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Exoplanet List of exoplanets
Exoplanet Comparison OGLE2-TR-L9 b.png
Size comparison of OGLE2-TR-L9b with Jupiter.
Parent star
Star OGLE2-TR-L9
Constellation Carina
Right ascension (α) 11h 07m 55s
Declination (δ) –61° 08′ 46″
Distance 2935 ly
(900 pc)
Spectral type F3
Orbital elements
Orbital period (P) 2.4855335 ± 0.0000007 d
    (59.6528 h)
Time of transit (Tt) 2,454,492.79765 JD
Physical characteristics
Mass (m) 4.5 ± 1.5 MJ
Radius (r) 1.61 ± 0.04 RJ
Discovery information
Discovery date December 2, 2008
Discoverer(s) Meta de Hoon
Remco van der Burg
Francis Vuijsje
Discovery method Transit
Discovery status Published
Database references
Extrasolar Planets
Exoplanet Archive data
Open Exoplanet Catalogue data

OGLE2-TR-L9b is an extrasolar planet discovered by three undergraduate students from Leiden University, Netherlands. The planet is about 4.5 times as massive as Jupiter and is the first discovered planet orbiting a fast rotating hot star.[1]

Initially discovered while testing a method for investigating light fluctuations in the OGLE database, the planet's existence was later confirmed by follow up observations from the ESO's Very Large Telescope in Chile.[1]

See also[edit]


  1. ^ a b Snellen; Koppenhoefer, J.; Van Der Burg, R. F. J.; Dreizler, S.; Greiner, J.; De Hoon, M. D. J.; Husser, T. O.; Krühler, T.; Saglia, R. P.; Vuijsje, F. N. (2009). "OGLE2-TR-L9b: an exoplanet transiting a rapidly rotating F3 star". Astronomy and Astrophysics. 497 (2): 545–550. arXiv:0812.0599Freely accessible. Bibcode:2009A&A...497..545S. doi:10.1051/0004-6361/200810917. 

External links[edit]

Media related to OGLE2-TR-L9 b at Wikimedia Commons

Coordinates: Sky map 11h 07m 55s, −61° 08′ 46″