| Discovery | |
|---|---|
| Discovered by | Vogtet 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±0.0001AU | |
| Eccentricity | 0.14±0.06 |
| 38.021±0.034d 0.10409y | |
Averageorbital speed | 62.45 |
| 2453369.166 | |
| 341±38 | |
| Star | 61 Virginis |
61 Virginis c (abbreviated61 Vir c) is anexoplanet orbiting the 5thapparent-magnitudeG-type main-sequence star61 Virginis in the constellationVirgo. 61 Virginis c has aminimum 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 agas giant likeUranus andNeptune. This planet was discovered on 14 December 2009 from using a preciseradial velocity method taken atKeck andAnglo-Australian Observatories.[1][2]
