OGLE-TR-113b
OGLE-TR-113b is an extrasolar planet orbiting the star OGLE-TR-113.
Size comparison of OGLE-TR-113b with Jupiter | |
| Discovery | |
|---|---|
| Discovered by | Konacki et al. |
| Discovery site | Poland |
| Discovery date | transit found in 2002, proved to be a planet on 14 April 2004 |
| Transit | |
| Orbital characteristics | |
| 0.0229 ± 0.0002 AU (3,426,000 ± 30,000 km) | |
| Eccentricity | 0 |
| 1.4324757 ± 0.0000013 d | |
| Inclination | 88.8 |
| Star | OGLE-TR-113 |
| Physical characteristics | |
Mean radius | 1.09 ±0.03 RJ |
| Mass | 1.32 ±0.19 MJ |
In 2002 the Optical Gravitational Lensing Experiment (OGLE) detected periodic dimming in the star's light curve indicating a transiting, planetary-sized object. Since low-mass red dwarfs and brown dwarfs may mimic a planet, radial velocity measurements were necessary to calculate the mass of the body. In 2004, the object was proved to be a new transiting extrasolar planet.
The planet has a mass 1.32 times that of Jupiter. Since the planet's inclination is known, the value is exact. It orbits the star (OGLE-TR-113) in an extremely close orbit, even closer than the famous planets 51 Pegasi b and HD 209458 b. The planet races around the star every 1.43 days. The radius of the planet is only 9% larger than Jupiter's, despite the heating effect by the star. Planets of its kind are sometimes called "super-hot Jupiters".