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SACI 1 (25941)
COSPAR: 1999-057B | Alt Name: SACI-1
Image
Additional Sources
Launch Details
Launch Date
October 14, 1999
Launch Site
TAISC
Launch Pad
LC7
Launch Vehicle
Chang Zheng 4B
Orbital Elements
NORAD ID
25941
International Designator
1999-057B
Epoch
Sat, 04 Jul 2026 01:03:51 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
98.64°
Right Ascension
234.09°
Eccentricity
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Argument of Perigee
243.07°
Period
98.97 min
Mean Motion
14.55 rev/day
Latitude
Calculating...
Longitude
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Altitude
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Velocity
Calculating...
Polar Plot
3D Visualization
Basic Satellite Info
Name
SACI 1
Alternative Name
SACI-1
Type
Payload
Status
Unknown
Owner
INPE
Country
Brazil
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 25941U 99057B 26185.04434600 .00000514 00000-0 13088-3 0 9997
2 25941 98.6350 234.0854 0007226 243.0686 116.9772 14.54924065415098
Source: Celestrak
Summary
SACI 1, also known as SACI-1, is a Brazilian scientific satellite operated by INPE (Instituto Nacional de Pesquisas Espaciais). Launched on October 14, 1999, from the Taiyuan Satellite Launch Center using the Chang Zheng 4B launch vehicle, SACI 1 has a box shape with four panels and is spin-stabilized at 6 rpm. The satellite measures 0.6 meters in length, 0.4 meters in diameter, and spans 1.2 meters when its solar arrays are deployed. It weighs 60 kilograms both dry and at launch. SACI 1's mission focuses on studying cosmic rays, the magnetic field, and plasma. Its power is provided by four deployable fixed solar arrays and batteries. The satellite was manufactured by INPE with a RCS of 0.4685 but has no motor listed in its specifications.
Physical Characteristics
Length
0.6
Diameter
0.4
Span
1.2
Dry Mass
60
Launch Mass
60
Shape
Box + 4 Pan
Radar Cross Section
0.4685
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
SACI-1
Purpose
Scientific, cosmic rays, magnetic field and plasma
Mission
Scientific, cosmic rays, magnetic field and plasma
Manufacturer
INPE
Life Expectancy
Unknown
Bus
SACI
Configuration
box with 4 panels, spin stabilzed (6 rpm)
Motor
None
Equipment
?
Power System
4 deployable fixed solar arrays, batteries
ADCS
Unknown
Transmitter Frequency
Unknown
Map
Next Pass
Azimuth Elevation Time (Local)
Start Azimuth
Max Elevation
Stop Azimuth
Time Until
Pass Duration
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