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Psyche Completes Mars Flyby and Stays on Track for 2029 Asteroid Arrival

The close May 15 gravity assist conserved xenon propellant by shifting speed and orbit and validated the spacecraft’s instruments ahead of its 16 Psyche rendezvous in 2029.

Overview

  • Psyche passed about 2,864 miles above Mars on May 15, 2026, using the planet’s gravity to alter its path without burning onboard propellant.
  • Flight-team analysis of Deep Space Network Doppler and radio data confirmed Mars gave Psyche roughly a 1,000 mile-per-hour speed boost and about a 1-degree change in orbital plane.
  • Engineers powered the multispectral imagers, magnetometers, and gamma-ray and neutron spectrometer during the encounter and captured thousands of unique images for calibration.
  • Early magnetometer readings may show Psyche crossed Mars’ bow shock and teams are now processing and cross-checking the datasets with other Mars missions to refine instrument performance.
  • With the flyby complete the spacecraft has resumed solar-electric ion thrusting and remains on course to insert into orbit around asteroid 16 Psyche in summer 2029 to map its metal-rich surface.