Long March 4B | Ziyuan-2D, Tianyi MV-1, BNU-1
Long March 4B | Ziyuan-2D, Tianyi MV-1, BNU-1 rode a Long March 4B into space from Taiyuan Satellite Launch Center, People's Republic of China, deploying its payload to the designated orbit.
- Launch time
- Status
- SUCCESS
- Operator
- China Aerospace Science and Technology Corporation
- Mission type
- Orbital
- Rocket
- Long March 4B
- Launch pad
- Launch Complex 9
- Payload
- —
- Target orbit
- Unknown

Mission timeline
- 2019-09-12T03:26:00.000ZLong March 4B lifts off from Taiyuan Satellite Launch Center, People's Republic of China.
- Long March 4B 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.
- Mission success — all objectives completed.