| Extrasolar planet | List of extrasolar planets | |
|---|---|---|
| Parent star | ||
| Star | Gliese 849 | |
| Constellation | Aquarius | |
| Right ascension | (α) | 22h 9m 40.3460s |
| Declination | (δ) | –4° 38′ 26.624″ |
| Apparent magnitude | (mV) | 10.42 |
| Distance | 28.618 ± 0.7 ly (8.774 ± 0.2 pc) |
|
| Spectral type | M3.5V | |
| Orbital elements | ||
| Semimajor axis | (a) | 2.35 AU |
| Periastron | (q) | 2.20 AU |
| Apastron | (Q) | 2.50 AU |
| Eccentricity | (e) | 0.06 ± 0.09 |
| Orbital period | (P) | 1890 ± 130 d (5.17 y) |
| Argument of periastron |
(ω) | 351 ± 60° |
| Time of periastron | (T0) | 2411462 ± 550 JD |
| Semi-amplitude | (K) | 22 ± 4 m/s |
| Physical characteristics | ||
| Minimum mass | (m sin i) | 0.82 MJ (260 M⊕) |
| Discovery information | ||
| Discovery date | August 2006 | |
| Discoverer(s) | California and Carnegie Planet Search | |
| Detection method | radial velocity | |
| Discovery site | W. M. Keck Observatory USA |
|
| Discovery status | Published | |
| Database references | ||
| Extrasolar Planets Encyclopaedia |
data | |
| SIMBAD | data | |
Gliese 849 b is an extrasolar planet approximately 29 light years away in the constellation of Aquarius. It is the first long-period Jupiter-like planet discovered around a red dwarf star, announced in August 2006 by the California and Carnegie Planet Search team using the radial velocity technique. The previously longest-period Jupiter-like planet around a red dwarf star was Gliese 876 b. However, there are two disproven longer period Jupiter-like planets around Lalande 21185. There are indication of a possible second companion. The planet's mass is less than that of Jupiter, though only the minimum mass is known. The distance of the planet is 2.35 AU and it takes 1890 days to revolve in a circular orbit.[1]
Coordinates: 22h 09m 40.3460s, −4° 38′ 26.624″
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