Boulder Marking Bennu’s Prime Meridian

This image shows a portion of the boulder that marks Bennu’s prime meridian. It was taken by the PolyCam camera on NASA’s OSIRIS-REx spacecraft on April 4 from a distance of 3 miles (4.7 km). The field of view is 216 ft (65.7 m). For scale, the highest point visible on the prime meridian boulder is 65 ft (20 m) tall, which is the same height as Delicate Arch in Arches National Park in Utah. The image was obtained during Flyby 5A of the mission’s Detailed Survey: Baseball Diamond phase. When the image was taken, the spacecraft was over the northern hemisphere, pointing PolyCam east and downward toward the southern hemisphere.

Date Taken: April 4, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona


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