| OGLE2-TR-L9b | |
| Discoverer: | Meta de Hoon Remco van der Burg Francis Vuijsje |
| Discovered: | December 2, 2008 |
| Apsis: | astron |
| Period: | 2.4855335 ± 0.0000007 d 59.6528 h |
| Mean Radius: | 1.61 ± 0.04 |
| Mass: | 4.5 ± 1.5 |
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.