The interactive map below shows our current prediction for the occultation by (3548) Eurybates on 2024 October 25 UT. The prediction is based on a Gaia eDR3 position for the star, corrected for parallax and proper motion, and the v20241001140958 orbit estimate for Eurybates, which is derived from eurybates_20240927a.bsp. This ephemeris has a 1-sigma crosstrack uncertainty of 1.9 km and a 1-sigma downtrack uncertainty of 0.2 sec for this event.
The geocentric mid-time of the event is 02:45:07.9 UT. The J2000 star position is RA 11:23:55.3 (11.3987033), Dec +10:52:22 (10.872685), and its magnitude is 12.28. Eurybates is moving at 33.9 km/s with respect to the star and its maximum downtrack length is estimated to be 78 km, so central chords are expected to last 2.3 seconds. The cross-track diameter of Eurybates is estimated to be 62 km for this event.
At the time of the occultation, the target star will be 36.2 degrees from the (42% illuminated) Moon. The predicted magnitude of Eurybates is 17.58, so it will be 130 times fainter than the star it is occulting.
Of-date coordinates for the target star on event night are RA 11:25:12.6 (11.4201667), Dec +10:44:10 (10.736111).