25851, 25852, 25853, 25854 - GLOBALSTAR M032, M030, M035, M051

GLOBALSTAR M032, M030, M035, and M051 joined the Globalstar fleet of communications satellites after being launched by a Delta 2 rocket from Cape Canaveral at 08:46 UT on 1999 July 10. The fleet enables voice and data links to/from stations located far away from cellular networks. The eventual total of the fleet will be 48 satellites. Initial orbital parameters were period 114 min, apogee 1,414 km, perigee 1413 km, and inclination 52 deg.


Globalstar planned 52 satellites (48 operational and 4 on-orbit spares) in Space Systems Loral's "Big LEO" global mobile communications network, offering global real time voice, data and fax. The satellites were 3-axis stabilized, and employed magnetometers on a deployable boom, sun sensors, GPS as attitude sensors, and carried two deployable solar arrays delivering 1100 W. The satellites in the first-generation constellation were designed to operate at full performance for a minimum of 7.5 years.

The satellites in the system were placed into low earth orbit in eight operational planes of six satellites each, with 1,414 kilometer circular orbits inclined at 52 degrees.

Facts in Brief

Launch Date: 1999-07-10
Launch Vehicle: Delta II
Launch Site: Cape Canaveral, United States
Mass: 450.0 kg
Nominal Power: 1100.0 W