SACI 1 [INPE]
Official name SACI 1
Alternative name SACI-1
Cospar ID 1999-057B
Norad ID 25941
Launch date 1999-10-14
Launch site TSC
Launch vehicle CZ-4B
Country/Organization Brazil
Type application Scientific, cosmic rays, magnetic field and plasma
Operator INPE
RCS size MEDIUM
Decay date ON ORBIT
Period (min) 99.08
Inclination (deg) 98.71
Perigee (km) 708
Apogee (km) 722
Eccentricity 0.00979020979020979
Mean motion (revs. per day) 14.5337101332257
Semi-Major axis (km) 7093.135
Raan (deg) 137.4914
Arg of perigee (deg) 122.8768
Shape Box + 4 Pan
Mass (kg) 60
Height (m) 0.6
Width (m) 0.4
Depth (m) 0.4
Span (m^2) 1.2
Contractors INPE
Equipment ?
Propulsion None
Configuration box with 4 panels, spin stabilzed (6 rpm)
Power 4 deployable fixed solar arrays, batteries

SACI (Satélite Científico 1) is a 60 kg scientific satellite (Satellite Cientifico) launched on the 14th October 1999 on a Chinese CZ-4B launcher from the Taiyuan launch site. The spacecraft was built by the Brazilian space agency (INPE), and placed into a 732 × 747 km sun-synchronous orbit together with the joint Chinese and Brazilian remote sensing satellite CBERS 1 as primary payload.

The satellite carries four scientific payloads in order to investigate plasma bubbles in the geomagnetic field, air glow, and anomalous cosmic radiation fluxes. It also carries various platform technology developments. The spacecraft has four deployable panels. The ground segment comprises two main stations, and user ground data collecting stations. It is reported that contact with the spacecraft was lost shortly after launch due to either to a communications system, antenna, or computer failure.

Satellite COSPAR Date LS Launch Vehicle Remarks
SACI 1 1999-057B 1999-10-14 TSC CZ-4B with CBERS 1