Prisma (satellite project)

Prisma is a satellite project led by the Swedish Space Corporation (SSC) which consist of two satellites that fly in formation.[1] Prisma is operated in collaboration with CNES, the French space agency, which provides the radiofrequency metrology system that enables the satellites to fly in close formation while autonomously avoiding collisions.[3]

Prisma satellite during integration
Mission typeTechnology demonstrator
OperatorSwedish National Space Board, DLR, CNES
COSPAR IDMango: 2010-028B
Tango: 2010-028F
SATCAT no.Mango: 36599
Tango: 36827
Mission duration1 year planned
11 years, 4 months and 8 days elapsed
Spacecraft properties
ManufacturerSaab Ericsson Space, Omnisys Instruments, ECAPS
Launch massMango: 145 kg (320 lb)
Tango: 50 kg (110 lb)
DimensionsMango: 80 cm × 130 cm (31 in × 51 in)
Tango: 80 cm × 31 cm (31 in × 12 in)
PowerMango: 300 watts
Tango: 90 watts
Start of mission
Launch date15 June 2010, 14:42:16 UTC (2010-06-15UTC14:42:16Z)[1]
RocketDnepr rocket
Launch siteDombarovsky 370/13
ContractorISC Kosmotras
Orbital parameters
Reference systemGeocentric
Semi-major axis7,086 kilometres (4,403 mi)[2]
Perigee altitude668.3 kilometres (415.3 mi)[2]
Apogee altitude749 kilometres (465 mi)[2]
Inclination98.4 degrees[2]
Period99 minutes[2]
Epoch24 March 2015, 11:08:39 UTC[2]

It was launched, along with the PICARD spacecraft, on 15 June 2010 on a Dnepr launcher from Dombarovskiy Cosmodrome, near Yasny, Russia. Its primary objective is to test autonomous formation flying.[1][4] A secondary objective was to flight test a new monopropellant thruster using ammonium dinitramide (ADN) propellant.[5]

On 12 August 2010, SSC reported that the two satellites, called Mango and Tango, had separated from each other for the first time.[6]