The Million Quasars (Milliquas) catalog, v5.0 beta, 19 June 2017

Note: This is a "live" catalog of quasars and quasar candidates. The published version is the Half Million Quasars catalog (HMQ: 2015, PASA 32, 10) which excludes candidates. The HMQ page is here -- has FITS file also.


MILLIQUAS v5.0 beta includes quasars from the literature to 15 June 2017. This "beta" edition presents astrometric precision to 1/10th arcsecond and 1/100th magnitude in preparation for the upcoming SDSS-DR14 release.  After DR14 is released and incorporated, Milliquas v5.1 will be released. 

This edition includes about 458K type-I QSOs & AGNs plus about one million quasar candidates of 80%+ QSO-likelihood -- exact counts and details are in the ReadMe. Radio and/or X-ray identifications are shown where applicable, plus, for the candidates, the probability of each being a true quasar.

Here is the ReadMe, and a quick browse of sample data (in flat text form) is here.

Get the 40 Mb zipped file here .




Eric Flesch, last updated 19 June 2017