The interactive map below shows our current prediction for the stellar occulation by (617) Patroclus on 2021 June 4 UT. The prediction is based on a Gaia DR2 position for the star and the v20181130000909 orbit estimate for Patroclus.
Patroclus is part of a binary, but we have not plotted both components yet. The ground-track will be updated before the event.
Geocentric mid-time of the event is 00:27:06 UT. Star position is RA 15:44:09.6, Dec -28:59:14 (J2000), and its magnitude is 14.68. Patroclus is moving at 17 km/s with respect to the star and its diameter is estimated to be 127 km, so central chords are expected to last 7.5 seconds.