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Sirio
Sirio 1
Sirio 1
Credit: Manufacturer Image
Italian communications technology satellite. SIRIO was a spin stabilized geostationary experimental communications satellite with a nominal life of two years. Communication satellite built by Compagnia Nazionale Satelliti per Telecommunicaziono SpA, Italy. Launched 1977 - 1982.

AKA: Satellite Italiano Ricerca Industriale Orientata. Status: Operational 1977. First Launch: 1977-08-25. Last Launch: 1982-09-09. Number: 2 . Gross mass: 220 kg (480 lb).

Characteristics of satellite: Weight at launch 398 kg, in orbit 218 kg. Configuration - cylindrical, height 1.981m, diameter 1.433m,


More at: Sirio.

Family: Communications technology sat, Geosynchronous orbit, Technology. Country: Italy. Launch Vehicles: Thor, Delta, Ariane 1, Delta 2313, Ariane, Delta 2000. Projects: MARECS. Launch Sites: Cape Canaveral, Cape Canaveral LC17B, Kourou, Kourou ELA1. Agency: CNR. Bibliography: 2, 279, 6, 6878, 13093.

1977 August 25 - . 23:49 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC17B. LV Family: Thor. Launch Vehicle: Delta 2313.
  • Sirio 1 - . Mass: 220 kg (480 lb). Nation: Italy. Agency: CNR. Class: Technology. Type: Communications technology satellite. Spacecraft: Sirio. Completed Operations Date: 1989-09-28 . USAF Sat Cat: 10294 . COSPAR: 1977-080A. Apogee: 35,869 km (22,287 mi). Perigee: 35,755 km (22,217 mi). Inclination: 9.6000 deg. Period: 1,437.40 min.

    Experimental commsat. SIRIO (Satellite Italiano Ricerca Industriale Orientata). Launch time 2350:00 GMT. Geographical longitude of geostationary orbit 15 deg W. SIRIO is a spin stabilized geostationary experimental communications satellite. Characteristics of satellite: Weight at launch 398 kg, in orbit 218 kg. Configuration - cylindrical, height 1.981m, diameter 1.433 m, nominal life two years. Positioned in geosynchronous orbit over the Atlantic Ocean at 15 deg W in 1977-1981; over the Atlantic Ocean 25 deg W in 1981-1983; over the Indian Ocean 65 deg E in 1983-1985 As of 4 September 2001 located at 86.65 deg E drifting at 0.265 deg E per day. As of 2007 Mar 11 located at 75.38E drifting at 0.003E degrees per day.


1982 September 9 - . 02:12 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELA1. LV Family: Ariane. Launch Vehicle: Ariane 1. FAILURE: Failure.
  • Sirio 2 - . Payload: Sirio 2. Mass: 220 kg (480 lb). Nation: Europe. Agency: ESA. Program: MARECS. Spacecraft: SIRIO.


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