HD 76700 b
Extrasolar planet in the constellation Volans
From Wikipedia, the free encyclopedia
HD 76700 b is an exoplanet orbiting the G-type main sequence star HD 76700, approximately 198 light years away in the southern constellation Volans. The planet was discovered in 2002, and was announced in 2003.
Marcy et al.
An artist's impression of HD 76700 b orbiting its host star. | |
| Discovery[1] | |
|---|---|
| Discovered by | Tinney, Butler, Marcy et al. |
| Discovery site |  Anglo-Australian Telescope |
| Discovery date | July 5, 2002 |
| Radial velocity | |
| Orbital characteristics | |
| 0.0511 ± 0.0030 AU (7,640,000 ± 450,000 km)[2] | |
| Eccentricity | 0.10±0.08[3] |
| 3.97097±0.00023 d[3] | |
| 2451213.32±0.67 JD[2] | |
| 30°[2] | |
| Semi-amplitude | 27.6±1.7 |
| Star | HD 76700 |
| Physical characteristics | |
| 0.99 RJ | |
| Mass | 0.21±0.03 MJ[3] |
| 5.82 m/s2 | |
| Temperature | 1316+85 −252 K |
Discovery
In 2002, a group of scientists detected planets around multiple stars, along with HD 76700. Unlike the other planets, HD 76700 b has a short and circular orbit; however, according to the newest data, the planet's orbit may be slightly eccentric.
Properties
Due to the planet's high mass, it is a gas giant similar to Saturn. HD 76700 b was detected indirectly, so properties such as its radius, inclination, and temperature is unknown. HD 76700 b has a short four day orbit around its host due to it being eight times closer than Mercury is to the Sun.