Full Breakdown
NASA's Psyche Spacecraft Executes Mars Gravity-Assist Flyby En Route to Metal-Rich Asteroid
5/13/2026, 11:22:18 AM
Mars Gravity-Assist Flyby
On 15 May 2026, Psyche passed within 2,800 mi (4,500 km) of Mars. Mars’ gravity increased the spacecraft’s speed to 12,333 mph (19,848 kph), providing a propellant-saving boost toward asteroid 16 Psyche.
Mission Background
Launched 13 Oct 2023, Psyche uses solar-electric propulsion and will travel to asteroid 16 Psyche, a 173-mi (280 km) metallic body thought to be the exposed core of an early planetesimal.
Personnel
Sarah Bairstow (mission planning lead, NASA JPL); Lindy Elkins-Tanton (principal investigator, UC Berkeley); Jim Bell (imager lead, Arizona State University).
Timeline
- 13 Oct 2023 – Launch
- 23 Feb 2026 – Trajectory correction maneuver
- 7 May 2026 – First raw Mars images released
- 15 May 2026 – Mars flyby at 2,800 mi altitude
- 2029 – Arrival at 16 Psyche
Technical Snapshot
The probe will capture thousands of multispectral images, operate a magnetometer, and run a gamma-ray/neutron spectrometer.
Scientific Goals
The encounter serves to calibrate the imager on a planetary disk, test the magnetometer and spectrometer, search for a faint dusty torus around Mars, and search for moonlets around the asteroid.
Official Statements
Mission planners confirmed the spacecraft is on target and the flight computer is programmed for May. The team called the flyby a chance to calibrate instruments and conduct observations. The principal investigator highlighted the dual benefit of a gravity assist and instrument testing, calling a powered-up suite “the icing on the cake,” while the imager lead noted the high-phase-angle view will yield calibration data and striking images.
Collaborative Support
NASA’s Mars Reconnaissance Orbiter, Mars Odyssey, Curiosity, Perseverance, and ESA’s Mars Express and ExoMars Trace Gas Orbiter will aid navigation; DSN tracking will verify velocity changes.
Verbatim Quotes
- "We are now exactly on target for the flyby, and we’ve programmed the flight computer with everything that the spacecraft will do throughout May." — Sarah Bairstow, Mission Planning Lead, NASA JPL
- "If all our instruments are powered up, and we can do important testing and calibration of the science instruments, that would be the icing on the cake." — Lindy Elkins-Tanton, Principal Investigator, Psyche Mission, UC Berkeley
- "We are approaching Mars at a very high phase angle, which means we are catching up with the planet from its night side with only a sliver of sunlight creating a thin crescent." — Jim Bell, Imager Instrument Lead, Arizona State University
- "This is our first opportunity in flight to calibrate Psyche's imager with something bigger than a few pixels, and we'll also make observations with the mission's other science instruments." — Sarah Bairstow, Mission Planning Lead, NASA JPL
What’s Next
After the assist, Psyche will head toward the asteroid belt, aiming for a 2029 arrival at 16 Psyche, where it will orbit the metal-rich body to map its surface, composition, and magnetic field.
