The interactive map below shows our current prediction for the occultation by (21900) Orus on 2026 February 10 UT. The prediction is based on a Gaia eDR3 position for the star, corrected for parallax and proper motion, and the v20230506030657 orbit estimate for Orus, which is derived from orus_20221130a.bsp. This ephemeris has a 1-sigma crosstrack uncertainty of 10.0 km and a 1-sigma downtrack uncertainty of 0.1 sec for this event (these are placeholder values).
The geocentric mid-time of the event is 02:22:45.3 UT. The J2000 star position is RA 11:41:32.1 (11.6922382), Dec -08:56:17 (-8.937931), and its magnitude is 11.91. Orus is moving at 10.9 km/s with respect to the star and its diameter is estimated to be 60.5 km, so central chords are expected to last 5.6 seconds.
Of-date coordinates for the target star on event night are RA 11:42:51.9 (11.7144167), Dec -09:04:58 (-9.082778).