CASC

Long March 4B | Unknown Payload

Unknown

Open07:25:00 PM UTCClose

Time to liftoff

T−

00D

00H

00M

00S

Window Opens

Fri, Oct 23, 2026

07:25 PM UTC

Net Precision

Hour

— Mission

Unknown Payload

Unknown· N/A

Details TBD.

— Rocket

Long March

Long March 4B

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.

Length: 44.1 m
Diameter: 3.35 m
Launch Mass: 249 t
LEO Capacity: 4,200 kg
GTO Capacity: 1,500 kg
Maiden Flight: 1999

Launches

Success

— Launch Pad

Launch Area 94 (SLS-2 / 603)

Jiuquan Satellite Launch Center, People's Republic of China

Latitude

40.9605°

Longitude

100.2981°

Pad Launches

138

Timezone

Asia/Shanghai

Launch Area 94 (SLS-2 / 603)

Jiuquan Satellite Launch Center, People's Republic of China

40.960°, 100.298°

— Launch Provider

Government

China Aerospace Science and Technology Corporation

Est. 1999 · Chairman & President: Lei Fanpei

The China Aerospace Science and Technology Corporation (CASC) is the main contractor for the Chinese space program. It is state-owned and has a number of subordinate entities which design, develop and manufacture a range of spacecraft, launch vehicles, strategic and tactical missile systems, and ground equipment. It was officially established in July 1999 as part of a Chinese government reform drive, having previously been one part of the former China Aerospace Corporation. Various incarnations of the program date back to 1956.

618

Total

602

Success

Pending