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Exoplanet List of exoplanets
Exoplanet Comparison OGLE-TR-56 b.png
Size comparison of OGLE-TR-56b with Jupiter.
Parent star
Star OGLE-TR-56
Constellation Sagittarius
Right ascension (α) 17h 56m 35.51s[1]
Declination (δ) –29° 32′ 21.2″[1]
Distance ~4,900 ly
(~1,500[2] 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.[3]
Discovery method Transit
Other detection methods Radial velocity
Discovery status Published[3]
Database references
Extrasolar Planets
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[1] by the OGLE project using the transit method and confirmed on January 4, 2003 by the Doppler technique.[2] The period of this confirmed planet was the shortest until the confirmed discovery of WASP-12b on April 1, 2008.[4] 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 radial velocity trend of OGLE-TR-56, caused by the presence of OGLE-TR-56 b.

The planet is theorized to have iron rain.[5]

See also[edit]


External links[edit]

Media related to OGLE-TR-56 b at Wikimedia Commons

Coordinates: Sky map 17h 56m 35.51s, −29° 32′ 21.2″