Tsiklon-2 | I2P 4
Operated by Soviet Space Program, the Government/Top Secret mission Tsiklon-2 | I2P 4 delivered its payload into LEO.
- Launch time
- Status
- SUCCESS
- Operator
- Soviet Space Program
- Mission type
- Government/Top Secret
- Rocket
- Tsiklon-2
- Launch site
- Baikonur Cosmodrome, Republic of Kazakhstan
- Launch pad
- 90/20
- Payload
- —
- Target orbit
- LEO

Mission timeline
- 1970-10-23T04:42:56.000ZTsiklon-2 lifts off from Baikonur Cosmodrome, Republic of Kazakhstan.
- Tsiklon-2 passes through max aerodynamic pressure (Max Q).
- Main engine cutoff — the first stage shuts down as planned.
- Stage separation — the first stage separates cleanly.
- Second-stage engine ignites for the next phase of flight.
- Orbit insertion confirmed — the vehicle is now in LEO.
- Mission success — all objectives completed.