Proton / UR-500 K/D | Kosmos 146
Proton / UR-500 K/D | Kosmos 146 rode a Proton into space from Baikonur Cosmodrome, Republic of Kazakhstan, deploying its payload to the designated orbit.
- Launch time
- Status
- SUCCESS
- Operator
- Soviet Space Program
- Mission type
- Orbital
- Rocket
- Proton
- Launch site
- Baikonur Cosmodrome, Republic of Kazakhstan
- Launch pad
- 81/23 (81L)
- Payload
- —
- Target orbit
- Unknown

Mission timeline
- 1967-03-10T11:30:33.000ZProton roars off the pad at Baikonur Cosmodrome, Republic of Kazakhstan.
- The vehicle reaches Max Q, the highest aerodynamic load of the flight.
- MECO — first-stage propulsion ends after a nominal burn.
- Clean stage separation confirmed.
- The upper-stage engine lights up after separation.
- All mission objectives achieved.