61 Virginis c
61 Virginis c (abbreviated 61 Vir c) is an exoplanet orbiting the 5th apparent-magnitude G-type main-sequence star 61 Virginis in the constellation Virgo. 61 Virginis c has a minimum mass of 18.2 times that of Earth and orbits one-fifth the distance to the star as Earth orbits the Sun, at a precise distance of 0.2175 AU with an eccentricity of 0.14. This planet would most likely be a gas giant like Uranus and Neptune. This planet was discovered on 14 December 2009 from using a precise radial velocity method taken at Keck and Anglo-Australian Observatories.[1][2]
61 Virginis System
| Discovery | |
|---|---|
| Discovered by | Vogt et al. |
| Discovery site | Keck Observatory Anglo-Australian Observatory |
| Discovery date | 2009-12-14 |
| Radial velocity | |
| Orbital characteristics | |
| Apastron | 0.2487 AU (37,200,000 km) |
| Periastron | 0.1863 AU (27,870,000 km) |
| 0.2175±0.0001 AU | |
| Eccentricity | 0.14±0.06 |
| 38.021±0.034 d 0.10409 y | |
Average orbital speed | 62.45 |
| 2453369.166 | |
| 341±38 | |
| Star | 61 Virginis |
References
- Vogt, Steven (2009). "A Super-Earth and two Neptunes Orbiting the Nearby Sun-like star 61 Virginis". The Astrophysical Journal. 708: 1366–1375. arXiv:0912.2599. Bibcode:2010ApJ...708.1366V. doi:10.1088/0004-637X/708/2/1366.
- Tim Stephens (2009-12-14). "New planet discoveries suggest low-mass planets are common around nearby stars". UCSC News. UC Santa Cruz. Archived from the original on 23 December 2009. Retrieved 2009-12-14.
External links
- Jean Schneider (2011). "Notes for Planet 61 Vir c". Extrasolar Planets Encyclopaedia. Retrieved 10 October 2011.
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