Encyclopedia Astronautica
SES


Luxembourg agency overseeing development of spacecraft. Societe Europeene des Satellites, Luxembourg.

AKA: Astra.

More... - Chronology...


Associated Countries
Associated Spacecraft
  • AS 5000 American communications satellite. 4 launches, 1991.03.02 (Astra 1B) to 1992.06.10 (Intelsat K). 3-axis stabilization with momentum wheels, magnetic torquers, Earth sensors and 20 blowdown monopropellant hydrazine thrusters. More...

See also
  • Agency Agencies or institutions overseeing design, development, construction, or operation of space-related systems. More...

Associated Programs

SES Chronology


1988 December 11 - . 00:33 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELA2. LV Family: Ariane. Launch Vehicle: Ariane 44LP. LV Configuration: Ariane 44LP V27.
  • Astra 1A - . Mass: 1,780 kg (3,920 lb). Nation: Europe. Agency: SES. Manufacturer: Lockheed. Program: Astra. Class: Communications. Type: Civilian communications satellite. Spacecraft: AS 4000. USAF Sat Cat: 19688 . COSPAR: 1988-109B. Apogee: 35,803 km (22,246 mi). Perigee: 35,770 km (22,220 mi). Inclination: 0.8000 deg. Period: 1,436.10 min. European TV broadcast; 19.2 deg W. Astra 1A provides TV coverage to Western Europe. The satellite is owned and operated by Société Europíenne des Satellites (SES), a private company formed in 1985. Astra 1A is based in the GE 4000 series platform, and was the first in a network of four satellites. Spacecraft: GE 4000 platform.3-axis stabilisation with momentum wheels, magnetic torquers, Earth sensors and 16 blowdown monopropellant hydrazine thrusters. Solar arrays provide 2800 W BOL, 3 50 Ahr NiH batteries. GEO insertion by Star 37XFP solid rocket motor. Payload: 16 Ku-band transponders (with six spares) . Positioned in geosynchronous orbit at 19 deg E in 1989-1999 As of 5 September 2001 located at 19.38 deg E drifting at 0.002 deg W per day. As of 2007 Mar 10 located at 13.01E drifting at 6.968W degrees per day.

1991 March 2 - . 23:36 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELA2. LV Family: Ariane. Launch Vehicle: Ariane 44LP. LV Configuration: Ariane 44LP V42.
  • Astra 1B - . Mass: 2,620 kg (5,770 lb). Nation: Europe. Agency: SES. Manufacturer: Lockheed. Program: Astra. Class: Communications. Type: Civilian communications satellite. Spacecraft: AS 5000. USAF Sat Cat: 21139 . COSPAR: 1991-015A. Apogee: 35,799 km (22,244 mi). Perigee: 35,774 km (22,228 mi). Inclination: 0.0000 deg. Period: 1,436.10 min. Stationed at 19.2 deg E; European coverage. Astra 1B provides TV coverage to Western Europe. The satellite is owned and operated by Société Europíenne des Satellites (SES), a private company formed in 1985. Astra 1B is the second in a network of four satellites. SES acquired Astra 1B from DBS Crimson Satellite Associates while still under construction by GE Astro Space (as Satcom K3). Astra 1B is colocated with Astra 1A, and doubled the number of channels provided by the Astra network. Spacecraft: GE 5000 platform.3-axis stabilisation with momentum wheels, magnetic torquers, Earth sensors and 20 blowdown monopropellant hydrazine thrusters. Solar arrays provide 4850 W BOL, 4 50 Ahr NiH batteries. GEO insertion provided by 2 500N bipropellant motors. Payload: 16 Ku-band transponders (with six spares) Positioned in geosynchronous orbit at 19 deg E in 1991-1999 As of 5 September 2001 located at 19.20 deg E drifting at 0.002 deg W per day. As of 2007 Mar 10 located at 92.40W drifting at 6.354W degrees per day.

