Extrasolar planet | List of extrasolar planets | |
---|---|---|
Parent star | ||
Star | HD 222582 | |
Constellation | Aquarius | |
Right ascension | (α) | 23h 41m 51.5299s |
Declination | (δ) | –05° 59′ 08.726″ |
Distance | 136.8 ly (41.95 pc) |
|
Spectral type | G5V | |
Orbital elements | ||
Semimajor axis | (a) | 1.35 AU (202 Gm) |
Periastron | (q) | 0.327 AU (48.9 Gm) |
Apastron | (Q) | 2.37 AU (355 Gm) |
Eccentricity | (e) | 0.76 |
Orbital period | (P) | 572 d (1.57 y) |
Orbital speed | (υ) | 25.7 km/s |
Argument of periastron |
(ω) | 293° |
Time of periastron | (T0) | 2,450,174.8 JD |
Semi-amplitude | (K) | 276.6 m/s |
Physical characteristics | ||
Minimum mass | (m sin i) | 7.75 MJ |
Discovery information | ||
Discovery date | 1999 | |
Discoverer(s) | Vogt et al. | |
Detection method | radial velocity | |
Discovery site | California and Carnegie Planet Search USA |
|
Discovery status | Published | |
Database references | ||
Extrasolar Planets Encyclopaedia |
data | |
SIMBAD | data |
HD 222582 b is an extrasolar planet over 7 times the mass of Jupiter orbiting the star HD 222582. The orbital period is 572 days and orbits at a semimajor axis of 1.35 AU in one of the most eccentric orbits of any known planets.