The interactive map below shows our current prediction for the stellar occultation by (21900) Orus on 2021 January 16 UT. The prediction is based on a Gaia DR2 position for the star, corrected for parallax and proper motion, and the v20210111193357 orbit estimate for Orus, which has a 1-sigma cross-track uncertainty of 7.2 km.
Geocentric mid-time of the event is 20:32:09 UT. Star position is RA 23:36:54.7, Dec +05:36:43 (J2000), and its magnitude is 10.98. Orus is moving at 28 km/s with respect to the star and its diameter is estimated to be 51 km, so central chords are expected to last 1.8 seconds.