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Track NAVSTAR 18 (USA 50) Satellite in Real Time

Detailed information about NAVSTAR 18 (USA 50) satellite

Designator id: 1990-008A

Description of NAVSTAR 18 (USA 50) Satellite:

Global Positioning System (GPS) was developed by the US Department of Defense to provide all-weather round-the-clock navigation capabilities for military ground, sea, and air forces. Since its implementation, GPS has also become an integral asset in numerous civilian applications and industries around the globe, including recreational used (e.g., boating, aircraft, hiking), corporate vehicle fleet tracking, and surveying. GPS employs 24 spacecraft in 20,200 km circular orbits inclined at 55 degrees. These vehicles are placed in 6 orbit planes with four operational satellites in each plane.

GPS Block 2 was the operational system, following the demonstration system comprised of Block 1 (Navstar 1 - 11) spacecraft. These spacecraft were 3-axis stabilized, nadir pointing using reaction wheels. Dual solar arrays supplied 710 watts of power. They used S-band (SGLS) communications for control and telemetry and UHF cross-link between spacecraft. The payload consisted of two L-band navigation signals at 1575.42 MHz (L1) and 1227.60 MHz (L2). Each spacecraft carried 2 rubidium and 2 cesium clocks and nuclear detonation detection sensors. Built by Rockwell Space Systems for the US Air force, the spacecraft measured 5.3 m across with solar panels deployed and had a design life of 7.5 years.


Technical data:

Launch Date: 1990-01-24
Launch Vehicle: Delta II
Launch Site: Cape Canaveral, United States
Mass: 840.0 kg
Nominal Power: 710.0 W
Funding Agencies:

Department of Defense-Department of the Air Force (United States)

Disciplines:

Navigation & Global Positioning

Source: Nasa

Two Line Element Set (TLE):
1 20452U 90008A   12338.80100660 -.00000046  00000-0  10000-3 0  4875
2 20452 056.0304 307.2832 0012656 222.8086 137.0887 01.89596308162525

Last TLE update on :2012-12-04

Find more details about NAVSTAR 18 (USA 50) Satellite