HD 66428 b

HD 66428 b is a long-period jovian exoplanet located approximately 179.3 light-years away in the constellation of Monoceros. It has a mass of >2.82 M_J and takes 1973 days or 5.402 years to orbit around its solar-type star HD 66428. The average distance is 3.18 AU, about half the distance between Mars and Jupiter. This planet is a so-called eccentric Jupiter with an orbital eccentricity of 0.465. At periastron, the distance is 1.70 AU and at apastron, the distance is 4.66 AU.[1]

HD 66428 b

Discovery
Discovered by	Butler et al.[1]
Discovery site	California
Discovery date	July 15, 2006
Detection method	Radial velocity
Orbital characteristics
Semi-major axis	3.471±0.069 AU
Eccentricity	0.440±0.013[2]
Orbital period	2293.9±6.4[2] d
Time of periastron	2452278±16[2]
Argument of periastron	180.4±2.6[2]
Semi-amplitude	52.6±1.1[2]
Star	HD 66428

See also

• HD 70642 b

References

1. 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.
2. Feng, Y. Katherina; et al. (2015). "The California Planet Survey IV: A Planet Orbiting the Giant Star HD 145934 and Updates to Seven Systems with Long-period Planets". The Astrophysical Journal. 800. 22. arXiv:1501.00633. Bibcode:2015ApJ...800...22F. doi:10.1088/0004-637X/800/1/22.

External links

• "Notes for planet HD 66428 b". The Extrasolar Planets Encyclopaedia. Retrieved 2008-08-20.
• "HD 66428". Exoplanets. Archived from the original on 2009-11-25. Retrieved 2008-08-20.