THE MILLION QUASARS (MILLIQUAS) CATALOGUE, v8

Abstract

Announcing the final release, v8, of the Milliquas (Million Quasars) quasar catalogue which presents all published quasars to 30 June 2023, including quasars from the first releases of the Dark Energy Spectroscopic Instrument (DESI) and the SDSS-DR18 Black Hole Mapper. Its totals are 907 144 type-I QSOs/AGN and 66 026 high-confidence (≈99% likelihood) radio/X-ray associated quasar candidates. Type-II and Bl Lac type objects are also included, bringing the total count to 1 021 800. Gaia-EDR3 astrometry is given for most objects. The catalogue is available on multiple sites.