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SEAM (Small Explorer for Advanced Missions) is a collaborative project aiming at developing, building, launching and operating a 3U CubeSat nanosatellite for science-grade measurements of magnetic and electric fields in the Earth ionosphere.

The consortium brings together eight partners from five European countries. An overarching goal for the project is to jointly develop a nanosatellite platform for advanced scientific missions, thus allowing the participating small and medium enterprises to offer new solutions to the high end of the nanosatellite market.

The objective of the SEAM satellite is to contribute to three scientific areas by providing high resolution measurements of three components of DC and AC magnetic field and one component of AC electric field in the ionosphere for:

  • Characterization of auroral current systems;
  • Monitoring of natural VLF and ELF waves;
  • Observation of antropogenic VLF and ELF waves.

Contributing to geomagnetic field modeling is beyond the scope of the mission, but is considered as a benchmark for DC magnetometer performance.

The satellite was launched on 28 November 2017 as a copassenger on a Soyuz-2-1b Fregat rocket, but was lost due to an upper stage problem.

A reflight under the name SEAM 2.0 took place in July 2019.

Nation: Sweden
Type, Application: Technology, education, science (ionosphere)
Operator: KTH, ÅAC Microtec, ECM, LEMI, Space BLE, GOMSpace, SSC, Kayser Italia
Contractors: KTH, ÅAC Microtec, ECM, LEMI, Space BLE, GOMSpace, SSC, Kayser Italia
Configuration: CubeSat (3U)
Propulsion: None
Power: Solar cells, batteries
Lifetime: 1 year
Mass: 4 kg
Orbit: 584 km × 602 km, 97.76° (planned)
Satellite COSPAR Date LS Launch Vehicle Remarks
SEAM 2017-F05 28.11.2017 Vo LC-1S F Soyuz-2-1b Fregat with Meteor-M 2-1, LEO Vantage 2, Baumanets 2, IDEA-OSG 1, AISSat 3, Helios-Wire BIU, Landmapper-BC 3, Lemur-2 58-67, D-Star One
SEAM 2.0 2019-038R ? 05.07.2019 Vo LC-1S Soyuz-2-1b Fregat with Meteor-M 2-2, ICEYE X4, ICEYE X5, CarboNIX, DoT 1, Momentus X1, Lemur-2 100, ..., 107, NSLSat 1, SONATE, JAISAT 1, EXOCONNECT, LightSat, UTE-Ecuador, Lucky-7, MOVE 2b, MTCube, TTÜ101, BeeSat 9, BeeSat 10, 11, 12, 13, AmGU 1, Sokrat, VDNH-80

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