HD 125612 d

HD 125612 d

Discovery
Discovered by	Lo Curto et al.
Discovery site	La Silla Observatory
Discovery date	October 19, 2009
Detection method	Radial velocity (HARPS)
Orbital characteristics[1]
Semi-major axis	3.982+0.159 −0.174 AU
Eccentricity	0.115±0.012
Orbital period (sidereal)	7.728 ± 0.04 years (2,823 ± 15 d)
Inclination	88.195°+16.306° −15.980°
Longitude of ascending node	266.997°+22.666° −22.900°
Time of periastron	2452663.845+3.730 −3.324
Argument of periastron	315.896°+6.522° −6.555°
Semi-amplitude	100.067+1.277 −1.286 m/s
Star	HD 125612
Physical characteristics[1]
Mass	7.178+0.932 −0.445 MJ

HD 125612 d is an extrasolar planet which orbits the G-type main sequence star HD 125612, located approximately 172 light years away in the constellation Virgo. The discovery of this planet was announced by the HARPS team on October 19, 2009, together with 31 other planets, including HD 125612 c.^[2]

In 2022, the true mass and inclination of HD 125612 d were measured via astrometry.^[1]

References

1. Feng, Fabo; Butler, R. Paul; et al. (August 2022). "3D Selection of 167 Substellar Companions to Nearby Stars". The Astrophysical Journal Supplement Series. 262 (21): 21. arXiv:2208.12720. Bibcode:2022ApJS..262...21F. doi:10.3847/1538-4365/ac7e57. S2CID 251864022.
2. "32 New Exoplanets Found" (Press release). European Southern Observatory. 2009-10-19. Retrieved 2018-12-22.