Studied magnetic, electric, UV properties of auroral regions. Scientific satellite for the investigation of space plasma physics in the part of the magnetosphere close to the Earth, particularly in connection with the auroral phenomena. The nominal mission period is eight months but an extension can be envisaged. ST /SG/SER.E/167: The satellite Viking has ceased to function on 12 May 1987 due to a gradual degradation of its electrical power supply system. The satellite remains, however, in Earth orbit.

TV, business communications for Nordic countries; 5 deg E. High power telecommunications satellite with a dual mission; direct TV broadcasting and data communications. Four active transponders with two redundant; power output 200 W per transponder. Coverage area - East Nordic coverage zone as defined by ITU (WARC -77). Mission period estimated to be 6 to 8 years. Position 5 deg E. Positioned in geosynchronous orbit at 5 deg E in 1989-1998 As of 28 August 2001 located at 138.62 deg W drifting at 3.929 deg W per day. As of 2007 Mar 10 located at 132.37W drifting at 3.933W degrees per day.

Microgravity experiments. Recovered, although it reached only a fraction of the planned altitude. The MAXUS sounding rocket program began in 1989 and the first launch took place in 1991.The program was a joint venture between the Swedish Space Corporation and the German space company EADS-ST. The Maxus program was financed by ESA. The scientific objective was to perform experiments during 12-13 minutes of microgravity (10-4 g) using a single stage sounding rocket motor. The motor, a Castor 4B, had a maximum acceleration of 13 g, a top speed of 3500 m/sec and reached an apogee of around 750 km depending on the payload mass.

Ionospheric, auroral, amgnetospheric studies. Freja is a Swedish/German satellite designed for research into the aurora. The satellite was launched piggyback on a Long March 2C (CZ-2C) rocket and weighs 214 kg in orbit. It is a sun-pointing spinner (10 rpm) with a 2.2 m diameter. It will make high re solution measurements in the upper ionosphere and lower magnetosphere. Data will be received at Esrange, Kiruna, Sweden and at the Prince Albert Satellite Station in Canada's Saskatchewan Province. Launch time 0620 UT.

Geostationary at 23.5 degrees E. Positioned in geosynchronous orbit at 28 deg E in 1998-1999; 5 deg E in 2000.- As of 5 September 2001 located at 5.04 deg E drifting at 0.003 deg E per day. As of 2007 Mar 11 located at 4.97E drifting at 0.000W degrees per day.

The small 6 kg Munin nanosatellite was built by Swedish students in collaboration with the Swedish Insitute for Space Physics (IRF) and carried a particle detector, a spectrometer, and an auroral camera. After deployment of EO-1 and SAC-C a fourth burn put the Delta second stage in a 697 x 1800 km x 95.4 deg orbit, after which Munin was ejected from the stage.

Sweden's Odin scientific satellite carried a submillimeter wave astronomy instrument and a radiometer for atmospheric studies. The 1.1-meter reflector fed 500 GHz and 119 GHz radiometers and was used to study galactic molecular clouds, complementing NASA's SWAS satellite. The Odin satellite was designed and built by the Swedish Space Corporation (Svenska Rymdbolaget or Rymdaktiebolaget). SSC does most of its satellite design and construction in-house, although Saab made the antenna and carried out satellite final assembly. SSC was a goverment-owned company and a contractor for the Rymdstyrelsen (Swedish National Space Board).

The REXUS program was a joint project between the Swedish Space Corporation SSC, ESRANGE, and the Mobile Rocket Base (Moraba) of the German Aerospace Center DLR, conducted by newly founded EUROLAUNCH. The scientific payload capacity was shared between Swedish and German student experimenters. REXUS was considered as an annual sounding rocket program.

This was the first launch of the Brazilian sounding rocket VSB-30, replacing the British Skylark, from Esrange. The speed when leaving the launcher was about 60 m/s and after 45 seconds of acceleration the max speed was over 200 m/s. During the flight the experiments onboard spent approximately 6 minutes of microgravity and all experiments worked successfully. The payload was brought back for analysis at Esrange by helicopter within one hour after landing.

Sirius 4 carried Ku-band and Ka-band communications payloads for Nordic, Baltic and East European communications. Three upper-stage burns placed Sirius 4 into a 6916 km x 35478 km x 17.4 deg geostationary transfer orbit. A series of maneuvers by the satellite using its own Leros engine maneuvered the satellite into geosynchronous orbit, stationed at 5 deg East.