--------------------------------------------- PLANET ANOMALY UPDATE 2005 #0-8 (issued 5-Jun, 14:30 UT) --------------------------------------------- Further progress of the second caustic passage Dear Colleagues, PLANET data taken on event OGLE 2005-BLG-018 with the Danish 1.54m at ESO LaSilla, the Canopus 1.0m and the Perth 0.6m, OGLE data from the Warsaw 1.3m at Las Campanas and MicroFUN data from the CTIO 1.3m consistently show that the predicted second caustic passage is in progress. We find that both the parallax resulting from the Earth's revolution around the Sun and the orbital motion of the lens binary significantly affect the light curve. A corresponding model that provides a reasonable fit to the data did not require significant modification since the source re-entered the caustic. If the chosen parameters are approximately correct, the light curve will reach a peak around HJD=2453528.93 (7-Jun, 10:20 UT) and then fall at an increasing rate until the trailing limb of the source exits the caustic at about HJD=2453531.88 (10-Jun, 9:05 UT). We would like to stress that observations around an expected inflection point near HJD=2453527.90 (6-Jun, 9:35 UT) can be even more valuable for measuring the stellar brightness profile near the limb than those in the vicinity of caustic entries or exits. A light curve showing our model prediction is available on our webpage. Event: OGLE 2005-BLG-018 RA (J2000): 17:51:23.53 Dec (J2000): -29:39:27.8 The baseline I magnitude reported by the OGLE team is 15.448. For further information: PLANET: http://planet.iap.fr OGLE: http://www.astrouw.edu.pl/~ftp/ogle/ MicroFUN: http://www.astronomy.ohio-state.edu/~microfun/ -------------- On behalf of the PLANET collaboration Martin Dominik Pascal Fouque %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% If you prefer not to receive further PLANET Anomaly Alerts, please send an e-mail to planet@iap.fr.