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Gliese 179 b 
Summary
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]
| Discovery[1] | |
|---|---|
| Discovered by | Howard et al. |
| Discovery site | Keck Observatory |
| Discovery date | November 13, 2009 |
| Radial velocity | |
| Orbital characteristics[2] | |
| 2.424+0.071 −0.075 AU | |
| Eccentricity | 0.179+0.048 −0.044 |
| 2303+34 −31 d 6.306+0.094 −0.086 yr | |
| Inclination | 61°+16° −13° or 119°+13° −16° |
| 62°+99° −44° | |
| 2457301+125 −150 | |
| 129°+21° −19° | |
| Semi-amplitude | 33.9±6.6 |
| Star | Gliese 179 |
| Physical characteristics[2] | |
| Mass | 0.95+0.16 −0.11 MJ |
See also edit
Other planets that were discovered or confirmed on November 13, 2009:
Other giant planets around red dwarfs:
References edit
- ^ a b 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.
- ^ a b c 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.