UPM-Sat

UPM-Sat is a series of Spanish microsatellites developed by the Technical University of Madrid (UPM), in collaboration with the Instituto Nacional de Técnica Aeroespacial (INTA), for educational, scientific and technological purposes.

== UPM-Sat 1 == The UPM-Sat 1, also called UPM/LB-Sat, was launched on July 7, 1995, from French Guiana on the flight V75 of the Ariane IV-40 launcher. It weighed 47 kg. It had an operational life in orbit of 213 days, with a Sun-synchronous polar orbit at an altitude of 670 kilometers, completing one revolution around the Earth every 98 minutes.