CoRoT-9 b
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Exoplanet CoRoT-9 b |
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| Exoplanet CoRoT-9 b in front of its central star (artist's impression) |
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| Constellation | Snake |
| Position equinox : J2000.0 |
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| Right ascension | 18h 43m 09s |
| declination | + 06 ° 12 ′ 15 ″ |
| Orbit data | |
| Central star | CoRoT-9 |
| Major semi-axis | (0.407 ± 0.005) AU |
| eccentricity | (0.133 ± 0.04) |
| Period of circulation | (95.2738 ± 0.0014) days |
| Further data | |
| diameter | (0.94 ± 0.04) R J |
| Dimensions | (0.84 ± 0.07) M J |
| distance | 1500 ly 460 pc |
| Discovery method | Transit method |
| Inclination | > 89.9 deg |
| history | |
| discovery | COROT , CNES |
| Date of discovery | March 17, 2010 |
| Catalog names | |
| CoRoT-9 b | |
CoRoT-9 b is an exoplanet that accompanies the sun-like star CoRoT-9 in the constellation Snake around 1,500 light years away from Earth .
more details
The exoplanet is a gas giant similar in size to Jupiter and is believed to consist mainly of hydrogen and helium . The climate of the planet is considered Although moderate compared to most other extrasolar planets discovered so far as relative (between -20 and +160 degrees Celsius ), but is likely to life as we know it from the earth, be there impossible, since it around is a gas planet. The exoplanet orbits its central star at about the same distance as the planet Mercury orbits the sun and needs 95 earth days to orbit the central star . In view of the fact that most of the so-called Hot Jupiters known so far orbit their respective central star at an extremely short distance and therefore only need a few days for an orbit , the orbit time determined with CoRoT-9 b is very long.
Another special feature of CoRoT-9b is that it passes directly in front of its star from the Earth's line of sight, which made its discovery possible through the transit method . The discovery was made by the COROT research satellite . This enables the spectroscopic study of the atmosphere of an exoplanet of this type for the first time, which is why this planet was also called the Rosetta Stone for planetary research .
See also
literature
- HJ Deeg et al. : A transiting giant planet with a temperature between 250 K and 430 K . In: Nature . tape 464 , 2010, p. 384-387 , doi : 10.1038 / nature08856 .
Web links
- CoRoT-9 b (English) - EPE entry , March 17, 2010
- ESO: Precise measurement of a temperate exoplanet + animations for the first time - March 17th, 2010
- astronews.com: A relatively normal exoplanet - March 18, 2010
Individual evidence
- ↑ a b c d e f g h i Extrasolar Planets Encyclopaedia. (English)
- ↑ Une nouvelle découverte prometteuse pour CoRoT (French)
- ↑ New exoplanet in view - Article at DLR , March 17, 2010
- ↑ For the first time accurate measurement of a temperate exoplanet - ESO press release , March 17, 2010
- ↑ Exoplanet discovered: The new one in the constellation Snake resembles our planet - Article by Zeit Online , March 18, 2010