OGLE-TR-113b

OGLE-TR-113b is an extrasolar planet orbiting the star OGLE-TR-113.

OGLE-TR-113b

Size comparison of OGLE-TR-113b with Jupiter
Discovery
Discovered by	Konacki et al.[1]
Discovery site	Poland[1]
Discovery date	transit found in 2002, proved to be a planet on 14 April 2004[1]
Detection method	Transit[1]
Orbital characteristics
Semi-major axis	0.0229 ± 0.0002 AU (3,426,000 ± 30,000 km)[2]
Eccentricity	0[2]
Orbital period (sidereal)	1.4324757 ± 0.0000013[2] d
Inclination	88.8[2]
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.^[3] 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.^[1]

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".^[2]

See also

• OGLE-TR-132b
• List of extrasolar planets
• OGLE-TR-10b
• OGLE-TR-111b
• OGLE-TR-56b
• OGLE2-TR-L9b