Gaia DR3 Update

Release date: April 21st, 2024.

Main updates include the use of Gaia DR3 star catalogue and new filter options such as magnitude drop, event duration, and object size.

At this stage occultation predictions are computed only for the outer Solar System objects including those classified as Trojans, Centaurs, and Kuiper Belt.

The total number of predictions also include a small percentage of events that happen strictly during the day, which are in very special cases of interest to some astronomers.

Below are the description of the main input sources and the outputs produced in this release.

Description	Value
Number of asteroids with predictions (at release date)	16,615
Number of events (at release date)	1,658,372
Earliest prediction (at release date)	Jan, 1st 2024
Latest prediction (at release date)	Jan, 1st 2025
Asteroid dynamical classes included (at release date)	Centaur Trojan Kuiper Belt Object
Source of asteroids ephemerides	JPL/NASA
Source of planetary ephemerides	de440 - JPL/NASA
Leap second kernel	NAIF0012 - JPL/NASA
Source of star catalog	Gaia DR3 / ESA