BackForwardInstrument:  KSEM/MG (SOSMAG) 

Instrument details
Full name Korean Space wEather Monitor / Magnetometer. ESA acronym is SOSMAG.
Purpose To measure the magnetic field in the platform environment
Short description 3-axis magnetometer operating in the range ±4 to ±64,000 nT with resolution ±1 nT @ maximum of the dynamics
Background Part of the Korean Space wEather Monitor (KSEM) together with a Particle Detector (PD) and a Charging Monitor (CM). Actually developed under the ESA THEMIS programme.
Scanning Technique In-situ measurement in GEO
Resolution N/A
Coverage / Cycle Sampling at 0.1 s intervals
Mass Power Data Rate


Providing Agency ESA
Instrument Maturity Flown on operational programme
Utilization Period: 2019 to 2029
Last update: 2024-01-16
Detailed characteristics
Satellites this instrument is flying on

Note: a red tag indicates satellites no longer operational, a green tag indicates operational satellites, a blue tag indicates future satellites

Instrument classification
  • Solar and space environment monitors
  • Field or radiowave sensor
WIGOS Subcomponents
  • Subcomponent 1
  • In-situ plasma probes, and energetic particle spectrometers and magnetometers at GEO and LEO, and magnetic field at GEO
  • Magnetometer at GEO
Mission objectives
Primary mission objectives
  • Geomagnetic field
Evaluation of Measurements

The following list indicates which measurements can typically be retrieved from this category of instrument. To see a full Gap Analysis by Variable, click on the respective variable.

Note: table can be sorted by clicking on the column headers
Note: * Primary mission objective.
VariableRelevance for measuring this variableOperational limitationsExplanation
Geomagnetic field*3 - highNo specific limitation.Platform, vectorial, wide dynamics, high resolution