1993 May 12 - . 00:56 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELA2. LV Family: Ariane. Launch Vehicle: Ariane 42L. LV Configuration: Ariane 42L V56.
  • Astra 1C - . Mass: 2,790 kg (6,150 lb). Nation: Europe. Agency: SES. Program: Astra. Class: Communications. Type: Civilian communications satellite. Spacecraft: HS 601. USAF Sat Cat: 22653 . COSPAR: 1993-031A. Apogee: 35,798 km (22,243 mi). Perigee: 35,777 km (22,230 mi). Inclination: 0.0000 deg. Period: 1,436.10 min. Stationed at 1.2 deg E. TV distribution services to Western Europe and the Canary Islands under franchise from the Grand Duchy of Luxembourg. Contracted and controlled by the private company formed in 1985 called Société Europíenne des Satellites (SES). This is the third in a series of 4 medium power satellites, and will act primarily as Astra 1A's backup. Spacecraft: HS-601 platform.3-axis unified ARC 22 N and one Marquardt 490 N bipropellant thrusters, Sun and Barnes Earth sensors and two 61 Nms 2-axis gimballed momentum bias wheels.1658 kg nitrogen tetroxide & MMH in four spheres. Spin-stabilised in transfer orbit. Twin solar wings of three 2.16 x 2.54 m panels carrying large area silicon cells on Kevlar substrate to satisfy 3.3 kW requirement. Eclipse protection provided by Nickel hydrogen batteries. Payload: 18 eclipse protected transponders, plus six spares with 63W TWTA 10.95-11.200 Ghz down Ku-band European beams in 250 Mhz band adjacent (below) to Astra 1A, 26 Mhz bandwidth, eirp 50 dBW min, orthogonal polarisation, operating in the FSS range Positioned in geosynchronous orbit at 19 deg E in 1993-1999 As of 5 September 2001 located at 19.21 deg E drifting at 0.002 deg W per day. As of 2007 Mar 11 located at 4.54E drifting at 0.051E degrees per day.

1994 November 1 - . 00:37 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELA2. LV Family: Ariane. Launch Vehicle: Ariane 42P. LV Configuration: Ariane 42P+ V69.
  • Astra 1D - . Mass: 2,924 kg (6,446 lb). Nation: Europe. Agency: SES. Program: Astra. Class: Communications. Type: Civilian communications satellite. Spacecraft: HS 601. USAF Sat Cat: 23331 . COSPAR: 1994-070A. Apogee: 35,796 km (22,242 mi). Perigee: 35,773 km (22,228 mi). Inclination: 0.0200 deg. Period: 1,436.00 min. European DBS and radio. Stationed at 19.29 deg E. TV distribution services to Western Europe and the Canary Islands under franchise from the Grand Duchy of Luxembourg. Contracted and controlled by the private company formed in 1985 called Société Europíenne des Satellites (SES). This is the last in a series of 4 medium power satellites, and will act primarily as Astra 1B and 1C's backup. It will also carry four 12.5 Ghz BSS transponders that can be combined for HDTV. Spacecraft: HS-601 platform.3-axis unified ARC 22 N and one Marquardt 490 N bipropellant thrusters, Sun and Barnes Earth sensors and two 61 Nms 2-axis gimballed momentum bias wheels.1658 kg nitrogen tetroxide & MMH in four spheres. Spin-stabilised in transfer orbit. Twin solar wings of three 2.16 x 2.54 m panels carrying large area silicon cells on Kevlar substrate to satisfy 3.3 kW requirement. Eclipse protection provided by Nickel hydrogen batteries. Payload: 18 eclipse protected transponders, plus six spares with 63W TWTA 10.75-10.95 Ghz FSS (&12.5 Ghz BSS) down Ku-band European beams in 250 Mhz band adjacent (below) to Astra 1C, 26 Mhz bandwidth, eirp 50 dBW min, orthogonal polarisation, operating in the FSS range Positioned in geosynchronous orbit at 19 deg E in 1995-1998; 28 deg E in 1998; 19 deg E in 1998-1999; 28 deg E in 2000.- As of 3 September 2001 located at 24.18 deg E drifting at 0.006 deg E per day. As of 2007 Mar 10 located at 23.50E drifting at 0.008W degrees per day.

1995 October 19 - . 00:38 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELA2. LV Family: Ariane. Launch Vehicle: Ariane 42L. LV Configuration: Ariane 42L-3 V79.
  • Astra 1E - . Mass: 2,700 kg (5,900 lb). Nation: Europe. Agency: SES. Program: Astra. Class: Communications. Type: Civilian communications satellite. Spacecraft: HS 601. USAF Sat Cat: 23686 . COSPAR: 1995-055A. Apogee: 35,799 km (22,244 mi). Perigee: 35,774 km (22,228 mi). Inclination: 0.0000 deg. Period: 1,436.10 min. Western Europe digital TV; 18 Ku-band transponders. Stationed at 19.2 deg E. Positioned in geosynchronous orbit at 19 deg E in 1995-1999 As of 5 September 2001 located at 19.16 deg E drifting at 0.002 deg W per day. As of 2007 Mar 10 located at 19.18E drifting at 0.019W degrees per day.

