This CatWISE mirror dataset includes the CatWISE Preliminary and CatWISE2020 version. The Preliminary CatWISE catalog consists of 900,849,014 sources over the entire sky selected from WISE and NEOWISE survey data at 3.4 and 4.6 microns (W1 and W2) collected from 2010 to 2016. This dataset includes four times as many exposures and spans over ten times as large a time baseline as the AllWISE catalog.The CatWISE2020 Catalog consists of 1,890,715,640 sources over the entire sky selected from WISE and NEOWISE survey data at 3.4 and 4.6 microns (W1 and W2) collected from 2010 Jan. 7 to 2018 Dec. 13. This dataset includes six times as many exposures and spans over sixteen times as large a time baseline as the AllWISE catalog. Please refer to the readme file for more details for the two dataset.