Composante Spatiale Optique

Composante Optique Spatiale
NamesCSO-1
CSO-2
CSO-3
Mission typeMilitary reconnaissance
OperatorCNES / DGA
COSPAR ID2018-106A (CSO-1)
2020-104A (CSO-2)
SATCAT no.43866 (CSO-1)
47305 (CSO-2)
Mission duration10 years (planned)
Spacecraft properties
BusCSO
ManufacturerAirbus Defence and Space (satellite)
Thales Alenia Space
(optical payload)
Launch mass3,655 kg (8,058 lb) (CSO-1)
3,652 kg (8,051 lb) (CSO-2)
Start of mission
Launch date19 December 2018,
13:37:00 UTC (CSO-1)
29 December 2020,
16:42:07 UTC (CSO-2)
2024 (planned) (CSO-3)
RocketSoyuz ST-A (CSO-1, CSO-2)
Ariane 62 (CSO-3)
Launch siteCentre Spatial Guyanais, ELS and ELA-4
ContractorProgress Rocket Space Centre, Arianespace
Orbital parameters
Reference systemGeocentric orbit
RegimeSun-synchronous orbit
Altitude800 km (500 mi) (CSO-1)
480 km (300 mi) (CSO-2)
Inclination97.3°

Composante Spatiale Optique (CSO; English: Optical Space Component) is a French military Earth observation satellite program of third generation. It replaces the Helios 2 satellites. It is sometimes referred to as the MUltinational Space-based Imaging System for Surveillance, Reconnaissance and Observation (MUSIS program).