Encyclopedia Astronautica

American agency. ICO, USA.

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ICO Chronology

2000 March 12 - . 14:49 GMT - . Launch Site: Kiritimati. Launch Pad: 0.0 N x 154.0 W. Launch Platform: ODYSSEY. LV Family: Zenit. Launch Vehicle: Zenit-3SL. FAILURE: Second stage shut down prematurely due to a valve software command mistake. The satellite fell in the South Pacific, south of Pitcairn Island.. Failed Stage: 2.
  • ICO F-1 - . Mass: 2,750 kg (6,060 lb). Nation: USA. Agency: ICO. Manufacturer: Hughes. Class: Communications. Type: Civilian communications satellite. Spacecraft: HS 601. COSPAR: F000312A. Apogee: 200 km (120 mi). Summary: First ICO Global Communications satellite. Lost due to launch vehicle failure; was to have entered a 10,300 km x 45 deg circular orbit. ICO's satellites would carry multiple spot beams for mobile communications..

2001 June 19 - . 04:41 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC36B. Launch Pad: SLC36B. LV Family: Atlas. Launch Vehicle: Atlas IIAS. LV Configuration: Atlas IIAS AC-156.
  • ICO F-2 - . Mass: 2,750 kg (6,060 lb). Nation: USA. Agency: ICO. Manufacturer: El Segundo. Class: Communications. Type: Civilian communications satellite. Spacecraft: HS 601. USAF Sat Cat: 26857 . COSPAR: 2001-026A. Apogee: 10,389 km (6,455 mi). Perigee: 10,385 km (6,452 mi). Inclination: 45.0000 deg. Period: 360.10 min. Launch delayed from June 5. The ICO-2 satellite was launched by British New ICO (formerly ICO Global Communications) to provide mobile communications and data/Internet services at S-band, supporting 4500 simultaneous calls. The Boeing BSS-601M satellite was similar to the standard geostationary 601 model except that it omitted the R-4D apogee engine and associated fuel, and had a larger payload section. Launch mass was 2700 kg; dry mass was around 2200-2400 kg with the remainder being station-keeping fuel. The AC-156 launch vehicle's Centaur stage reached a 167 x 10099 km x 44.6 deg transfer orbit 10 minutes after launch. A second burn 1.5 hours later put ICO-2 into a circular 10,100 km orbit. The first ICO satellite was launched in March 2000 but failed to reach orbit. ICO-2 was used for testing of the ICO system before the remaining satellites would be launched. Unlike the Iridium and Globalstar constellations, ICO proposed to use a small number of large satellites. The ICO fleet, anticipated to consist of 10 satellites, was to enable relay in S- and C-bands of voice and internet communications from/to land and ocean based mobile telephones. With a total power of 5 kW, ICO F2 was to enable a simultaneous capacity in 4,500 channels.

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