OGLE-TR-56b
| Exoplanet | List of exoplanets | |
|---|---|---|
 |
||
| Parent star | ||
| Star | OGLE-TR-56 | |
| Constellation | Sagittarius | |
| Right ascension | (α) | 17h 56m 35.51s |
| Declination | (δ) | –29° 32′ 21.2″ |
| Distance | ~4,900 ly (~1,500 pc) |
|
| Spectral type | G? | |
| Orbital elements | ||
| Semi-major axis | (a) | 0.0225 ± 0.0004 AU (3.37 Gm) |
| Periastron | (q) | 0.0225 AU (3.37 Gm) |
| Apastron | (Q) | 0.0225 AU (3.37 Gm) |
| Eccentricity | (e) | 0 |
| Orbital period | (P) | 1.211909 ± 0.000001 d |
| (29.08582 h) | ||
| Orbital speed | (υ) | 203 km/s |
| Inclination | (i) | 78.8 ± 0.5° |
| Time of transit | (Tt) | 3936.598 ± 0.001 JD |
| Physical characteristics | ||
| Mass | (m) | 1.29 ± 0.12 MJ |
| Radius | (r) | 1.30 ± 0.05 RJ |
| Density | (ρ) | 779 kg m−3 |
| Surface gravity | (g) | 19.8 m/s² (2.02 g) |
| Temperature | (T) | ~1973 |
| Discovery information | ||
| Discovery date | 3 November 2002 confirmed: 4 January 2003 |
|
| Discoverer(s) | Konacki et al. | |
| Discovery method | Transit | |
| Other detection methods | Radial velocity | |
| Discovery status | Published | |
| Database references | ||
| Extrasolar Planets Encyclopaedia |
data | |
| SIMBAD | data | |
| Exoplanet Archive | data | |
| Open Exoplanet Catalogue | data | |
OGLE-TR-56b is an extrasolar planet located approximately 1500 parsecs away in the constellation of Sagittarius, orbiting the star OGLE-TR-56. This planet was discovered on November 3, 2002 by the OGLE project using the transit method and confirmed on January 4, 2003 by the Doppler technique. The period of this confirmed planet was the shortest until the confirmed discovery of WASP-12b on April 1, 2008. The short period and proximity of the OGLE-TR-56 b to its host mean it belongs to a class of objects known as hot Jupiters.
The planet is theorized to have iron rain.
Coordinates: 
17h 56m 35.51s, −29° 32′ 21.2″
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