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 powered off all sub-systems, except her master clock. The rover will use the available solar array energy to recharge her batteries.
When the batteries recover to a sufficient state of charge, Spirit will wake up and begin to communicate. When that does happen, Spirit will also trip an up-loss timer fault.
This fault response will allow the rover to communicate over Ultra-High Frequency (UHF) as well as X-band.
It is not know when the rover will wake up, so the project has been listening for any X-band signal from Spirit through the Deep Space Network every day.
The relay orbiters are also listening over any scheduled UHF relay passes. The winter solstice is just three weeks away (Sol 2261, or May 13, 2010).
Total odometry is unchanged at 7,730.50 meters (4.80 miles).
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