HD 192310 b explained

HD 192310 b
Discovery Site:	La Silla Observatory
Discovery Method:	Radial velocity (HARPS)
Semimajor:	0.32
Period:	74.7 d
Star:	HD 192310
Mean Radius:	0.381
Mass:	16.9
Eccentricity:	0.13

HD 192310 b is an exoplanet orbiting the star HD 192310 (HR 7722).^[1] It orbits its parent star with a semimajor axis of 0.32 ± 0.005 AU, an eccentricity of 0.13 ± 0.04. and an orbital period of 74.72 days.^[2]

The Neptune-sized planet has at least 21 times the mass of Earth^[3] and 3 to 4 times its diameter.

HD 192310 b was discovered on 1 November 2010 and lies within the inner edge of the habitable zone of HD 192310.

See also

• List of star systems within 25–30 light-years

Notes and References

1. The HARPS search for Earth-like planets in the habitable zone: I – Very low-mass planets around HD20794, HD85512 and HD192310 . F. . Pepe . etal . 2011 . 1108.3447. 2011A&A...534A..58P . 10.1051/0004-6361/201117055 . 534 . Astronomy & Astrophysics . A58. 15088852 .
2. Open Exoplanet Catalogue, Gl 785b
3. Andrew W. Howard, The NASA-UC Eta-Earth Program: III. A Super-Earth orbiting HD 97658 and a Neptune-mass planet orbiting Gl 785, et al.