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Exoplanet Comparison OGLE2-TR-L9 b.png
Size comparison of OGLE2-TR-L9b with Jupiter.
Discovered byMeta de Hoon
Remco van der Burg
Francis Vuijsje
Discovery dateDecember 2, 2008
Orbital characteristics
2.4855335 ± 0.0000007 d
59.6528 h
Physical characteristics
Mean radius
1.61 ± 0.04 RJ
Mass4.5 ± 1.5 MJ

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" (PDF). Astronomy and Astrophysics. 497 (2): 545–550. arXiv:0812.0599. 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″