The interactive map below shows our current prediction for the stellar occultation by (15094) Polymele on 2021 December 30 UT. The prediction is based on a Gaia DR2 position for the star, corrected for parallax and proper motion, and the v20210114002035 orbit estimate for Polymele, which has a 1-sigma cross-track uncertainty of 22.7 km.
Geocentric mid-time of the event is 10:52:31 UT. Star position is RA 03:38:18.2, Dec +23:47:58 (J2000), and its magnitude is 16.45. Polymele is moving at 9 km/s with respect to the star and its diameter is estimated to be 21 km, so central chords are expected to last 2.3 seconds.