HD 11964 b

HD 11964 b is an extrasolar planet, a gas giant like Jupiter approximately 110 light-years away in the constellation of Cetus. The planet orbits the yellow subgiant star HD 11964 in a nearly-circular orbit, taking over 5 years to complete a revolution around the star at a distance of 3.34 astronomical units.[1]

HD 11964 b

Discovery
Discovered by	Butler et al.
Discovery site	California,  United States
Discovery date	7 August 2005
Detection method	Doppler spectroscopy
Orbital characteristics
Semi-major axis	3.34 ± 0.4 AU (500,000,000 ± 60,000,000 km)[1]
Eccentricity	0.06 ± 0.2[1]
Orbital period	2110 ± 70[1] d
Time of periastron	2,454,170 ± 380[1]
Semi-amplitude	9.41 ± 0.39[1]
Star	HD 11964

The planet was discovered in 2005 and published as part of the Catalog of Nearby Exoplanets under the designation HD 11964 b.[2] However, since that time there has been confusion as to the designations of the planets in the HD 11964 system, leading to some sources designating this planet as "HD 11964 c".[3][4] In a recent 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 b.[1]

References

1. 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.
2. Butler, R. P.; et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal. 646 (1): 505–522. arXiv:astro-ph/0607493. Bibcode:2006ApJ...646..505B. doi:10.1086/504701.
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.
4. Schneider, J. "Notes for planet HD 11964 c". The Extrasolar Planets Encyclopaedia. Retrieved 2008-12-15.