Dust disk around Iota Horologii.
Iota Horologii, also known as HR 810, is a Sun-like star with an exoplanet that moves in the most Earth-like orbit yet found. Iota Horologii has a surface temperature of 6150 K and a mass 1.25 times that of the Sun. It is believed to be about 625 million years old and is more metal-rich than the Sun by about 50%. It has drifted to its present position from the Hyades cluster where it formed.
|Distance||50.5 light-years (15.5 pc)|
|Spectral type||G0 V|
|Semi-major axis||0.93 AU (140 million km, 86 million miles)|
|Orbital period||320 days|
|Discovery||1999, ESO Coudé Échelle Spectrometer, La Silla|
|Method of discovery||radial velocity|