The interactive map below shows our current prediction for the stellar occultation by (3548) Eurybates on 2021 December 11 UT. The prediction is based on a Gaia DR2 position for the star, corrected for parallax and proper motion, and the v20210113225539 orbit estimate for Eurybates, which has a 1-sigma cross-track uncertainty of 14.4 km.
Geocentric mid-time of the event is 22:12:15 UT. Star position is RA 03:27:46.7, Dec +21:47:13 (J2000), and its magnitude is 14.94. Eurybates is moving at 13 km/s with respect to the star and its diameter is estimated to be 66 km, so central chords are expected to last 4.9 seconds.