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Designation 16614 / 86019B
Launch date 22 Feb 1986
Country of origin Sweden
Operator Swedish Space Corp.
Mission Scientific: ionosphere and magnetosphere study
Perigee/Apogee 818/13521 km
Inclination 98.8°
Period 261.6 min
Launch vehicle Ariane V16

Designed to measure space plasma phenomena in the Earth's magnetosphere and produce UV images of the auroral zone. By September 1986 it had taken 20,000 images of the complete aurora.

Cost: $18 million

External resources


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Technical data


Prime contractor Saab Space
Mass at launch 538 kg
Payload mass 60 kg
Diameter 1.9 m
Height 0.5 m
DC power 80 W
Stabilization magneto-torquers (3 rpm)
Design lifetime 8 months


2 UV imagers & instruments to measure electric and magnetic fields, charged particles, and wave/particle interaction in the magnetosphere

Telemetry/data S-band
Data rate 55 kbps
RF power 2.5 W

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