HD 11964 c

Last updated
HD 11964 c
Discovery
Discovered by Butler et al.
Discovery site California, United States
Discovery date5 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 constellation of Cetus. 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]

    References

    1. 1 2 3 4 5 6 7 8 Wright, J. T.; et al. (2009). "Ten New and Updated Multi-planet Systems, and a Survey of Exoplanetary Systems". The Astrophysical Journal. 693 (2): 1084–1099. arXiv: 0812.1582 . Bibcode:2009ApJ...693.1084W. doi:10.1088/0004-637X/693/2/1084. S2CID   18169921.
    2. ↑ Wright, J.T.; et al. (2007). "Four New Exoplanets and Hints of Additional Substellar Companions to Exoplanet Host Stars". The Astrophysical Journal. 657 (1): 533–545. arXiv: astro-ph/0611658 . Bibcode:2007ApJ...657..533W. doi:10.1086/510553. S2CID   35682784.
    3. ↑ Raghavan, D.; et al. (2006). "Two Suns in The Sky: Stellar Multiplicity in Exoplanet Systems". The Astrophysical Journal. 646 (1): 523–542. arXiv: astro-ph/0603836 . Bibcode:2006ApJ...646..523R. doi:10.1086/504823. S2CID   5669768. Archived from the original on 2020-04-28. Retrieved 2009-03-16.
    4. ↑ Schneider, J. "Notes for planet HD 11964 b". Extrasolar Planets Encyclopaedia . Retrieved 2008-12-15.


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