COROT-Exo-1b
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| Extrasolar planet | List of extrasolar planets | ||
|---|---|---|---|
| Parent star | |||
| Star | COROT-Exo-1 | ||
| Constellation | Monoceros | ||
| Right ascension | (α) | 6h 48m 19.17s[1] | |
| Declination | (δ) | −3° 06′ 07.78″[1] | |
| Distance | 1560 ly (480 pc) | ||
| Spectral type | G0V[1] | ||
| Orbital elements | |||
| Semimajor axis | (a) | 0.025 ± 0.001[1][2] AU | |
| Eccentricity | (e) | 0 (assumed)[1] | |
| Orbital period | (P) | 1.5089557 ± 0.0000064[1] d | |
| Inclination | (i) | 85.1 ± 0.5[1]° | |
| Time of transit | (Tt) | 2454159.4532 ± 0.0001[1] JD | |
| Physical characteristics | |||
| Mass | (m) | 1.03 ± 0.12[1] MJ | |
| Radius | (r) | 1.49 ± 0.08[1] RJ | |
| Density | (ρ) | 380 ± 50[1] kg/m3 | |
| Surface gravity | (g) | 11.5[3] m/s² | |
| Temperature | (T) | 1898 ± 50[1] K | |
| Discovery information | |||
| Discovery date | 2007-05-01, announced 2007-05-03 |
||
| Discoverer(s) | COROT mission | ||
| Detection method | Transit method | ||
| Discovery site | Earth's orbit | ||
| Discovery status | Confirmed | ||
| Planet | Jupiter |
|---|---|
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COROT-Exo-1b is the first extrasolar planet to be detected by the French-led COROT Mission, in May 2007. It is about 1,560 light years away in the constellation Monoceros and orbits a yellow dwarf star.
The planet, one of the largest ever known is an enormous hot jupiter, about 1.49 times the radius of Jupiter and approximately 1.03 times as massive, based on ground observations of the star. Its huge size is due to its low density combined with the intense heating of its parent star causing the outer layers of the atmosphere to bloat.
COROT-exo-1b orbits its star approximately once every 1.5 days, which would make it an extremely hot planet: the discoverers estimate around 1900 K.
[edit] References
- ^ a b c d e f g h i j k l Barge, P.; Baglin, A.; Auvergne, M.; Rauer, H.; Léger, A.; Schneider, J.; Pont, F.; Aigrain, S.; Almenara, J.-M.; Alonso, R.; Barbieri, M.; Bordé, P.; Bouchy, F.; Deeg, H. J.; La Reza, De; Deleuil, M.; Dvorak, R.; Erikson, A.; Fridlund, M.; Gillon, M.; Gondoin, P.; Guillot, T.; Hatzes, A.; Hebrard, G.; Jorda, L.; Kabath, P.; Lammer, H.; Llebaria, A.; Loeillet, B.; Magain, P.; Mazeh, T.; Moutou, C.; Ollivier, M.; Pätzold, M.; Queloz, D.; Rouan, D.; Shporer, A.; Wuchterl, G. (2008). "Transiting exoplanets from the CoRoT space mission. I. CoRoT-Exo-1b: a low-density short-period planet around a G0V star". Astronomy and Astrophysics 482 (3): L17–L20.
- ^ The paper gives the semimajor axis as 4.92 ± 0.08 times the radius of the star, which is estimated at 1.11 ± 0.05 solar radii
- ^ Calculated using Newtonian gravity:
[edit] External links
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