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TrES-1

The yellow-orange star is orbited by a gaseous planet a bit bigger as Jupiter, which has but 75% of its mass. It is very close to its star (0.039 AU) and needs 3 days for one orbit.

On March 23. 2005 the planet's temperature was measured by the Spitzer Infrared Space Telescope: at least 1000 kelvin.

Constellation: Lyra
Distance: 512 light-years
Spectral class: K0
Visual magnitude: 11.79
Mass: 0.87 * Sun

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Graphic: Harvard-Smithsonian Center for Astrophysics

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