Multifrequency Catalogue of Blazars - 5th Edition

The 5th Edition of the Multifrequency Catalogue of Blazars is one of the most complete lists of Active Galactic Nuclei whose emission properties are recognised as typical of blazars. It includes the list of sources and an essential compilation of multifrequency data from radio to gamma rays. The source list for the entire sky is also available online at the ASDC web site (http //www.asdc.asi.it/bzcat/) where it is frequently updated to add new blazars and to improve the database.