ARICNS data Constellation Coma Berenices | Magnitude 7.3 Apparent magnitude (V) 7.3 | |
Similar HD 114762 b, 70 Virginis, 16 Cygni Bb, HD 108874 | ||
HD 114762 is a binary star system approximately 132 light-years (40.6 pc) away in the constellation Coma Berenices. It consists of a yellow-white F-type main-sequence star (HD 114762) and a red or brown dwarf companion (HD 114762 B) approximately 130 AU distant. Both are low-metal subdwarfs. A telescope or strong binoculars are needed to view the primary. HD 114762 had been used by scientists as a "standard star", one whose radial velocity is well established, but with the discovery of exoplanet HD 114762 b its usefulness as a standard has been called into question.
Planetary system
In 1989, a substellar object, HD 114762 b, was found orbiting HD 114762 by Latham, et al., using Doppler spectroscopy, but its existence was not confirmed until 1991 by Cochran, et al. By 2012, its status as an exoplanet was confirmed. It has a mass of at least 11 MJ, though this will be refined as its inclination is determined. Its orbital distance and revolution is similar to that of Mercury, though it has twice the eccentricity.