HD 70642 b

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HD 70642 b
Extrasolar planet List of extrasolar planets
Parent star
Star HD 70642
Constellation Puppis
Right ascension (α) 08h 21m 28.1361s
Declination (δ) −39° 42′ 19.474″
Distance 93.8 ly (28.76 pc)
Spectral type G5V
Orbital elements
Semimajor axis (a) 3.232 AU
Eccentricity (e) 0.034 ± 0.043
Orbital period (P) 2068 ± 39 d (5.662 y)
Angular distance (θ) 149.885 mas
Longitude of
periastron
(ω) 205°
Time of periastron (T0) 2,451,350 ± 380 JD
Semi-amplitude (K) 30.4 ± 1.3 m/s
Physical characteristics
Mass (m) >1.97 ± 0.06 MJ
Radius (r) 1.01 (Estimated) RJ
Discovery information
Discovery date July 3, 2003
Discoverer(s) Carter et al.
Detection method Radial velocity
Discovery site Australia
Discovery status Published

HD 70642 b is a planet that orbits the star HD 70642 at 3.23 AU distance and takes 5.66 years to revolve. This planet is a “Jupiter-twin” because it is very similar to Jupiter in our Solar System, though only three-fifths the distance, twice as massive, and two-thirds as eccentric. This planet may have systems of moons like Jupiter. This planet was discovered on July 3, 2003.

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