HD 222582

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**HD 222582**
Observation data Epoch J2000
HD 222582
Constellation (pronunciation)	Aquarius
Right ascension	23^h 41^m 51.5299^s
Declination	-05° 59′ 08.726″
Apparent magnitude (V)	7.7
Characteristics
Spectral type	G5
Astrometry
Radial velocity (R_v)	11.5 km/s
Proper motion (μ)	RA: -145.41 mas/yr Dec.: -111.1 mas/yr
Parallax (π)	23.84 ± 1.11 mas
Distance	137 ± 6 ly (42 ± 2 pc)
Absolute magnitude (M_V)	8.3
Details
Mass	1 M_☉
Radius	1.17 R_☉
Temperature	5770 K
Metallicity	?
Rotation	?
Age	10,000 million years
Other designations
NLTT 57682, HIP 116906, SPOCS 1030, BD-06° 6262, HD 222582, PPM 207851, TYC 5258-491-1, GC 32912, HERZ 3207, SAO 146849, uvby98 100222582, GSC 05258-00491, HIC 116906, YZ 96 8374.
Database references
SIMBAD	data
Planet
Database references
SIMBAD	data

HD 222582 is a magnitude 7.7 star in the constellation Aquarius. In 1999, the superjovian planet was announced orbiting the star by Steven Vogt.

Aquarius Constellation

[edit] HD 222582 b

**HD 222582 b**
Orbital elements

Semi-major axis a:	1.35 AU
Eccentricity e:	0.76
Orbital period P:	572 d
Inclination i:	?°
Angular distance θ:	32 mas
Longitude of periastron ω:	293°
Time of periastron τ:	2,450,174.8 JD
Semi-amplitude K:	276.6 m/s
Physical characteristics
Mass:	>5.4 M_J
Radius:	? R_J
Density:	? kg/m³
Gravity:	? g
Temperature:	? K
Discovery
Discovery date:	1999
Discovery site:
Detection method(s):	radial velocity
Discoverer(s):	Vogt et al.
Other catalogue

HD 222582 b is a massive planet 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 planet.