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Thor Comsat
The Thor communication satellites are orbited by Telenor of Norway and provide television services to Scandinavia. Thor 1 satellite was originally orbited by British Satellite Broadcasting as Marcopolo 2. It was purchased on orbit in 1992 from BSB.



Country: Norway. Spacecraft: HS 376. Launch Vehicles: Delta 6925, Delta 7925, Delta 7925-9.5. Projects: BSB. Launch Sites: Cape Canaveral. Agency: El Segundo, Telenor.

1990 August 18 - . 00:42 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC17B. LV Family: Thor. Launch Vehicle: Delta 6925.
  • Thor 1 / BSB-R2 - . Payload: Marco Polo 2. Mass: 1,220 kg (2,680 lb). Nation: Norway. Agency: BSB. Program: Thor Comsat. Class: Communications. Type: Civilian communications satellite. Spacecraft: HS 376. USAF Sat Cat: 20762 . COSPAR: 1990-074A. Apogee: 35,794 km (22,241 mi). Perigee: 35,779 km (22,231 mi). Inclination: 0.0000 deg. Period: 1,436.10 min.

    UK DBS; 31 deg W. Direct broadcasting system. Expected operational life 12.5 yr. Owner/operator: British Sky Broadcasting Ltd, 6 Centaurs Business Park, Grant Way, Isleworth, Middlesex TW7 5QD. Sold on-orbit in 1992 to Telenor Norway and redesignated Thor 1. Positioned in geosynchronous orbit at 50 deg W in 1990; 31 deg W in 1991-1992; 1 deg W in 1992-1999 As of 3 September 2001 located at 0.72 deg W drifting at 0.001 deg E per day. As of 2007 Mar 9 located at 61.51W drifting at 3.830W degrees per day.


1997 May 20 - . 22:39 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC17A. LV Family: Thor. Launch Vehicle: Delta 7925.
  • Thor 2 - . Payload: Thor 2A. Mass: 2,800 kg (6,100 lb). Nation: Norway. Agency: Telenor. Manufacturer: El Segundo. Program: Thor Comsat. Class: Communications. Type: Civilian communications satellite. Spacecraft: HS 376. USAF Sat Cat: 24808 . COSPAR: 1997-025A. Apogee: 35,793 km (22,240 mi). Perigee: 35,780 km (22,230 mi). Inclination: 0.0000 deg. Period: 1,436.10 min. Geosynchronous. Stationed over 0.8W Positioned in geosynchronous orbit at 1 deg W in 1997-1999 As of 5 September 2001 located at 0.73 deg W drifting at 0.000 deg E per day. As of 2007 Mar 9 located at 0.76W drifting at 0.002W degrees per day..

1998 June 10 - . 00:35 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC17A. LV Family: Thor. Launch Vehicle: Delta 7925-9.5.
  • Thor 3 - . Mass: 2,800 kg (6,100 lb). Nation: Norway. Agency: Telenor. Manufacturer: El Segundo. Program: Thor Comsat. Class: Communications. Type: Civilian communications satellite. Spacecraft: HS 376. USAF Sat Cat: 25358 . COSPAR: 1998-035A. Apogee: 35,798 km (22,243 mi). Perigee: 35,777 km (22,230 mi). Inclination: 0.1000 deg. Period: 1,436.10 min.

    The spacecraft was delivered to its final orbit in a complex series of five engine burns by three rocket stages. The Delta's second stage demonstrated its restart capability in 4 burns: Burn 1 placed the rocket and payload into a low circular orbit; Burn 2 raised the apogee to 1400 km; Burn 3 circularised the orbit at 1400 km. The second stage then separated, and Burn 4 lowered the spent stage's perigee to a low altitude to ensure the stage would decay quickly and not add to the space junk already on orbit. Stage 3 burned once to place the payload and its kick motor into a high 1400 km perigee geosynchronous transfer orbit. The Stage 4 Star 30 apogee kick motor circularised the spacecraft's orbit at geostationary altitude. Geostationary at 0.8 degrees W. Positioned in geosynchronous orbit at 1 deg W in 1998-1999 As of 4 September 2001 located at 0.83 deg W drifting at 0.000 deg E per day. As of 2007 Mar 9 located at 0.85W drifting at 0.002W degrees per day.


2008 February 11 - . 11:34 GMT - . Launch Site: Baikonur. LV Family: Proton. Launch Vehicle: Proton-M/Briz-M.
  • Thor 5 - . Mass: 1,940 kg (4,270 lb). Nation: Norway. Agency: ILS. Program: Thor Comsat. Class: Communications. Type: Military communications satellite. Spacecraft: Star bus. USAF Sat Cat: 32487 . COSPAR: 2008-006A. Apogee: 35,796 km (22,242 mi). Perigee: 35,777 km (22,230 mi). Inclination: 0.1000 deg. Period: 1,436.10 min. Ku-band light geostationary satellite operated by Telenor Satellite Broadcasting..

2009 October 29 - . 20:00 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELA3. LV Family: Ariane 5. Launch Vehicle: Ariane 5ECA.
  • Thor 6 - . Payload: Spacebus 4000B2. Mass: 3,050 kg (6,720 lb). Nation: France. Agency: Arianespace. Program: Thor Comsat. Class: Communications. Type: Civilian communications satellite. Spacecraft: Spacebus 4000. USAF Sat Cat: 36033 . COSPAR: 2009-058B. Apogee: 35,793 km (22,240 mi). Perigee: 35,780 km (22,230 mi). Inclination: 0.0000 deg. Period: 1,436.10 min. Direct broadcast satellite stationed at 1 deg W..


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