Pasadena CA (JPL) Jun 16, 2010
Spirit remains silent at her location called "Troy" on the west side of Home Plate. No communication has been received from the rover since Sol 2210 (March 22, 2010).
It is likely that Spirit has experienced a low-power fault and has turned off all sub-systems, including communication and gone into a deep sleep. While sleeping, the rover will use the available solar array energy to recharge her batteries.
The rover electronics module (REM) is expected to get colder than ever before. When the batteries recover to a sufficient state of charge, Spirit will wake up and begin to communicate over X-band and Ultra-High Frequency (UHF).
There is the additional risk that the rover may trip a mission clock fault.
If that happens, the rover would remain asleep until the batteries have recharged sufficiently and there is enough sunlight on the solar arrays to wake the rover.
With the passing of the southern winter solstice (on May 13, 2010), solar energy levels and temperatures should be improving.
Total odometry is unchanged at 7,730.50 meters (4.80 miles).
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Opportunity Could Resume Driving Soon
Pasadena CA (JPL) Jun 15, 2010
The pancam mast assembly (PMA) azimuth error from Sol 2257 (May 30, 2010), is still being resolved on Opportunity, although with a likely explanation in hand. Diagnostics were run on Sols 2259, 2261, 2262 and 2265 (June 1, 3, 4 and 8). In every case, the diagnostics indicated a healthy PMA azimuth actuator. Further investigation now suggests that the miniature thermal emission spectr ... read more
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