Key statistics
Satellite CZ-4 DEB at a glance.
Uptime
9325
Days in orbit
Revolutions
≈ 15.7
Per day
Orbit
SSO
Sun Synchronous Orbit
Inclination
98.4
Latest
Satellite identification and parameters
Extended collection of information and parameters for CZ-4 DEB.
Object identification
Identified? True
Debris? True
Object name: CZ-4 DEB
International designator: 1999-057SD
Object number (NORAD): 35325
Object ID (CCSDS): 35325
Country: PEOPLES REPUBLIC OF CHINA (PRC)
Current information (Y/N): Y
RCS size: SMALL
Orbital parameters
Decay date: April 25, 2025
Period: 91.489 minutes
Inclination: 98.4152 deg
SMA: 6725.729 km
Apoapsis: 358.458 km
Periapsis: 336.73 km
RAAN: 254.1248 deg
Eccentricy: 0.0016153
Argument of periapsis: 272.9313 deg
Mean anomaly: 87.01 deg
Mean motion: 15.73960056 rev/day
Mean motion (dot): 0.00914187 rev/day2
B* drag term: 0.0057725 1/REarth
Two-line elements (TLE)
Creation date: April 14, 2025, 3:05 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: April 13, 2025, 3:53 p.m. UTC
TLE line 0: 0 CZ-4 DEB
TLE line 1: 1 35325U 99057SD 25103.66206015 .00914187 00000-0 57725-2 0 9993
TLE line 2: 2 35325 98.4152 254.1248 0016153 272.9313 87.0100 15.73960056638924
Live tracking on map
Satellite CZ-4 DEB has decayed and is no longer in orbit. No tracking available.
In-orbit conjunctions
Satellite CZ-4 DEB has decayed and is no longer in orbit. No conjunctions available.
Associated space launch
The CBERS (China Brazil Earth Resources Satellite) or ZY 1 (Zi Yuan) satellites are designed for global coverage and include cameras to make optical observations and a data collecting system to gather data on the environment. They are unique systems due to the use of on-board sensors which combine features that are especially designed to resolve the broad range of space and time scales involved in the monitoring and preservation of the ecosystem. They are operated jointly by the China Centre for Resources Satellite Data and Application (CRESDA) and the Brazilian INPE (Instituto Nacional de Pesquisas Espaciais, National Institute of Space Research).
CZ-4 DEB was lifted into orbit during the mission ‘Long March 4B | Zi Yuan 1-1’, on board a Long March 4B space rocket.
The launch took place on Oct. 14, 1999, 3:15 a.m. from Launch Complex 7.
For more information about the launch, click the button.

Long March 4B | Zi Yuan 1-1
Agency: N/A
Status: Launch Successful
Launch date: Oct. 14, 1999, 3:15 a.m. UTC
Rocket: Long March 4B
Launch pad: Launch Complex 7
Location: Taiyuan Satellite Launch Center, People's Republic of China
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