Gliese 179 b

Gliese 179 b

Discovery[1]
Discovered by	Howard et al.
Discovery site	Keck Observatory
Discovery date	November 13, 2009
Detection method	Radial velocity
Orbital characteristics[2]
Semi-major axis	2.424+0.071 −0.075 AU
Eccentricity	0.179+0.048 −0.044
Orbital period (sidereal)	2303+34 −31 d 6.306+0.094 −0.086 yr
Inclination	61°+16° −13° or 119°+13° −16°
Longitude of ascending node	62°+99° −44°
Time of periastron	2457301+125 −150
Argument of periastron	129°+21° −19°
Semi-amplitude	33.9±6.6
Star	Gliese 179
Physical characteristics[2]
Mass	0.95+0.16 −0.11 MJ

Gliese 179 b (also known as HIP 22627 b) is an extrasolar planet which orbits the M-type main sequence star Gliese 179, located approximately 40 light years away in the constellation Orion. This planet has a minimum mass somewhat less than Jupiter and it orbits at 2.42 AU from the star with an eccentricity slightly less than Pluto. The planetary distance ranges from 1.90 to 2.92 AU. This planet was discovered by using the radial velocity method from spectrograph taken at Keck Observatory on November 13, 2009.^[1] In 2023, the inclination and true mass of Gliese 179 b were determined via astrometry.^[2]

See also

Other planets that were discovered or confirmed on November 13, 2009:

• HD 34445 b
• HD 126614 Ab
• HD 13931 b

Other giant planets around red dwarfs:

• HIP 79431 b
• Gliese 849 b
• Gliese 876 b
• Gliese 876 c
• Gliese 317 b
• Gliese 832 b

References

1. Howard, Andrew W.; et al. (2010). "The California Planet Survey. I. Four New Giant Exoplanets". The Astrophysical Journal. 721 (2): 1467–1481. arXiv:1003.3488. Bibcode:2010ApJ...721.1467H. doi:10.1088/0004-637X/721/2/1467. S2CID 14147776.
2. Xiao, Guang-Yao; Liu, Yu-Juan; et al. (March 2023). "The Masses of a Sample of Radial-Velocity Exoplanets with Astrometric Measurements". Research in Astronomy and Astrophysics. arXiv:2303.12409.

• Jean Schneider (2011). "Notes for Planet Gl 179 b". Extrasolar Planets Encyclopaedia. Archived from the original on 9 November 2011. Retrieved 29 September 2011.