primary mission. Current: 58 days since landing COSPAR ID 2011-070A Homepage Mars Science Laboratory Mass 900 kg (2,000 lb) [ 4 ] Power Radioisotope Thermoelectric Generator (RTG) Mars landing Date August 5, 2012, 05:17 UTC SCET [ 5 ] MSD 49269 05:50 AMT Coordinates Aeolis Palus (" Bradbury Landing ") [ 6 ]