The interactive map below shows our current prediction for the occultation by (11351) Leucus on 2024 April 27 UT. The prediction is based on a Gaia eDR3 position for the star, corrected for parallax and proper motion, and the v20230508160410 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 19:41:40.2 UT. The J2000 star position is RA 08:23:36.2 (8.3933759), Dec +08:17:42 (8.294968), and its magnitude is 12.18. Leucus is moving at 13.8 km/s with respect to the star and its diameter is estimated to be 41.0 km, so central chords are expected to last 3.0 seconds.
Of-date coordinates for the target star on event night are RA 08:24:54.8 (8.4152222), Dec +08:12:55 (8.215278).