años luz, en la constelación de Capricornio. Este planeta tiene al menos 4 veces la masa de Júpiter y tarda 5,29 años en completar su periodo orbital, con un semieje mayor de 3,08 UA.[1] Sin embargo, se desconoce su radio y su inclinación ya que no fue descubierto por el método de tránsito astronómico o imagen directa. Este planeta fue detectado por el método de la velocidad radial usando el espectografo Echelle CORALIE montado en el telescopio Euler Swiss del observatorio de La Silla (Chile) el 11 de agosto de 2009. El astrónomo Wladimir Lyra (2009) ha propuesto Dryope como el nombre común posible para HD 204313 b.[2]Другой контент может иметь иную лицензию. Перед использованием материалов сайта WikiSort.org внимательно изучите правила лицензирования конкретных элементов наполнения сайта.
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