Astronomy:HD 76700 b
 An artist's impression of HD 76700 b orbiting it's 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] |
| Orbital period | 3.97097±0.00023 d[3] |
| |{{{apsis}}}|helion}} | 2451213.32±0.67 JD[2] |
| 30°[2] | |
| Semi-amplitude | 27.6±1.7 |
| Star | HD 76700 |
| Physical characteristics | |
| Mean radius | 0.99 RJ |
| Mass | 0.21±0.03 Jupiter mass[3] |
| 5.82 m/s2 | |
| Physics | 1316+85 −252 K |
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.
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's 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 4 day orbit around its host due to it being 8 times closer than Mercury is to the Sun.
References
- ↑ Tinney, C. G. et al. (2003). "Four New Planets Orbiting Metal-enriched Stars". The Astrophysical Journal 587 (1): 423–428. doi:10.1086/368068. Bibcode: 2003ApJ...587..423T.
- ↑ 2.0 2.1 2.2 Butler, R. P. et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal 646 (1): 505–522. doi:10.1086/504701. Bibcode: 2006ApJ...646..505B.
- ↑ 3.0 3.1 3.2 Stassun, Keivan G.; Collins, Karen A.; Gaudi, B. Scott (1 March 2017). "Accurate Empirical Radii and Masses of Planets and Their Host Stars with Gaia Parallaxes". The Astronomical Journal 153 (3): 136. doi:10.3847/1538-3881/aa5df3. ISSN 0004-6256. Bibcode: 2017AJ....153..136S.
External links
- "HD 76700". Exoplanets. http://media4.obspm.fr/exoplanets/base/etoile.php?nom=HD+76700.
- "HD 76700 b". http://www.exoplanetkyoto.org/exohtml/HD_76700_b.html.
Coordinates: 
08h 53m 55.5153s, −66° 48′ 03.571″
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