1996 April 8 - . 23:09 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC81/23. LV Family: Proton. Launch Vehicle: Proton-K/DM-2M. LV Configuration: Proton-K/DM-2M (DM3) 390-01.
  • Astra 1F - . Mass: 3,010 kg (6,630 lb). Nation: Europe. Agency: SES. Program: Astra. Class: Communications. Type: Civilian communications satellite. Spacecraft: HS 601. USAF Sat Cat: 23842 . COSPAR: 1996-021A. Apogee: 35,793 km (22,240 mi). Perigee: 35,778 km (22,231 mi). Inclination: 0.1000 deg. Period: 1,436.10 min. Summary: Geostationary at 19.3E. Positioned in geosynchronous orbit at 19 deg E in 1996-1999 As of 5 September 2001 located at 19.16 deg E drifting at 0.002 deg W per day. As of 2007 Mar 10 located at 19.18E drifting at 0.016W degrees per day..

1997 December 2 - . 23:10 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC81/23. LV Family: Proton. Launch Vehicle: Proton-K/DM-2M. LV Configuration: Proton-K/DM-2M (DM3) 382-02.
  • Astra 1G - . Nation: Europe. Agency: SES. Manufacturer: El Segundo. Program: Astra. Class: Communications. Type: Civilian communications satellite. Spacecraft: HS 601. USAF Sat Cat: 25071 . COSPAR: 1997-076A. Apogee: 35,799 km (22,244 mi). Perigee: 35,774 km (22,228 mi). Inclination: 0.0000 deg. Period: 1,436.10 min. Summary: Geosynchronous. Stationed over 23.9E Positioned in geosynchronous orbit at 19 deg E in 1998-1999 As of 5 September 2001 located at 19.18 deg E drifting at 0.002 deg W per day. As of 2007 Mar 10 located at 19.17E drifting at 0.012W degrees per day..

1998 August 30 - . 00:31 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC81/23. LV Family: Proton. Launch Vehicle: Proton-K/DM-2M. LV Configuration: Proton-K/DM-2M (DM3) 383-01.
  • Astra 2A - . Nation: Europe. Agency: SES. Manufacturer: El Segundo. Program: Astra. Class: Communications. Type: Civilian communications satellite. Spacecraft: HS 601. USAF Sat Cat: 25462 . COSPAR: 1998-050A. Apogee: 35,807 km (22,249 mi). Perigee: 35,766 km (22,223 mi). Inclination: 0.0000 deg. Period: 1,436.10 min. The first burn of the Proton's Block DM3 put the spacecraft into a 220 x 36,007 km x 51.6 deg transfer orbit. Astra 2A satellite was a Hughes HS-601, owned by Societe Europeene de Satellites, based in Luxembourg. Luxembourg has not registered any of the Astra satellites with the United Nations, in violation of treaty requirements. Geostationary at 28.3 degrees E. Used HS-601 XIPS ion engine for station keeping. Positioned in geosynchronous orbit at 28 deg E in 1998-1999 As of 4 September 2001 located at 28.21 deg E drifting at 0.001 deg W per day. As of 2007 Mar 10 located at 28.20E drifting at 0.028W degrees per day.

1999 June 18 - . 01:49 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC81/23. LV Family: Proton. Launch Vehicle: Proton-K/DM-2M. LV Configuration: Proton-K/DM-2M (DM3) 397-02.
  • Astra 1H - . Payload: HS-601HP . Nation: Europe. Agency: SES. Manufacturer: El Segundo. Program: Astra. Class: Communications. Type: Civilian communications satellite. Spacecraft: HS 601. USAF Sat Cat: 25785 . COSPAR: 1999-033A. Apogee: 35,799 km (22,244 mi). Perigee: 35,774 km (22,228 mi). Inclination: 0.0000 deg. Period: 1,436.10 min. Geosynchronous communications satellite. Stationed at 19 deg E. Positioned in geosynchronous orbit at 19 deg E in 1999. As of 5 September 2001 located at 19.12 deg E drifting at 0.002 deg W per day. As of 2007 Mar 10 located at 19.23E drifting at 0.019W degrees per day.

