Hélios 1B
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For other spacecraft named Helios, see Helios (disambiguation) § Space.
Hélios 1A and Hélios 1B were French military photo-reconnaissance satellites in which Italy and Spain also participated. Hélios 1A was launched from the Guiana Space Centre, French Guiana on 3 December 1999 at 16:22:00 UTC. The spacecraft rode aboard an Ariane 4 rocket which also carried the French military reconnaissance satellite Clementine.
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