Revision of the ``Catalog of Large Martian Impact Craters''

The original “Catalog of Large Martian Impact Craters” (henceforth “Catalog 1.0”) was completed using Viking 1:2M-scale photomosaics during the 1980’s by the author [1]. It contains location, diameter, preservation, geologic unit, and ejecta and interior morphology information for 42,283 craters generally ≥5-km-diameter across the entire Martian surface. The database served as the primary source of data for Martian impact crater studies for many years. With the advent of higher resolution global datasets, it become clear that a revision of the databased was warranted, and this was begun about 10 years ago using THEMIS daytime IR image data (100 m/px resolution). We are nearing completion of this revised dataset and here present some comparisons of the new catalog (henceforth “Catalog 2.0”) with Catalog 1.0 and the Robbins Mars crater dataset [2]. Comparison of Catalogs 1.0 and 2.0