Key statistics
Satellite CBERS 1 at a glance.
Uptime
9451
Days in orbit
Revolutions
≈ 14.4
Per day
Orbit
SSO
Sun Synchronous Orbit
Inclination
98.8
Latest
Satellite identification and parameters
Extended collection of information and parameters for CBERS 1.
Object identification
Identified? True
Debris? False
Object name: CBERS 1
International designator: 1999-057A
Object number (NORAD): 25940
Object ID (CCSDS): 25940
Country: PEOPLES REPUBLIC OF CHINA/BRAZIL (CHBZ)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 100.222 minutes
Inclination: 98.8443 deg
SMA: 7147.178 km
Apoapsis: 773.143 km
Periapsis: 764.944 km
RAAN: 237.3297 deg
Eccentricy: 0.00057353
Argument of periapsis: 131.4574 deg
Mean anomaly: 228.7105 deg
Mean motion: 14.36814891 rev/day
Mean motion (dot): 0.00000277 rev/day2
B* drag term: 0.00010962879 1/REarth
Two-line elements (TLE)
Creation date: Aug. 29, 2025, 2:15 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Aug. 28, 2025, 10:15 p.m. UTC
TLE line 0: 0 CBERS 1
TLE line 1: 1 25940U 99057A 25240.92762719 .00000277 00000-0 10963-3 0 9994
TLE line 2: 2 25940 98.8443 237.3297 0005735 131.4574 228.7105 14.36814891355548
Live tracking on map
Real-time ground track for satellite CBERS 1.
In-orbit conjunctions
A list of the most updated potential collisions computed for object CBERS 1.
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).
CBERS 1 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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