Proton-K/D-1 | Astron
The Astrophysics flight Proton-K/D-1 | Astron departed Baikonur Cosmodrome, Republic of Kazakhstan atop a Proton-K/D-1, bound for Elliptical.
- Launch time
- Status
- SUCCESS
- Operator
- Soviet Space Program
- Mission type
- Astrophysics
- Rocket
- Proton-K/D-1
- Launch site
- Baikonur Cosmodrome, Republic of Kazakhstan
- Launch pad
- 200/39 (200L)
- Payload
- —
- Target orbit
- Elliptical

Mission timeline
- 1983-03-23T12:45:06.000ZProton-K/D-1 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.
- Orbit insertion confirmed — now circling in Elliptical.
- All mission objectives achieved.