2000 September 14 - . 22:54 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELA3. LV Family: Ariane 5. Launch Vehicle: Ariane 5G. LV Configuration: Ariane 5G V130 (506).
  • Astra 2B - . Mass: 3,320 kg (7,310 lb). Nation: Europe. Agency: SES. Manufacturer: Toulouse. Program: Astra. Class: Communications. Type: Civilian communications satellite. Spacecraft: Eurostar 2000. USAF Sat Cat: 26494 . COSPAR: 2000-054A. Apogee: 35,801 km (22,245 mi). Perigee: 35,772 km (22,227 mi). Inclination: 0.1000 deg. Period: 1,436.10 min. Direct Broadcasting satellite. Launch postponed from July 25. Astra 2B was an Astrium/Toulouse Eurostar 2000+ television broadcast satellite owned by the Luxembourg-based Societe Europeene de Satellites. The satellite was to be stationed at 28.2E to replace the German DFS Kopernikus. It carried 28 Ku-band transponders. By September 19 Astra 2B was in a 31,153 x 35,762 km x 0.3 deg orbit, approaching geosynchronous altitude. Stationed at 28 deg E. Positioned in geosynchronous orbit at 28 deg E in 2000. As of 20 August 2001 located at 28.50 deg E drifting at 0.011 deg E per day. As of 2007 Mar 10 located at 28.15E drifting at 0.017W degrees per day.

2000 December 20 - . Launch Site: Kourou. Launch Complex: Kourou ELA3. LV Family: Ariane 5. Launch Vehicle: Ariane 5G. LV Configuration: Ariane 5G V138 (508).
  • Astra 2D - . Mass: 1,414 kg (3,117 lb). Nation: Europe. Agency: SES. Manufacturer: El Segundo. Program: Astra. Class: Communications. Type: Civilian communications satellite. Spacecraft: HS 376. USAF Sat Cat: 26638 . COSPAR: 2000-081A. Apogee: 35,895 km (22,304 mi). Perigee: 35,886 km (22,298 mi). Inclination: 0.2000 deg. Period: 1,441.41 min. Astra 2D was a Boeing 376HP spin-stabilised satellite, with a dry mass of around 700 kg. It was owned by the Luxembourg-based company SES and was to broadcast to the British Isles. Astra 2D was in a 292 x 35835 km x 2.2 deg transfer orbit on December 22 and was subsequently boosted into geosynchronous orbit by its Star 30 apogee kick motor. The 825 kg (dry mass) satellite carried 16 Ku-band transponders to provide direct-to-home voice, video, and data transmissions to Britain and neighboring countries after parking over 28.2 deg-E longitude. Positioned in geosynchronous orbit at 28 deg E in 2001 As of 3 September 2001 located at 28.17 deg E drifting at 0.014 deg E per day. As of 2007 Mar 10 located at 28.17E drifting at 0.014W degrees per day.

2001 June 16 - . 01:49 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC81/23. LV Family: Proton. Launch Vehicle: Proton-K/DM-2M. LV Configuration: Proton-K/DM-2M (DM3) 403-02.
  • Astra 2C - . Mass: 3,728 kg (8,218 lb). Nation: Europe. Agency: SES. Manufacturer: El Segundo. Program: Astra. Class: Communications. Type: Civilian communications satellite. Spacecraft: HS 601. USAF Sat Cat: 26853 . COSPAR: 2001-025A. Apogee: 35,805 km (22,248 mi). Perigee: 35,768 km (22,225 mi). Inclination: 0.1000 deg. Period: 1,436.10 min. Launch delayed from June 11. Astra 2C was a European (SES - Societe Europeene des Satellites, Luxembourg) geosynchronous communications Boeing 601HP spacecraft. The 3.7 tonne (including 1.2 tonne of fuel), 8 kW satellite was the fifth in the Astra series. It carried 32 Ku-band transponders to provide voice, video, and data links to Western Europe through a pair of 3 m diameter dishes, after parking over 28.2 deg-E longitude. As of 5 September 2001 located at 19.13 deg E drifting at 0.005 deg W per day. As of 2007 Mar 10 located at 19.23E drifting at 0.024W degrees per day.

2002 March 29 - . 01:29 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELA2. LV Family: Ariane. Launch Vehicle: Ariane 44L. LV Configuration: Ariane 44L-3 V149.
  • Astra 3A - . Mass: 1,495 kg (3,295 lb). Nation: Europe. Agency: SES. Manufacturer: El Segundo. Program: Astra. Class: Communications. Type: Civilian communications satellite. Spacecraft: HS 376. USAF Sat Cat: 27399 . COSPAR: 2002-015A. Apogee: 35,797 km (22,243 mi). Perigee: 35,776 km (22,230 mi). Inclination: 0.0000 deg. Period: 1,436.10 min. Communications satellite. Launch delayed from mid-March. After the Ariane third stage reached geostationary transfer orbit, JCSAT 8 separated, followed by the Mini-Spelda adapter, followed by Astra 3A. Astra 3A was a Boeing BSS-376HP, with a mass of 1495 kg full and about 750 kg empty. It joined Luxembourg-based SES Astra's fleet. As of 2007 Mar 9 located at 153.96E drifting at 0.004W degrees per day.

