This study was conducted to obtain the characteristics of source rock through organic geochemical analysis in Central Deep, NE Java Basin, field off north coast Madura. Three samples Cassiopeia-1, Pollen-1, and Alpha-1 wells were analyzed using methods including Total Organic Carbon analysis, Maturity vitrinite reflectance, Tmax, Production Index data, then kerogen type, isoprenoid, sterane, ca...