Long March 4B — mission imagery
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Success

Ziyuan-3-04

Long March 4BChina Aerospace Science and Technology CorporationLaunch Complex 9
Tuesday, December 16, 2025 · 03:17 AM UTCAdd to Calendar

This mission is complete.

Vehicle

Long March 4B

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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 Laun...

Height44.1 m
LEO Payload4,200 kg
Launches600
Successes575

Provider

China Aerospace Science and Technology Corporation

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CHN • Founded 1999

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 manufactu...

Mission Brief

The ZY-3 (Ziyuan-3, 'Resource-3') series represents China's first high-resolution, stereoscopic mapping satellites for civilian use. The second satellite is managed by the Satellite Surveying and Mapping Application Center (SASMAC). The imaging payload consists of a three-line camera array and a multispectral imager. The three-line panchromatic camera array to acquire stereoscopic imagery consists of three telescopic cameras with one oriented to the nadir and the other two each offset by 22° forward and backward in flight direction. The stereo mapping camera of ZY-3 has a resolution of 2.1 m for the nadir camera, and 2.6 m for the offset cameras. The swath width is 51 km. The multispectral imager for environmental and vegetation monitoring consists of a three-mirror telescope and a cooled detector system sensitive to four wavelength bands to capture full-color imagery as well as near-infrared data. The ground resolution of this system is 5.8 m.

PayloadZiyuan-3-04
OrbitSun-Synchronous Orbit
CustomerChina Aerospace Science and Technology Corporation
Stages3
PadLaunch Complex 9, Taiyuan Satellite Launch Center, People's Republic of China

Mission Timeline

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Launch Site

Launch Complex 9, Taiyuan Satellite Launch Center, People's Republic of China

LAUNCH SITE
38.863°N, 111.590°E

Schedule History

No delays or schedule changes recorded.