HD 204313 b
| Discovery | |
|---|---|
| Discovered by | Segransan et al. |
| Discovery site | La Silla Observatory |
| Discovery date | August 11, 2009 |
| Radial velocity (CORALIE) | |
| Orbital characteristics | |
| Apastron | 3.486 AU (521,500,000 km) |
| Periastron | 2.678 AU (400,600,000 km) |
| 3.082 ± 0.055 AU (461,100,000 ± 8,200,000 km) | |
| Eccentricity | 0.0946±0.0032[1] |
| 2024.1±3.1 d[1] | |
| 3989 ± 62 | |
| 292.5±2.7[1] | |
| Star | HD 204313 |
| Physical characteristics | |
| Mass | 4.28±0.30MJ |
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 minimum mass four times that of Jupiter. However the radius and inclination are not known since this planet was not detected by transit method or direct imaging. Instead, this planet was detected by radial velocity method using the CORALIE Echelle spectrograph mounted on the 1.2 meter located at La Silla Observatory in Atacama desert, Chile on August 11, 2009.[2]
The planet existence was confirmed in 2015.[1]
References[]
- ^ a b c d 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.
- ^ 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.
Coordinates: 
21h 28m 12.2063s, −21° 43′ 34.517″
Constellation of Capricornus | |||||||||||||
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- Exoplanets discovered in 2009
- Giant planets
- Capricornus (constellation)
- Exoplanets detected by radial velocity
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