HD 47186 b

HD 47186 b
Discovery
Discovered byBouchy et al.
Discovery siteChile La Silla Observatory
Discovery dateJune 16, 2008
Doppler spectroscopy
Orbital characteristics
Apastron0.052 AU (7,800,000 km)
Periastron0.048 AU (7,200,000 km)
0.050 AU (7,500,000 km)
Eccentricity0.038 ± 0.02
4.0845 ± 0.0002 d
130
2,454,562.77 ± 0.08
StarHD 47186

HD 47186 b is a “hot Neptuneextrasolar planet located approximately 123 light years away in the constellation of Canis Major, orbiting the star HD 47186. This planet has a minimum mass of 22.78 times that of Earth and orbits very close to the star at a similar distance from the star as 51 Pegasi b is from 51 Pegasi. As in consequence, it takes 4.0845 days to complete an orbit with an eccentricity of 0.038, which is similar to the 5.66 year-period planet HD 70642 b.