gaiasupdate

The main objective of the gaiasupdate package is the computation of astrometric source parameters from Gaia epoch astrometry data.

The fourth Gaia data release (Gaia DR4) will make public the astrometric source parameters, e.g. the parallax and proper motions, alongside with timeseries of individual positional measurements, i.e. the “epoch astrometry” which will be available via DataLink or bulk download.

The gaiasupdate software package allows users to compute the former on the basis of the latter, to the extent possible.

The package is hosted at: https://github.com/esa/gaia-supdate

Features

Compute astrometric source parameters on the basis of epoch astrometry data.

Note that the epoch data of all sources will not be publicly available until the Gaia DR4 release. However, epoch astrometry of a small sample of sources was pre-released in advance of Gaia DR4.