The interactive map below shows our current prediction for the occultation by (11351) Leucus on 2027 May 12 UT. The prediction is based on a Gaia eDR3 position for the star, corrected for parallax and proper motion, and the v20230508164723 orbit estimate for Leucus, which is derived from leucus_20220214a.bsp. This ephemeris has a 1-sigma crosstrack uncertainty of 10.0 km and a 1-sigma downtrack uncertainty of 0.1 sec for this event (these are placeholder values).
The geocentric mid-time of the event is 10:16:19.1 UT. The J2000 star position is RA 14:20:53.7 (14.3482407), Dec -21:19:31 (-21.325389), and its magnitude is 9.87. Leucus is moving at 17.3 km/s with respect to the star and its diameter is estimated to be 41.0 km, so central chords are expected to last 2.4 seconds.
Of-date coordinates for the target star on event night are RA 14:22:26.1 (14.3739167), Dec -21:26:58 (-21.449444).