A

David

Darling

HD 222582

HD 22582

HD 222582 is a Sunlike star in the constellation Aquarius around which has been discovered a massive exoplanet in an orbit somewhat larger than that of Earth's around the Sun.

 

Host star
Distance 137 light-years (42 pc)
Spectral type G5 V
Apparent magnitude 7.70
Position R.A. 23h 41m 52s, Dec. -05° 59' 09"

 

Planet
Mass (Jupiter=1) 5.4
Semimajor axis 1.35 AU (202 million km, 126 million miles)
Orbital period 576 days
Eccentricity 0.0
Discovery 1999, SFSU Planet Search
Method radial velocity