Swarm (spacecraft)

Swarm
Artist's view of the three Swarm spacecraft
Mission typeEarth's magnetic field observation
OperatorESA
COSPAR IDSWARM A: 2013-067B
SWARM B: 2013-067A
SWARM C: 2013-067C
SATCAT no.SWARM A: 39452
SWARM B: 39451
SWARM C: 39453
WebsiteESA Swarm homepage
Mission duration4 years (planned)
11 years, 10 days (elapsed)
Spacecraft properties
ManufacturerAstrium
Launch mass468 kg
Dry mass369 kg
Dimensions9.1 m × 1.5 m × 0.85 m
Power608 watts
Start of mission
Launch date22 November 2013,
12:02:29 UTC
RocketRokot/Briz-KM
Launch sitePlesetsk, Site 133/3
ContractorEurockot
Orbital parameters
Reference systemGeocentric
RegimePolar orbit
Perigee altitudeSwarm A: ≤460 kilometres (290 mi)
Swarm C: ≤460 kilometres (290 mi)
Swarm B: ≤530 kilometres (330 mi)
Apogee altitudeSwarm A: ≤460 kilometres (290 mi)
Swarm C: ≤460 kilometres (290 mi)
Swarm B: ≤530 kilometres (330 mi)
InclinationSwarm A: 87.4°
Swarm C: 87.4°
Swarm B: 88.0°
Mean motion15
Transponders
BandS Band
Frequency2 GHz
Bandwidth6Mbit/s download
4 kbit/s upload
Instruments
VFM: Vector Field Magnetometer
ASM: Absolute Scalar Magnetometer
EFI: Electric Field Instrument
ACC: Accelerometer
LRR: Laser Range Reflector

Swarm is a European Space Agency (ESA) mission to study the Earth's magnetic field. High-precision and high-resolution measurements of the strength, direction and variations of the Earth's magnetic field, complemented by precise navigation, accelerometer and electric field measurements, will provide data for modelling the geomagnetic field and its interaction with other physical aspects of the Earth system. The results offer a view of the inside of the Earth from space, enabling the composition and processes of the interior to be studied in detail and increase our knowledge of atmospheric processes and ocean circulation patterns that affect climate and weather.


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