Perseverance Pinpoints Its Location at ‘Mala Mala’
NASA/JPL-Caltech
Description
Using its navigation cameras, NASA’s Perseverance Mars rover captured the five stereo pairs of images that make up this panorama on Feb. 2, 2026, the 1,762nd day, or sol, of the mission. A new technology called Mars Global Localization matched this 360-degree view to onboard orbital imagery from the agency’s Mars Reconnaissance Orbiter (MRO), enabling the rover to pinpoint its location on the Red Planet for the first time without human help. The rover is in a relatively featureless area dubbed “Mala Mala” on the rim of Jezero Crater.
NASA’s Jet Propulsion Laboratory developed Mars Global Localization, which features an algorithm that rapidly compares panoramic navcam shots to MRO orbital imagery. Running on a powerful processor that Perseverance originally used to communicate with the now-retired Ingenuity Mars Helicopter, the algorithm takes about two minutes to pinpoint the rover’s location within some 10 inches (25 centimeters).
Like NASA’s previous Mars rovers, Perseverance tracks its position using what’s called visual odometry, analyzing geologic features in camera images taken every few feet while accounting for wheel slippage. As tiny errors in the process add up over the course of each drive, the rover becomes increasingly unsure about its exact location. On long drives, the rover’s sense of its position can be off by than 100 feet (up to 35 meters). Believing it could be too close to hazardous terrain, the rover may prematurely end its drive and wait for instructions from Earth.
After each drive comes to a halt, the rover sends a 360-degree panorama to Earth, where mapping experts match the imagery with shots from MRO. The team then sends the rover its location and instructions for its next drive. That process can take a day or more. With Mars Global Localization, the rover can compare the images itself, determine its location, and roll ahead on its pre-planned route.
Managed for NASA by Caltech, JPL built and manages operations of the Perseverance rover. JPL also manages MRO for the agency’s Science Mission Directorate in Washington as part of its Mars Exploration Program portfolio.
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