The interactive map below shows our current prediction for the stellar occultation by (15094) Polymele on 2018 November 23 UT. The prediction is based on a Gaia DR2 position for the star and the v20181015202347 orbit estimate for Polymele.
Geocentric mid-time of the event is 00:49:19 UT. Star position is RA 20:54:57.1, Dec -30:10:20 (J2000), and its magnitude is 12.66. Polymele is moving at 25 km/s with respect to the star and its diameter is estimated to be 21 km, so central chords are expected to last 0.8 seconds.