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Long March 4B
China Aerospace Science and Technology Corporation
Active
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.
Height
44.1 m
Mass
249 t
Stages
3
Payload to LEO
4.2 t
Payload to GTO
1.5 t
Reusable
No
First flight
1999-05-10
Success rate
98.2%
Consecutive successes
15×
Success rate98.2%
Flight history (20)
UpcomingLong March 7A | Unknown Payload7/17/2026UpcomingLong March 3B/E | Unknown Payload7/23/2026UpcomingLong March 8A | Unknown Payload7/24/2026UpcomingLong March 5 | Chang'e 78/31/2026SuccessLong March 10B | Demo Flight7/10/2026SuccessLong March 7A | Unknown Payload6/23/2026SuccessLong March 12 | Unknown Payload6/17/2026SuccessLong March 3B/E | Unknown Payload6/16/2026SuccessLong March 5 | Unknown Payload6/11/2026SuccessLong March 8 | Unknown Payload6/5/2026SuccessLong March 6A | Unknown Payload6/4/2026SuccessLong March 12B | Demo Flight6/1/2026SuccessLong March 2D | Unknown Payload5/30/2026SuccessLong March 7A | Unknown Payload5/26/2026SuccessLong March 2F/G | Shenzhou 235/24/2026SuccessLong March 8 | SpaceSail Polar Group #95/17/2026SuccessLong March 2D | Unknown Payload4/17/2026SuccessLong March 6A | Unknown Payload4/8/2026SuccessLong March 8 | Unknown Payload4/7/2026SuccessLong March 2C/YZ-1S | Shiyan 333/27/2026