Elliptical primary mirror: 1.1 x 0.7 metres
Mission lifetime: 4 years
Payload mass: ~300 kg
Dry mass: ~950 kg
Launch mass: ~1200kg
Launch vehicle: Ariane 6-2. Launch shared with Comet Interceptor.
The ARIEL mission payload is developed by a consortium of more than 50 institutes from 17 ESA countries – which include the UK, France, Italy, Poland, Belgium, Spain, the Netherlands, Austria, Denmark, Ireland, Norway, Sweden, Czech Republic, Hungary, Portugal, Germany, Estonia – plus a NASA contribution.