NASA Logo, National Aeronautics and Space Administration
NASA Space Science Data Coordinated Archive Header


NSSDCA ID: 1986-017J
COSPAR ID: 1986-017JE


GFZ 1 was a German microsatellite that was transported aboard the Progress-M27 spacecraft to the Russian Mir space station and subsequently released.released. It was designed as a passive satellite, equipped with 60 retro-reflectors to be illuminated from the ground by a global network of satellite laser ranging (SLR) systems for gravitational studies.

During four years and 64 days in space, 5,402 passes of GFZ 1 were observed by 33 stations of the global SLR network.

Alternate Names

  • 23558
  • 86-017JE
  • GFZ1

Facts in Brief

Launch Date: 1995-04-19
Launch Vehicle: Proton Booster Plus Upper Stage
Launch Site: Tyuratam (Baikonur Cosmodrome), Kazakhstan
Mass: 20.63 kg

Funding Agency

  • GeoForschungsZentrum Potsdam (German Democratic Republic)


  • Earth Science

Additional Information

Questions and comments about this spacecraft can be directed to: Coordinated Request and User Support Office

[] NASA Logo -