Initial Operational Capability (IOC): 1995
Total Production: 2
Unitary Cost: USD$1.0 billion
Origin: France
Corporations: EADS Astrium
Parent System: Helios
Initial Operational Capability (IOC): 1995
Total Production: 4
Total Cost: USD$4.9 billion
Family Members: Helios II
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Description: The Helios is a earth observation satellite owned by France and jointly sponsored by Italy (14%) and Spain (7%). The satellite operates at an altitude of 700 kilometers on a polar sun-synchronous orbit and has been equipped with a CCD-TV imaging sensor with an estimated resolution of one meter.

The main ground control station is located in France, but there are other minor control stations located in the other partner countries: Italy and Spain. However, France remains the most priority user of Helios earth observation system with the wider access to data collected by the Helios satellites.

The first Helios satellite, Helios 1A, was launched in 1995 and the second one, Helios 1B, was put into orbit in 1999.

Helios Specifications

Orbit: 700 kilometer (435 mile)
Service Life: 5 year (1,825 day)
Weight: 2,500 kilogram (5,511 pound)
CEP: Circular Error Probable
Meters (m)   Kilometers (km)   Nautic Miles (nm)   Inch (in)   Yard (yd)   Foot (ft)   Millimeter (mm)
Pound (lb)   Kilogram (kg)   kN (KiloNewton)   Ton (t)
Meters per Second (mps)   Kilometers per Hour (kph)   Knot (kt)   Miles per Hour (mph)
Liter (l)   Galon (gl)
Year (yr)   Minutes (min)   Second (sec)
Shaft-Horse-Power (shp)

Operators & Related Equipment


Grand Total ?3

Helios Spacecraft Listing

SerialCountry - Launch Rocket - SiteStatusLaunch DateOperationalRetired
Helios IA Ariane 4 - Kourou7 Jul 1995199510 Feb 2012
Helios IB ? - ?1999--

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