description CoRoT-9b Overview
Discovered in 2010 by the CoRoT satellite, CoRoT-9b is a gas giant notable for being the first transiting temperate exoplanet with a large orbit similar to the planet Mercury.
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How was CoRoT-9b discovered?
The CoRoT satellite discovered CoRoT-9b through its transit signal, and the planet was reported in 2010. Its relatively large orbit made the repeating transit harder to catch than the signal from a very close hot Jupiter.
Why is CoRoT-9b called a temperate exoplanet?
CoRoT-9b has a large orbit that gives it milder irradiation than the close-in hot Jupiters common in early transit surveys. It became notable as the first transiting temperate exoplanet described in this way.
How is CoRoT-9b's orbit similar to Mercury's?
CoRoT-9b follows a large orbit around its star that is broadly similar in scale to Mercury's orbit around the Sun. That makes it different from gas giants that circle their stars in only a few days.
Does CoRoT-9b have a solid surface?
No solid surface is expected because CoRoT-9b is a gas giant. The fact that it transits its star explains how it was detected, not that it has Earth-like ground.
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