01h57m09.6064s, −10° 14′ 32.739″| Discovery | |
|---|---|
| Discovered by | Butler et al. |
| Discovery site | California, United States |
| Discovery date | 5 August 2005 Confirmed 27 May 2007 |
| Doppler spectroscopy | |
| Orbital characteristics | |
| 0.229 AU (34,300,000 km)[1] | |
| Eccentricity | 0.15[1] |
| 37.82[1] d | |
| 2,454,370 ± 380[1] | |
| 102[1] | |
| Semi-amplitude | 4.65 ± 0.59[1] |
| Star | HD 11964 |
HD 11964 c is an extrasolar planet approximately 110 light-years away in the constellationofCetus. The planet was discovered in a close-orbit around the yellow subgiant star HD 11964. The planet has a minimum mass 35 times the mass of Earth and is located in a mildly eccentric orbit which takes almost 38 days to complete. HD 11964 c was a possible planet discovered on the same day as HD 11964 b in 2005. HD 11964 c was first proposed in a paper published in 2007,[2] and finally confirmed with new data presented in a review of multi-planet systems which appeared on the arXiv preprint website in 2008.[1]
Some sources have used the designation "HD 11964 b" for this planet,[3][4] however in their review of the properties of multi-planet extrasolar planetary systems, the discovery team has stated that the correct designation for this planet is HD 11964 c and the reversed system was due to confusion related to private communications between various groups of astronomers.[1]
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