Russian Federal Space Agency (ROSCOSMOS)
| Russia
Plesetsk Cosmodrome, Russian Federation May 25, 1978, 2:30 p.m.
Status: Launch Successful
Mission:
The soviet Zenit-2M (Gektor, 11F690) was an improved version of the Zenit-2 area surveillance reconnaissance satellite. It was part of the Vostok-based Zenit-family.
Russian Space Forces
| Russia
Plesetsk Cosmodrome, Russian Federation May 17, 1978, 2:39 p.m.
Status: Launch Successful
Mission:
The Tselina-O (11F616) was one component of two-satellite Tselina ELINT satellite system. Tselina-O provided general ELINT surveillance to be examined in detail by the larger Tselina-D satellites.