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Fluxgate Magnetometer (MAG)

NSSDCA ID: 2004-006A-14

Mission Name: Rosetta
Principal Investigator:Prof. Karl-Heinz Glassmeier


The Fluxgate Magnetometer (MAG) is designed to measure permanent and/or induced magnetic properties of the comet nucleus and the magnetic field in the comet-solar wind interaction zone. The MAG is part of the Rosetta Plasma Consortium (RPC) which consists of four additional instruments: the Langmuir Probe Instrument (LAP), the Ion and Electron Sensor (IES), the Ion Composition Analyser (ICA), and the Mutual Impedance Probe (MIP). The scientific objectives of the RPC instruments are to study inner coma structure, dynamics, and aeronomy, characterize the development of cometary activity and the formation and evolution of plasma tail, and investigate solar-wind and asteroid interaction.

The MAG consists of two ultralight triaxial fluxgate magnetometers mounted on a long boom, the outboard one close to the end of the boom and the inboard one 10 to 30 cm closer to the spacecraft. The magnetic field can be measured from -16384 to +16384 nT in 0.031 nT steps. The sampling rate can be varied from 1 to 50 times per second. Onboard control is provided by the Plasma Interface Unit (PIU), a common interface to the spacecraft for the RPC experiments. The MAG sensors have a mass of 0.096 kg; the MAG electronics, which are shared with the PIU, LAP, and MIP, have a mass of 3.291 kg.

Alternate Names

  • MAG
  • Rosetta/MAG
  • urn:esa:psa:context:instrument:ro.rpcmag

Facts in Brief

Mass: 0.096 kg
Power (avg): 0.7 W

Funding Agency

  • European Space Agency (International)


  • Planetary Science: Small Bodies
  • Planetary Science: Fields and Particles

Additional Information

Questions and comments about this experiment can be directed to: Dr. David R. Williams



NameRoleOriginal AffiliationE-mail
Prof. Karl-Heinz GlassmeierPrincipal InvestigatorTechnische Universitat

Selected References

  • Trotignon, J. G., et al., The Rosetta Plasma Consortium: Technical realization and scientific aims, Adv. Space Res., 24, No. 9, 1149-1158, June 1999.
  • Carr, C., et al., RPC: The Rosetta Plasma Consortium, Space Sci. Rev., 128, 629-647, doi:10.1007/s11214-006-9136-4, 2007.
  • Glassmeier, K.-H., et al., RPC-MAG The Fluxgate Magnetometer in the ROSETTA Plasma Consortium, Space Sci. Rev., 128, 649-670, doi:10.1007/s11214-006-9114-x, 2007.

Other Related Data/Information

Image of EASEP

Rosetta RPC

RPC Home Page (Rosetta Plasma Consortium)

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