This add-on put the Mariner 2 on the Orbiter. The Atlas-Centaur mesh come from Mariner 10
add-on of Missleman01 and the Mariner 2 mesh comes from Jack Higgins from Celestia Motherlode. I just edited the meshes and cfg files to put the Mariner 2 to work on the Orbiter 2006 P1.
Have fun with your Mariner 2!!!