OGLE 2003-BLG-235/MOA 2003-BLG-53: A planetary microlensing event
  We present observations of the unusual microlensing event OGLE 2003-BLG-235/MOA 2003-BLG-53. In this event a short duration (~7 days) low amplitude deviation in the light curve due a single lens profile was observed in both the MOA and OGLE survey observations. We find that the observed features of the light curve can only be reproduced using a binary microlensing model with an extreme (planetary) mass ratio of 0.0039 +/- (11, 07) for the lensing system. If the lens system comprises a main sequence primary, we infer that the secondary is a planet of about 1.5 Jupiter masses with an orbital radius of ~3 AU. 
I.A. Bond, A. Udalski, M. Jaroszynski, N.J. Rattenbury, B. Paczynski,   I. Soszynski, L. Wyrzykowski, M.K. Szymanski, M. Kub...