China Aerospace Science and Technology Corporation

Long March 4

China Aerospace Science and Technology Corporation


Successes: 127 Failures: 7 Pending: 16


Launch Vehicle

Long March 4

Configuration: B
Family: Long March 4

The Long March 4B (Chinese: 长征四号乙火箭), also known as the Chang Zheng 4B, CZ-4B and LM-4B is a Chinese orbital carrier rocket. Launched from Launch Complex 1 at the Taiyuan Satellite Launch Center, it is a 3-stage rocket, used mostly to place satellites into low Earth and sun synchronous orbits.


Earth Science

At 22:52 UTC on April 29, 2019, China used a Long March 4B rocket from the Taiyuan Satellite Launch Center to successfully launch two Tianhui-2-01 satellites. The satellites will be used for scientific experiments, land resource survey, geographic survey and mapping.

Launch Window

NET: April 29th 2019 - 22:52 UTC

Instantaneous launch window.

Watch the Launch

Taiyuan, People's Republic of China

Unknown Pad, Taiyuan