Sputnik 8A91 | D1- 2
Sputnik 8A91 | D1- 2 lifted off aboard a Sputnik 8A91 from Baikonur Cosmodrome, Republic of Kazakhstan, carrying its payload to LEO.
- Launch time
- Status
- SUCCESS
- Operator
- Soviet Space Program
- Mission type
- Earth Science
- Rocket
- Sputnik 8A91
- Launch site
- Baikonur Cosmodrome, Republic of Kazakhstan
- Launch pad
- 1/5
- Payload
- —
- Target orbit
- LEO

Mission timeline
- 1958-05-15T07:00:35.000ZSputnik 8A91 roars off the pad at Baikonur Cosmodrome, Republic of Kazakhstan.
- The vehicle reaches Max Q, the highest aerodynamic load of the flight.
- Orbit insertion confirmed — now circling in LEO.
- All mission objectives achieved.