Systematics and accuracy of VLBI astrometry: What can be learned from a comparison with Gaia Data Release 2

Niu Liu, Sebastien Lambert, Zi Zhu +1

We aim to investigate the overall properties of the ICRF3 with the help of the Gaia Data release 2 (Gaia DR2). This could serve as an external check of the quality of the ICRF3. Th…