61 Virginis d
61 Virginis d (abbreviated 61 Vir d) is a proposed exoplanet orbiting the 5th apparent-magnitude G-type main-sequence star 61 Virginis in the constellation Virgo. 61 Virginis d would have a minimum mass of 22.9 times that of Earth and orbits nearly one-half the distance to the star as Earth orbits the Sun with an eccentricity of 0.35. This planet would most likely be a gas giant like Uranus and Neptune.
| Discovery | |
|---|---|
| Discovered by | Vogt et al. |
| Discovery site | Keck Observatory Anglo-Australian Observatory |
| Discovery date | 2009-12-14 |
| Radial velocity | |
| Orbital characteristics | |
| Apastron | 0.640 AU (95,700,000 km) |
| Periastron | 0.311 AU (46,500,000 km) |
| 0.476±0.001 AU | |
| Eccentricity | 0.35±0.09 |
| 123.01±0.55 d 0.33678 y | |
Average orbital speed | 42.2 |
| 2453369.166 | |
| 314±20 | |
| Star | 61 Virginis |
This planet was induced on 14 December 2009 from using a precise radial velocity method taken at Keck and Anglo-Australian Observatories.[1][2] As of 2012 it has not been confirmed by other measurements such as from HARPS.[3]
61 Virginis System
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.
- M. C. Wyatt; et al. (2012). "Herschel imaging of 61 Vir: implications for the prevalence of debris in low-mass planetary systems". MNRAS. 424: 1206–1223. arXiv:1206.2370. Bibcode:2012MNRAS.424.1206W. doi:10.1111/j.1365-2966.2012.21298.x.
External links
- Jean Schneider (2011). "Notes for Planet 61 Vir d". Extrasolar Planets Encyclopaedia. Retrieved 10 October 2011.
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