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MIO Mercury Magnetospheric Orbiter spacecraft

Mio, formerly the Mercury Magnetospheric Orbiter (MMO), is JAXA's spin-stabilized BepiColombo spacecraft for investigating Mercury's magnetic field, plasma, thin atmosphere and dust. Its five instrument suites complement MPO's planetary measurements, allowing scientists to distinguish Mercury's own field from solar-wind effects. Following transfer-module separation in September 2026, Mio remains attached to and powered by MPO; deployment into its separate orbit is planned for December 2026.

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Identity

Aliases
MIOMioMercury Magnetospheric OrbiterMMOBepiColombo MMO
Family Name
MIO
Full Name
MIO Mercury Magnetospheric Orbiter spacecraft
Roles
orbiterresearch
Status
active
Type
spacecraft

Details

Description
Mio, formerly the Mercury Magnetospheric Orbiter (MMO), is JAXA's spin-stabilized BepiColombo spacecraft for investigating Mercury's magnetic field, plasma, thin atmosphere and dust. Its five instrument suites complement MPO's planetary measurements, allowing scientists to distinguish Mercury's own field from solar-wind effects. Following transfer-module separation in September 2026, Mio remains attached to and powered by MPO; deployment into its separate orbit is planned for December 2026.
First Flight Year
2,018

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Assets & Meta

Creation Time
August 14, 2026 at 00:35:18 UTC
Updated Time
October 29, 2026 at 13:11:32 UTC