The Planet-host Star Iota Horologii
Using HARPS on ESO's 3.6-m telescope at La Silla, astronomers were able to study in great detail the star Iota Horologii, known to harbour a giant planet, and make a very precise portrait of it: its temperature is 6150 K, its mass is 1.25 times that of the Sun, and its age is 625 million years. Moreover, the star is found to be more metal-rich than the Sun by about 50%. This means the star must have drifted from the Hyades cluster where it formed.
Credit:
Digital Sky Survey/VirGO.
About the Image
| Id: | eso0809a |
| Type: | Observation |
| Release date: | 15 April 2008 |
| Related releases: | eso0809 |
| Size: | 800 x 774 px |
About the Object
| Name: | Iota Horologii |
| Type: | • Milky Way : Star • Milky Way : Star : Circumstellar Material : Planetary System |
| Distance: | 55 light years |
| Constellation: | Horologium |
Coordinates
| Position (RA): | 2 41 58.21 |
| Position (Dec): | -50° 55' 41.97" |
| Field of view: | 41.78 x 40.41 arcminutes |
| Orientation: | North is 1.6° right of vertical |
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Colours & filters
| Band | Telescope |
| Optical | ESO 3.6-metre telescope |
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