Artemis: geostationary earth orbit satellite

Artemis (COSPAR ID: 2001-029A · SATCAT: №26863) A model of Artemis at Technisches Museum in Vienna Artemis (Advanced Relay and TEchnology MISsion) was a GEOS (Geostationary Earth Orbit Satellite) for telecommunications, built by Alenia Spazio for ESA. The Artemis satellite operated at the 21.5E orbital position until 2016, when it was moved to 123E to cover the L-Band spectrum rights for Indonesia’s Ministry of Defense. Launched by an Ariane 5 rocket on 12 July 2001, it initially reached an orbit much lower than planned (590 km × 17,487 km) due to a malfunction in the launch vehicle’s upper stage. In November 2017, Artemis was retired and replaced to a graveyard orbit. Payload The Artemis satellite has several payloads: SILEX (Semiconductor-laser Intersatellite Link Experiment). It is a laser link and uses a 60 mW AlGaAs laser diode as the transmitter and a photodiode detector, with a 25 cm telescope aperture, and a data rate of 50 Mbit/s. SKDR (S/Ka band Data Relay). It is a system for relaying data from other satellites. This uses a 2.85-metre antenna. LLM (L-band Land Mobile). It is a system designed for satellite communication with fairly small vehicle-based terminals in Europe. EGNOS navigation-signal transmitter. An advanced ion propulsion system with 44 kg of xenon propellant. Characteristics Operator: European Space Agency Contractor: Arianespace Mission duration: 16 years Launch: 12 July 2001, 21:58 UTC from Kourou ELA3 (French Guiana) End of mission: disposal placed in Graveyard orbit (deactivated in November 2017) Orbital parameters (before 2017): Inclination 9.6° / Apsis 35,800–35,700 Wingspan in orbit: 25 m Stabilization: inertial wheel Electrical power: 2.8 kW Energy storage: NiH2, 60 Ah, 42.5 V Weight: 3105 kg See also Transport blog See also Cars blog See also Motorcycles blog See also Buses blog See also Shipbuilding blog See also Motors and Engines blog See also Trains and railways blog See also Trucks and Cargo Vehicles blog See also Tractors and Special Equipment blog See also Tanks and Armored Vehicles See also Airplanes blog See also Helicopters blog See also Artillery, Missiles and Rockets blog See also Bicycles blogThe post Artemis: geostationary earth orbit satellite first appeared on All PYRENEES.