Kosmos-3M from Plesetsk Site 132/1 launched Kosmos 1023, a Strela-2M military store-and-dump communications satellite providing survivable mailbox relay for Soviet theatre forces from ~800 km LEO.
- Outcome
- Success
- Orbit
- LEO
- Low Earth orbit
- Payload to orbit
- 800 kg
- Flight
- 186th
- of 445 Kosmos-3M (11K65M) flights
- Date and time
- 21 June 1978, 09:27 UTC
- Rocket
- Kosmos-3M (11K65M)
- Builder
- Polyot
- Launch site
- 132/1 (132L), Plesetsk Cosmodrome, Russian Federation
- Payload
- Government/Top Secret
- International designator
- 1978-063
- Launches in 1978
- 65th of 128
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