NASA's OSIRIS-REx Executes First Asteroid Approach Maneuver

NASA’s OSIRIS-REx Executes First Asteroid Approach Maneuver
Illustration of NASA’s OSIRIS-REx spacecraft during a burn of its main engine. Credit: University of Arizona

NASA's OSIRIS-REx spacecraft executed its first Asteroid Approach Maneuver (AAM-1) today putting it on course for its scheduled arrival at the asteroid Bennu in December. The spacecraft's main engine thrusters fired in a braking maneuver designed to slow the spacecraft's speed relative to Bennu from approximately 1,100 mph (491 m/sec) to 313 mph (140 m/sec). The mission team will continue to examine telemetry and tracking data as they become available and will have more information on the results of the maneuver over the next week.

During the next six weeks, the OSIRIS-REx spacecraft will continue executing the series of asteroid approach maneuvers designed to fly the spacecraft through a precise corridor during its final slow approach to Bennu. The last of these, AAM-4, scheduled for Nov. 12, will adjust the spacecraft's trajectory to arrive at a position 12 miles (20 km) from Bennu on Dec. 3. After arrival, the spacecraft will initiate asteroid proximity operations by performing a series of fly-bys over Bennu's poles and equator.


Explore further

NASA tests thrusters on journey to asteroid Bennu

Provided by NASA
Citation: NASA's OSIRIS-REx Executes First Asteroid Approach Maneuver (2018, October 2) retrieved 23 October 2019 from https://phys.org/news/2018-10-nasa-osiris-rex-asteroid-approach-maneuver.html
This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.
11 shares

Feedback to editors

User comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more