PROBA-3
Space probe
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Proba-3 is a dual probe technological demonstration mission by the European Space Agency devoted to high precision formation flying to achieve scientific coronagraphy. Wikipedia
Launch date: September 2024 (planned)
Perigee altitude: 600 kilometres (370 mi)
Dimensions: CSC: 1.1 by 1.8 by 1.7 metres (3.6 ft × 5.9 ft × 5.6 ft); OSC: 0.9 by 1.4 metres (3.0 ft × 4.6 ft)
Eccentricity: 0.8111
Inclination: 59 degrees
Launch mass: CSC and OSC in stack: 550 kilograms (1,210 lb)