The launch of Roscosmos Proton-K/D took place on 21 Jul 1973, launching the Mars 4 (Mars-3MS #52S) mission. The launch site was Baikonur, Kyzylorda Province, Kazakhstan. The payload was deployed in a Other orbit.
DATE AND TIME
07:20 PM UTC
OPERATOR
LAUNCH SITE
Kyzylorda Province, Kazakhstan
VEHICLE
Other