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                        PLANET ANOMALY ALERT
                               2006 #3
                      (issued 22-May, 18:55 UT)
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         OGLE 2006-BLG-238: short anomaly? / planetary origin?


Dear Colleagues,

data collected during the recent night by PLANET with the Danish 1.54m
telescope at ESO LaSilla (Chile) as well as OGLE data reveal an anomalous
behaviour of event OGLE 2006-BLG-238. The event appeared 0.4 mag brighter than
predicted for that epoch. A round top is indicated, compatible with a
deviation lasting about 0.5 days.

At this stage, the nature of the event is not clear. The source star might
have hit a caustic created by a stellar lens binary, but this kind of
deviation also does not seem unlikely to have been caused by a planet
orbiting the (single) lens star.

In order to find out, further dense monitoring is required and encouraged.

A light curve plot as well as data will appear on our webpages soon.

Event:           OGLE 2006-BLG-238
RA (J2000):      17:57:11.66
Dec (J2000):     -30:48:06.0

The baseline I magnitude reported by the OGLE team is 19.908 +/- 0.003.

PLANET observers:
Danish 1.54m:    Pascal Fouque, Uffe G. Jorgensen

For more information:
PLANET:            http://planet.iap.fr
OGLE:              http://ogle.astrouw.edu.pl/

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On behalf of the PLANET/RoboNet team,

Martin Dominik

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