2002 November 25 - . 23:04 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC81/23. LV Family: Proton. Launch Vehicle: Proton-K/DM-2M. LV Configuration: Proton-K/DM-2M (DM3) 408-02. FAILURE: The Block DM upper stage failed to ignite for its second burn, leaving the satellite in parking orbit.. Failed Stage: 2.
  • Astra 1K - . Mass: 5,250 kg (11,570 lb). Nation: Europe. Agency: SES. Manufacturer: Cannes. Program: Astra. Class: Communications. Type: Civilian communications satellite. Spacecraft: Spacebus 3000. Decay Date: 2002-12-10 . USAF Sat Cat: 27557 . COSPAR: 2002-053A. Apogee: 317 km (196 mi). Perigee: 244 km (151 mi). Inclination: 51.6000 deg. Period: 90.10 min. Delayed from December 2001 and July 15, August 16 and 25. Astra 1K was to be a European (Luxembourg-based) geostationary communications spacecraft. The 5.0-ton, 13-kW spacecraft was the most massive of civilian communications spacecraft ever launched. Its 52 Ku-band and two Ka-band transponders could cover 1,100 channels and were to replace three earlier Astra satellites. However the DM-3 upper stage, after operating successfully to place itself and the satellite in parking orbit, failed to ignite for transfer orbit injection, leaving the spacecraft stranded in parking orbit. In an effort to prevent imminent re-entry, the spacecraft was raised to a circular orbit at an altitude of 290 km. Three options were considered: force re-entry over the Pacific Ocean; retrieval by a US shuttle; or use of all the fuel aboard the satellite to attempt to move it to a geostationary orbit at 19.2 E longitude. The decision was taken in December to deorbit the spacecraft, resulting in a huge insurance loss and bringing into question both continued use of the Block D series of upper stages and the 'bigger is better' comsat philosophy.

2006 April 20 - . 20:27 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC41. Launch Pad: SLC41. LV Family: Atlas V. Launch Vehicle: Atlas V 411. LV Configuration: Atlas V 411 AV-008.
  • Astra 1KR - . Payload: A2100AX. Mass: 4,332 kg (9,550 lb). Nation: Luxembourg. Agency: SES. Manufacturer: Lockheed. Program: Astra. Class: Communications. Type: Civilian communications satellite. Spacecraft: AS 2100. USAF Sat Cat: 29055 . COSPAR: 2006-012A. Apogee: 35,696 km (22,180 mi). Perigee: 35,631 km (22,140 mi). Inclination: 0.1000 deg. Period: 1,429.80 min. The first Centaur upper stage burn placed the stack into a 167 km x 22442 km x 24.8 deg transfer orbit. After a second burn the Centaur released the satellite into a 6470 km x 36240 km x 23.8 deg orbit, from which it would use its own engine to achieve final geosynchronous orbit. As of 2007 Mar 10 located at 19.18E drifting at 0.022W degrees per day.

2007 May 4 - . 22:29 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELA3. LV Family: Ariane 5. Launch Vehicle: Ariane 5ECA. LV Configuration: Ariane 5ECA V176 (536).
  • Astra 1L - . Payload: A2100AX. Mass: 4,497 kg (9,914 lb). Nation: Luxembourg. Agency: SES. Manufacturer: Lockheed. Program: Astra. Class: Communications. Type: Civilian communications satellite. Spacecraft: AS 2100. USAF Sat Cat: 31306 . COSPAR: 2007-016A. Apogee: 35,788 km (22,237 mi). Perigee: 35,784 km (22,235 mi). Inclination: 0.1000 deg. Period: 1,436.00 min. Astra 1L provided direct-to-home broadcast services to Europe from its location at 19.2 East. It also strengthened the SES in-orbit backup system, extended fleet coverage from the Canary Islands eastwards up to the Russian border, and allowed Astra 2C to be moved from 19.2 East to 28.2 to fulfill high capacity demand from the U.K. and Ireland. Astra 1L was equipped with 29 Ku + 2 Ka active transponders, which would be reduced to 27 active transponders after its first five years of operation.

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