Key statistics
Satellite SACI 1 at a glance.
Uptime
9451
Days in orbit
Revolutions
≈ 14.5
Per day
Orbit
SSO
Sun Synchronous Orbit
Inclination
98.7
Latest
Satellite identification and parameters
Extended collection of information and parameters for SACI 1.
Object identification
Identified? True
Debris? False
Object name: SACI 1
International designator: 1999-057B
Object number (NORAD): 25941
Object ID (CCSDS): 25941
Country: BRAZIL (BRAZ)
Current information (Y/N): Y
RCS size: MEDIUM
Orbital parameters
Period: 99.002 minutes
Inclination: 98.6778 deg
SMA: 7089.057 km
Apoapsis: 717.655 km
Periapsis: 704.189 km
RAAN: 274.2117 deg
Eccentricy: 0.00094979
Argument of periapsis: 109.1075 deg
Mean anomaly: 251.115 deg
Mean motion: 14.54521262 rev/day
Mean motion (dot): 0.00000625 rev/day2
B* drag term: 0.000158141 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, 10:40 p.m. UTC
TLE line 0: 0 SACI 1
TLE line 1: 1 25941U 99057B 25240.94505840 .00000625 00000-0 15814-3 0 9994
TLE line 2: 2 25941 98.6778 274.2117 0009498 109.1075 251.1150 14.54521262370158
Live tracking on map
Real-time ground track for satellite SACI 1.
In-orbit conjunctions
A list of the most updated potential collisions computed for object SACI 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).
SACI 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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