--------------------------------------------- PLANET ANOMALY UPDATE 2005 #0-6 (issued 1-Jun, 9:15 UT) --------------------------------------------- Caustic re-entry expected soon Dear Colleagues, PLANET data taken with the Danish 1.54m at ESO LaSilla, the Perth 0.6m and the Canopus 1.0m near Hobart, in agreement with OGLE data indicate that the source has exited the caustic before HJD=2453516.664 (26-May, 3:57 UT) and remained outside until now. For a proper interpretation of the light curve, both the annual parallax resulting from the revolution of the Earth around the Sun, and the orbital motion of the stellar binary comprising the lens have to be taken into account. Since both of these effects can locally cause similar deviations, it is not easy to find their true combination, resulting in some uncertainty for the prediction of the expected re-entry of the source into the caustic. However, our models reveal a preferred time range for the caustic re-entry of HJD=2453523.4 +/- 0.1 (1-Jun, 19:00 - 24:00 UT). A precise determination of this epoch by collected data would provide strong constraints for the model parameters, while observations shortly after the caustic entry are highly sensitive to the brightness profile of the stellar limb. Dense follow-up observations over this time range are therefore strongly encouraged. An updated model light curve can be found 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/ -------------- On behalf of the PLANET collaboration Martin Dominik %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% If you prefer not to receive further PLANET Anomaly Alerts, please send an e-mail to planet@iap.fr.