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Phobos

active
Technology DemonstrationLEOCOSPAR 2026-067YLaunched 3/30/2026
Admin Edit
Mission & Launch
Launch Mission
Transporter-16
Launch Vehicle
Falcon 9 FT5
Launch Date
3/30/2026
Orbit & Mass
Orbit Class
LEO
Altitude
511.5 km
Inclination
97.45 deg
Dry Mass
5 kg
Total Mass
5 kg
Payload Classification
Mission Type
Technology Demonstration
Payload Category
TECH
Payload Class
B
Organizations
Operator
Aethero Space
Manufacturer
EnduroSat
Registry
COSPAR ID
2026-067Y
Track
Mentions
31
All verified mentions of this spacecraft in source documents.
0.0-5.0
Actions

MIRS will operate in the near-infrared to analyze Phobos’ surface composition and identify minerals, water, or organic compounds.

CapabilityValue 4.0May 20, 2026Final preparations underway for MMX mission to Mars and its moons

Idefix® will explore Phobos’ very weak gravity environment and study the moon’s surface properties to support sample collection planning.

Plan
Page1of2
Capability
Value 2.8
May 20, 2026
Final preparations underway for MMX mission to Mars and its moons

The MMX mission will explore Mars’ moons Phobos and Deimos.

GeneralValue 3.2May 20, 2026Final preparations underway for MMX mission to Mars and its moons

The MMX spacecraft will analyze Phobos and Deimos’ composition, investigate their origin, and return samples from Phobos to Earth.

CapabilityPlanValue 4.0May 20, 2026Final preparations underway for MMX mission to Mars and its moons

CNES is validating moon observation scenarios for the MMX mission and designing two types of trajectories around Phobos, including low orbits for the probe during Idefix®’s mission.

PlanCapabilityValue 4.0May 20, 2026Final preparations underway for MMX mission to Mars and its moons

The test campaign included a heliotropic sequence in which the Prototypix prototype tilted toward the Sun to simulate Idefix®’s battery-recharging maneuver on Phobos.

CapabilityPlanValue 4.0Dec 18, 2025MMX mission: behind the scenes of Idefix® rover testing

The test campaign included joint activities in which DLR used CNES’s 3D scanner to view terrain in three dimensions while CNES used DLR’s tracking system to monitor the rover’s progress in the Phobos yard.

CapabilityRelationshipsValue 4.0Dec 18, 2025MMX mission: behind the scenes of Idefix® rover testing

Idefix® will attempt to land on and scout Phobos.

PlanValue 3.5Dec 18, 2025MMX mission: behind the scenes of Idefix® rover testing

JAXA’s MMX mission will depart for Phobos at the end of 2026.

PlanValue 4.0Dec 18, 2025MMX mission: behind the scenes of Idefix® rover testing

JAXA’s MMX mission is designed to explore Phobos and Deimos and investigate the origin of Mars’s tiny moons.

GeneralCapabilityValue 4.0Dec 18, 2025MMX mission: behind the scenes of Idefix® rover testing

MMX aims to collect samples from the surface of Phobos, one of Mars' moons, and bring them back to Earth.

PlanValue 3.5Nov 11, 2025火星衛星探査計画「MMX」への応援メッセージを募集–探査機に搭載、2026年度に打ち上げ予定

MMX will perform scientific observations of Phobos' terrain, internal structure, composition, and gravity.

CapabilityValue 4.0Nov 11, 2025火星衛星探査計画「MMX」への応援メッセージを募集–探査機に搭載、2026年度に打ち上げ予定

The MMX Phobos sample return mission is scheduled to launch in 2026.

PlanGeneralValue 4.0Sep 29, 2025JAXA's Hiroshi Yamakawa says MMX Phobos sample return mission almost ready, undergoing final testing. Launch in 2026, return to Earth with samples of the Martian moon in 2031. #IAC2025

JAXA's MMX Phobos sample return mission is undergoing final testing.

PlanValue 3.5Sep 29, 2025JAXA's Hiroshi Yamakawa says MMX Phobos sample return mission almost ready, undergoing final testing. Launch in 2026, return to Earth with samples of the Martian moon in 2031. #IAC2025

The MMX Phobos sample return mission is expected to return to Earth with samples of the Martian moon in 2031.

PlanValue 4.0Sep 29, 2025JAXA's Hiroshi Yamakawa says MMX Phobos sample return mission almost ready, undergoing final testing. Launch in 2026, return to Earth with samples of the Martian moon in 2031. #IAC2025

MMX is scheduled to launch towards the Mars system in 2026, with plans to land on Phobos in 2029 and return samples to Earth in 2031.

PlanGrowthValue 5.0Mar 13, 2025Asteroidensonde nahm Marsmond Deimos ins Visier

The rover Idefix will investigate the geological, physical, and mineralogical properties of Phobos's surface and demonstrate mobility in low gravity.

CapabilityGeneralValue 4.0Mar 13, 2025Asteroidensonde nahm Marsmond Deimos ins Visier

The JAXA MMX mission aims to investigate the origins of the Martian moons Phobos and Deimos and the process of planetary formation in the solar system.

GeneralValue 3.0Mar 13, 2025Asteroidensonde nahm Marsmond Deimos ins Visier

Phobos, lacking an atmosphere, has not experienced contamination from water.

GeneralValue 2.0Jan 2, 2024The longstanding mystery of the moons of Mars and the mission that could solve it

The Japan Aerospace Exploration Agency (JAXA) will launch the Martian Moon eXploration (MMX) mission to Phobos and Deimos in September 2024.

PlanGeneralValue 4.0Jan 2, 2024The longstanding mystery of the moons of Mars and the mission that could solve it