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Mars Opportunity rover in standby as commanding moratorium ends

Date:
April 30, 2013
Source:
NASA/Jet Propulsion Laboratory
Summary:
During a moratorium on commanding this month while Mars passed nearly behind the sun -- a phase called solar conjunction -- NASA's Mars Exploration Rover Opportunity entered a type of standby mode.

Artist concept of Mars Exploration Rover.
Credit: NASA/JPL-Caltech

During a moratorium on commanding this month while Mars passed nearly behind the sun -- a phase called solar conjunction -- NASA's Mars Exploration Rover Opportunity entered a type of standby mode.

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Mission controllers learned of the changed status on April 27 when they first heard from Opportunity after the period of minimized communication during the solar conjunction. They prepared fresh commands today (April 29) for sending to the rover to resume operations.

Initial indications suggest the rover sensed something amiss while doing a routine camera check of the clarity of the atmosphere on April 22.

"Our current suspicion is that Opportunity rebooted its flight software, possibly while the cameras on the mast were imaging the sun," said Mars Exploration Rover Project Manager John Callas of NASA's Jet Propulsion Laboratory, Pasadena, Calif. "We found the rover in a standby state called automode, in which it maintains power balance and communication schedules, but waits for instructions from the ground. We crafted our solar conjunction plan to be resilient to this kind of rover reset, if it were to occur."

Opportunity has been working on Mars for more than nine years. NASA's other Mars rover, Curiosity, which landed last year, is also nearing the end of its solar conjunction moratorium on commanding. Curiosity has reported coming through the conjunction in full health. Controllers plan to send Curiosity's first set of post-conjunction commands on May 1.

JPL, a division of the California Institute of Technology in Pasadena, manages both rover projects for NASA's Science Mission Directorate, Washington. For more information about Opportunity, visit http://www.nasa.gov/rovers and http://marsrovers.jpl.nasa.gov . You can follow the project on Twitter and on Facebook at: http://twitter.com/MarsRovers and http://www.facebook.com/mars.rovers .


Story Source:

The above story is based on materials provided by NASA/Jet Propulsion Laboratory. Note: Materials may be edited for content and length.


Cite This Page:

NASA/Jet Propulsion Laboratory. "Mars Opportunity rover in standby as commanding moratorium ends." ScienceDaily. ScienceDaily, 30 April 2013. <www.sciencedaily.com/releases/2013/04/130430102706.htm>.
NASA/Jet Propulsion Laboratory. (2013, April 30). Mars Opportunity rover in standby as commanding moratorium ends. ScienceDaily. Retrieved April 21, 2015 from www.sciencedaily.com/releases/2013/04/130430102706.htm
NASA/Jet Propulsion Laboratory. "Mars Opportunity rover in standby as commanding moratorium ends." ScienceDaily. www.sciencedaily.com/releases/2013/04/130430102706.htm (accessed April 21, 2015).

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