Prisma
Spacecraft and satellites
Prisma is a satellite project led by the Swedish Space Corporation which consist of two satellites that fly in formation. Wikipedia
Launch date: June 15, 2010
Dimensions: Mango: 80 cm × 130 cm (31 in × 51 in); Tango: 80 cm × 31 cm (31 in × 12 in)
Apogee altitude: 749 kilometres (465 mi)
Launch mass: Mango: 145 kg (320 lb); Tango: 50 kg (110 lb)
Mission duration: 1 year planned; 13 years, 10 months and 10 days elapsed
Period: 99 minutes