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.^[1]

UPM-Sat 1

SATCAT no.	1995-033C
Mission duration	213 days
Spacecraft properties
Manufacturer	Technical University of Madrid
Launch mass	47 kilograms (104 lb)
Start of mission
Launch date	July 7, 1995 (1995-07-07)
Rocket	Ariane IV-40
Launch site	Guiana Space Centre
Orbital parameters
Reference system	Geocentric
Regime	Sun-synchronous polar orbit
Perigee altitude	670 kilometres (420 mi)
Apogee altitude	670 kilometres (420 mi)
Inclination	98.1 degrees
Period	98 minutes

UPM-Sat 2

SATCAT no.	2020-061E
Mission duration	2 years (expected)
Spacecraft properties
Manufacturer	Technical University of Madrid
Launch mass	45 kilograms (99 lb)
Start of mission
Launch date	September 3, 2020 (2020-09-03)
Rocket	Vega
Launch site	Guiana Space Centre
Orbital parameters
Reference system	Geocentric
Regime	Sun-synchronous polar orbit
Perigee altitude	600 kilometres (370 mi)
Apogee altitude	600 kilometres (370 mi)

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.^[2] 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.^[3][4]

UPM-Sat 2

The UPM-Sat 2 project aimed to develop a satellite with a mass less than 50 kg and overall dimensions less than 0.5 m x 0.5 m x 0.6 m. The UPM-Sat 2 satellite, also called M.A.T.I.A.S., was originally scheduled to launch in 1999. It was finally launched on September 3, 2020, on the flight VV16 of the Vega rocket.^[5]