Gliese 832 b
| Exoplanet | List of exoplanets | |
|---|---|---|
| Parent star | ||
| Star | Gliese 832 | |
| Constellation | Grus | |
| Right ascension | (α) | 21h 33m 33.9752s |
| Declination | (δ) | –49° 00′ 32.422″ |
| Distance | 16.10 ly (4.938 pc) | |
| Spectral type | M1.5V | |
| Orbital elements | ||
| Semi-major axis | (a) | 3.4 ± 0.4 AU (510 Gm) |
| 690 mas | ||
| Periastron | (q) | 3.0 AU (450 Gm) |
| Apastron | (Q) | 3.8 AU (570 Gm) |
| Eccentricity | (e) | 0.12 ± 0.11 |
| Orbital period | (P) | 3416 ± 131 d (9.352 y) |
| Orbital speed | (υ) | 10.9 km/s |
| Time of periastron | (T0) | 1211 ± 353 JD |
| Physical characteristics | ||
| Minimum mass | (m sin i) | 0.64 ± 0.06 MJ |
| Discovery information | ||
| Discovery date | September 1, 2008 | |
| Discoverer(s) | Bailey et al. | |
| Discovery method | Doppler spectroscopy | |
| Discovery site | Anglo-Australian Observatory | |
| Discovery status | Published | |
| Database references | ||
| Extrasolar Planets Encyclopaedia | data | |
| SIMBAD | data | |
| Exoplanet Archive | data | |
| Open Exoplanet Catalogue | data | |
Gliese 832 b (Gl 832 b or GJ 832 b) is an extrasolar planet located approximately 16 light-years from our sun in the constellation of Grus, orbiting the red dwarf star Gliese 832.[1]
Orbit
The planet takes 3416 days to revolve at an orbital distance of 3.4 AU; this is the longest-period Jupiter-like planet orbiting a red dwarf.[2] The brightness of the faint parent star at that distance corresponds to the brightness of the Sun from 80AU (or a 100 times brighter than a full Moon as seen from Earth).
Discovery
The planet was discovered in the Anglo-Australian Observatory on September 1, 2008.
References
- ↑ Wall, Mike (June 25, 2014). "Nearby Alien Planet May Be Capable of Supporting Life". Space.com. Retrieved July 1, 2014.
- ↑ Bailey, Jeremy; et al. (2008). "A Jupiter-like Planet Orbiting the Nearby M Dwarf GJ832". The Astrophysical Journal 690: 743–747. arXiv:0809.0172. Bibcode:2009ApJ...690..743B. doi:10.1088/0004-637X/690/1/743.
External links
- "GJ 832". Exoplanets.
Coordinates: 
21h 33m 33.9752s, −49° 00′ 32.422″
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