HD 66428 b

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HD 66428 b
Extrasolar planet List of extrasolar planets
Parent star
Star HD 66428
Constellation Monoceros
Right ascension (α) 08h 03m 28.6652s
Declination (δ) –01° 09′ 45.752″
Distance 179 ± 12.4 ly
(55 ± 3.8 pc)
Spectral type G5
Orbital elements
Semimajor axis (a) 3.18 ± 0.19 AU
(476 Gm)
Periastron (q) 1.70 AU
(254 Gm)
Apastron (Q) 4.66 AU
(697 Gm)
Eccentricity (e) 0.465 ± 0.03
Orbital period (P) 1973 ± 31 d
(5.402 y)
Orbital speed (υ) 17.6 km/s
Argument of
periastron
(ω) 152.9 ± 3.9°
Time of periastron (T0) 2,412,139 ± 16 JD
Semi-amplitude (K) 48.3 ± 2.7 m/s
Physical characteristics
Minimum mass (m sin i) 2.82 MJ
Discovery information
Discovery date July 15, 2006
Discoverer(s) Butler et al.[1]
Discovery method Radial velocity
Discovery site United States California
Discovery status Published[1]

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 MJ 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]

See also[edit]

References[edit]

  1. ^ a b c 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. 

External links[edit]

Coordinates: Sky map 08h 03m 28.6652s, −01° 09′ 45.752″