SCIENCE AND DATABASE BACKGROUND: IMPACT CRATERS ARE ARGUABLY THE MAIN EXOGENIC PROCESS THAT MAKES A SIGNIFICANT CONTRIBUTION TO THE POST-FORMATION EVOLUTION OF SOLID BODIES IN THE SOLAR SYSTEM. CRATERS SPAN THE ENTIRE OBSERVABLE HISTORY OF THE MOON AND UNDERSTANDING THEIR POPULATIONS IS A MAJOR TOOL FOR UNRAVELING THE HISTORY OF ITS SURFACE THE IMPACTOR POPULATION THAT AFFECTED IT AND UNDERSTANDING HOW CRATERS FORM. THERE IS NO BROAD PUBLICLY AVAILABLE LUNAR CRATER DATABASE THAT EXISTS DOWN TO KILOMETER-SCALE FEATURES. THIS IS A CRITICAL DIAMETER RANGE THAT WOULD INFORM MANY POORLY UNDERSTOOD LUNAR PROCESSES AND EXISTING DATABASES AT LARGE DIAMETERS OMIT MORPHOMETRY AND MORPHOLOGY DATA THAT WOULD BE USEFUL FOR NUMEROUS SCIENCE INVESTIGATIONS. THE PI HAS BEEN IN THE PROCESS OF PRODUCING SUCH A CRATER DATABASE FOR THE PAST FEW YEARS AND THE BASIC INFORMATION (CRATER LATITUDE CRATER LONGITUDE AND CRATER DIAMETER) HAS BEEN COMPLETED FOR ALL CRATERS WITH DIAMETERS D 1 KM BY THE PDART STEP-2 SUBMISSION DEADLINE. WHILE THIS BASIC INFORMATION IS USEFUL INCLUDING ADDITIONAL INFORMATION ABOUT EACH IMPACT CRATER WOULD VASTLY INCREASE THE UTILITY OF THIS DATABASE. SCIENTIFIC DESCRIPTION OF PROPOSAL: THIS 3-YEAR PROPOSAL IS TO DO THIS ADDITIONAL WORK TO MAKE THIS DATABASE SIGNIFICANTLY MORE USEFUL TO THE COMMUNITY. ROBBINS AND HOOVER WOULD BE RESPONSIBLE FOR ADDING THE MORPHOLOGY AND MORPHOMETRY DATA. THEY WOULD USE PUBLICLY AVAILABLE DATA PRIMARILY FROM THE LUNAR RECONNAISSANCE ORBITER'S CAMERA'S (LROC) WIDE-ANGLE CAMERA (WAC) AND LASER ALTIMETER (LOLA) IN CONJUNCTION WITH KAGUYA'S TERRAIN CAMERA (TC) MOSAICS AND DTMS. MORPHOLOGY: MORPHOLOGY CLASSIFICATION IS A TWO-STEP PROCESS. FIRST THE GLOBAL MOSAICS WOULD BE SYSTEMATICALLY SEARCHED AND FIELDS OF OBVIOUS SECONDARY IMPACT CRATERS WOULD BE IDENTIFIED. SECOND EACH IMPACT CRATER WOULD BE EXAMINED INDIVIDUALLY AND THE SECONDARY CRATER CLASSIFICATION VALIDATED AND THEN INTERIOR MORPHOLOGY (SIMPLE COMPLEX FEATURES) EJECTA PRESENCE AND RELATIVE ALBEDO PRESERVATION CLASS AND CONFIDENCE THE FEATURE IS AN IMPACT CRATER WOULD BE RECORDED. MORPHOMETRY: THE WAC LOLA AND KAGUYA DTMS WOULD BE USED TO ANALYZE EACH D 1 KM CRATER THAT IS RESOLVABLE IN THESE DATASETS TO DERIVE RIM HEIGHT APPROXIMATE SURROUNDING SURFACE ELEVATION AND FLOOR DEPTH. THE METHOD USES COMPUTER-ASSISTED CODE THAT HAS ALREADY BEEN WRITTEN AND VALIDATED ON 10S OF THOUSANDS OF MARTIAN IMPACT CRATERS (ROBBINS&HYNEK 2012 2013). DATA ARCHIVING AND DATA VALIDATION: THIS FINAL DATASET WOULD BE SUBMITTED TO PDS AND OTHER REPOSITORIES FOR ARCHIVING. WHILE THE PDS SUBMISSION PROCESS DOES A BASIC VALIDATION OF THE DATA (E.G. FLAG A CRATER AT +1200 N) IT DOES NOT CHECK EACH CRATER FOR VALIDITY OF THE PARAMETERS. BECAUSE WE WANT TO PRODUCE A REFERENCE DATABASE THAT THE COMMUNITY CAN CONFIDENTLY USE CO-IS CHAPMAN KIRCHOFF SINGER WOULD SPEND 2 WEEKS EACH YEAR TO CHECK 1000S OF CRATERS AND PROVIDE VALIDATION OF THE MEASUREMENTS. WE ANTICIPATE THEY WOULD BE ABLE TO CHECK 3-4% OF THE DATABASE WHICH VIA RANDOM SAMPLING WOULD PROVIDE A GOOD ESTIMATE FOR THE OVERALL RELIABILITY OF THE DATABASE. RELEVANCE: THE OBJECTIVE OF THE PDART PROGRAM IS "TO GENERATE HIGHER-ORDER DATA PRODUCTS " INCLUDING "GENERATE NEW REFERENCE INFORMATION" AND "REFERENCE DATABASE CREATION." THIS PROPOSAL IS TO CREATE A REFERENCE DATABASE ( 1.4 OF THE PDART CALL) A HIGHER-ORDER DATA PRODUCT FROM LUNAR IMAGERY AND TOPOGRAPHY DATA. SPECIFICALLY PDART SOLICITS "PROPOSALS TO CREATE REFERENCE DATABASES USEFUL FOR PLANETARY SCIENCE RESEARCH." THERE WILL ALSO BE NO HYPOTHESIS-BASED SCIENCE IN THIS PROPOSED WORK.