juliensimon/milliquas

Milliquas v8（百万类星体目录第8版）是一个包含1,021,800个类星体、活动星系核和耀变体的综合性目录，提供了位置、红移、星等以及射电/X射线关联信息。该目录是现有最全面的类星体/活动星系核汇编，基于文献和主要巡天数据（如SDSS、2QZ、6QZ、LAMOST等）编制。它包括I型类星体、活动星系核、耀变体和II型天体，每个天体都包含天球位置、红移、光学星等，以及与射电和X射线巡天的交叉识别。该目录广泛用于类星体目标选择、活动星系核人口统计以及与多波段巡天的交叉匹配。

Milliquas v8 — the Million Quasars Catalog containing 1,021,800 quasars, AGN, and blazars with positions, redshifts, magnitudes, and radio/X-ray associations. It is the most comprehensive quasar/AGN compilation available, drawn from the literature and major surveys (SDSS, 2QZ, 6QZ, LAMOST, etc.). The catalog includes type-I QSOs, AGN, blazars, and type-II objects, each with sky position, redshift, optical magnitudes, and cross-identifications with radio and X-ray surveys. It is widely used for quasar target selection, AGN demographics, and cross-matching with multi-wavelength surveys.