Gliese 179 b
| Extrasolar planet | List of extrasolar planets | |
|---|---|---|
| Parent star | ||
| Star | Gliese 179 | |
| Constellation | Orion | |
| Right ascension | (α) | 04h 52m 05.73s[1] |
| Declination | (δ) | +06° 28′ 35.5″[1] |
| Apparent magnitude | (mV) | 11.96 |
| Distance | 40±2[1] ly (12.3±0.6[1] pc) | |
| Spectral type | M3.5 | |
| Mass | (m) | 0.357±0.030 M☉ |
| Radius | (r) | 0.38±0.02 R☉ |
| Temperature | (T) | 3370±100 K |
| Metallicity | [Fe/H] | 0.30±0.10 |
| Orbital elements | ||
| Semimajor axis | (a) | 2.41±0.04 AU (~361 Gm) |
| ~199 mas | ||
| Periastron | (q) | 1.90±0.22 AU (~286 Gm) |
| Apastron | (Q) | 2.92±0.24 AU (~436 Gm) |
| Eccentricity | (e) | 0.21±0.08 |
| Orbital period | (P) | 2288±59 d (~6.26 y) |
| Orbital speed | (υ) | 11.5±0.5 km/s |
| Argument of periastron |
(ω) | 153±24° |
| Time of periastron | (T0) | 25140±104 JD |
| Semi-amplitude | (K) | 33.9±6.6 m/s |
| Physical characteristics | ||
| Minimum mass | (m sin i) | 0.82±0.07 MJ |
| Discovery information | ||
| Discovery date | November 13, 2009 | |
| Discoverer(s) | Howard et al. | |
| Discovery method | Radial velocity | |
| Discovery site | Keck Observatory | |
| Discovery status | Submitted[2] | |
| Other designations | ||
| HIP 22627 b | ||
| Database references | ||
| Extrasolar Planets Encyclopaedia | data | |
| SIMBAD | data | |
| Exoplanet Archive | data | |
| Open Exoplanet Catalogue | data | |
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 a little bit less than Jupiter and it orbits at 2.41 AU or 361 Gm 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 radial velocity method from spectrograph taken at Keck Observatory on November 13, 2009.
See also
Other planets that were discovered or confirmed on November 13, 2009:
- HD 34445 b
- HD 126614 Ab
- HD 24496 Ab
- HD 13931 b
- QS Virginis b
Related giant planets around red dwarfs:
References
- ↑ 1.0 1.1 1.2 1.3 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Vizier catalog entry
- ↑ 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.
- Jean Schneider (2011). "Notes for Planet Gl 179 b". Extrasolar Planets Encyclopaedia. Retrieved 29 September 2011.
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Coordinates: 
04h 52m 05.7273s, +06° 28′ 35.542″