HD 45652 b
HD 45652 b is a gas giant extrasolar planet orbiting at only 0.23 AU from the star HD 45652, with an orbital period of 44 days. It has mass at least half that of Jupiter. As it was detected using the radial velocity method, its true mass is dependent on the inclination of its orbit; if it is low, then the true mass will be larger. Also, its radius is not known. This planet was discovered by measurements taken by the ELODIE spectrograph from 2005 and 2006, and later confirmed by CORALIE and SOPHIE between 2006 and 2007. The discovery was announced in May 2008.[2]
| Discovery | |
|---|---|
| Discovered by | Santos et al. |
| Discovery site | Haute-Provence Observatory, France |
| Discovery date | May 2008 |
| radial velocity from ELODIE | |
| Orbital characteristics | |
| 0.237±0.011 AU | |
| Eccentricity | 0.607±0.026[1] |
| 44.073±0.0048[1] d | |
| 2463720.92±0.45[1] | |
| 227.7±5.6[1] | |
| Semi-amplitude | 33.2±1.8[1] |
| Star | HD 45652 |
HD 45652 b, was officially named Viriato on the 17th of December 2019 after the IAU100 press conference in Paris by the IAU (International Astronomical Union)[3].
References
- Ment, Kristo; et al. (2018). "Radial Velocities from the N2K Project: Six New Cold Gas Giant Planets Orbiting HD 55696, HD 98736, HD 148164, HD 203473, and HD 211810". The Astronomical Journal. 156 (5). 213. arXiv:1809.01228. Bibcode:2018AJ....156..213M. doi:10.3847/1538-3881/aae1f5.
- Santos, N. C.; et al. (2008). "ELODIE metallicity-biased search for transiting Hot Jupiters. V. An intermediate-period Jovian planet orbiting HD 45652". Astronomy and Astrophysics. 487 (1): 369–372. arXiv:0805.1019. Bibcode:2008A&A...487..369S. doi:10.1051/0004-6361:200809402.
- "112 sets of exoplanets and host stars named in the IAU100". International Astronomical Union. Retrieved 2019-12-18.
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