Proton 1 (N-4 No.1), a ~12,200 kg Soviet high-energy cosmic-ray physics observatory, on the maiden flight of the UR-500 (Proton) heavy-lift rocket. Launched from Baikonur Site 81/23 on 16 July 1965 into LEO; it reentered on 11 October 1965.
- Outcome
- Success
- Orbit
- LEO
- Low Earth orbit
- Payload to orbit
- 8.7 T
- Flight
- 1st
- of 4 UR-500 flights
- Date and time
- 16 July 1965, 11:16 UTC
- Rocket
- UR-500
- Builder
- Khrunichev
- Launch site
- 81/23 (81L), Baikonur Cosmodrome, Republic of Kazakhstan
- Payload
- Astrophysics
- International designator
- 1965-054
- Launches in 1965
- 62nd of 124
See it in orbit
Space Atlas shows the satellites and rocket stages from this launch in 3D.
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