Mapping surface is around a 5X multipier.
1st Discovery is around 3X now.
First discovered tag (no map) = scan * 2.6
Just mapped = scan * 3.3333333
First mapped, not first discovered = scan * 8.0956
First mapped and first discovered = scan * 9.619
Meeting the efficiency target when mapping throws another 25% on top of the last three.
There are bonuses for FSSing and tagging everything in a system. Not sure if there's a mapped everything bonus