HD 70642 b

HD 70642 b is an exoplanet orbiting the star HD 70642 at a distance of 3.23 AU, taking 5.66 years to complete an orbit. This planet may have systems of moons like Jupiter.^[1] This planet was discovered on July 3, 2003. It is located about 95 light-years away in the constellation Puppis. In 2023, the inclination and true mass of HD 70642 b were determined via astrometry.^[2]

HD 70642 b

Discovery[1]
Discovered by	Carter et al.
Discovery site	Anglo-Australian Observatory
Discovery date	July 3, 2003
Detection method	Radial velocity (Anglo-Australian Telescope)
Orbital characteristics[2]
Semi-major axis	3.295±0.021 AU
Eccentricity	0.04+0.034 −0.027
Orbital period (sidereal)	2101+14 −13 d 5.751+0.038 −0.035 yr
Average orbital speed	17.06
Inclination	29.9°+2.6° −2.4° or 150.1°+2.4° −2.6°
Longitude of ascending node	60.7°+8.8° −8.6°
Time of periastron	2455918+358 −337
Argument of periastron	258°+51° −66°
Semi-amplitude	30.4 ± 1.3
Star	HD 70642
Physical characteristics[2]
Mass	3.9+0.29 −0.27 MJ

See also

• 55 Cancri d
• Gliese 777 b
• HD 28185 b
• Mu Arae e
• Pi Mensae b