Encyclopedia Astronautica
Helios


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Helios Chronology


1995 July 7 - . 16:23 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELA2. LV Family: Ariane. Launch Vehicle: Ariane 40. LV Configuration: Ariane 40-3 V75.
  • Helios 1A - . Mass: 2,537 kg (5,593 lb). Nation: France. Agency: CNES; DGA. Program: Helios. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Helios 1A-1B. USAF Sat Cat: 23605 . COSPAR: 1995-033A. Apogee: 682 km (423 mi). Perigee: 680 km (420 mi). Inclination: 98.1000 deg. Period: 98.40 min.

1999 December 3 - . 16:22 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELA2. LV Family: Ariane. Launch Vehicle: Ariane 40. LV Configuration: Ariane 40-3 V124.
  • Helios 1B - . Mass: 2,750 kg (6,060 lb). Nation: France. Agency: DGA. Manufacturer: Toulouse. Program: Helios. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Helios 1A-1B. USAF Sat Cat: 25977 . COSPAR: 1999-064A. Apogee: 682 km (423 mi). Perigee: 680 km (420 mi). Inclination: 98.2000 deg. Period: 98.40 min. French optical military reconnaisance satellite based on Spot 4. Taken out of service in mid-October 2004, when the orbit of the satellite was lowered to 637 x 640 km, taking it out of the path of Helios 1A and the Helios 2A that would be launched in December 2004.

2004 December 18 - . 16:26 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELA3. LV Family: Ariane 5. Launch Vehicle: Ariane 5Gp. LV Configuration: Ariane 5G+ V165 (520).
  • Helios 2A - . Mass: 4,200 kg (9,200 lb). Nation: France. Agency: DGA. Manufacturer: EADS Astrium. Program: Helios. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: Helios 2. USAF Sat Cat: 28492 . COSPAR: 2004-049A. Apogee: 690 km (420 mi). Perigee: 688 km (427 mi). Inclination: 98.0770 deg. Period: 98.39 min. Summary: First of two new-generation French military surveillance satellites. Last flight of Ariane 5G model. Launch delayed from December 10..

2009 December 18 - . 16:26 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELA3. LV Family: Ariane 5. Launch Vehicle: Ariane 5GS. LV Configuration: Ariane 5GS s/n L532.
  • Helios 2B - . Mass: 4,200 kg (9,200 lb). Nation: France. Agency: Arianespace. Program: Helios. Spacecraft: SPOT-5A-5B. USAF Sat Cat: 36124 . COSPAR: 2009-073A. Apogee: 680 km (420 mi). Perigee: 680 km (420 mi). Inclination: 98.0000 deg. Summary: French military surveillance satellite..

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