Efforts are nearing completion to prepare the rover for winter. Because of the low power levels, multi-sol plans are being developed with reduced communication activity to save energy. Only one or two planning cycles occur each week.

These plans have a single uplink to the rover and few Ultra-High Frequency (UHF) downlinks to return the data. The new long-range UHF communication table is onboard and various settings for winter are being finalized.

As of Sol 2191 (March 2, 2010), the rover solar array energy production was to 153 watt-hours with an atmospheric opacity (tau) of 0.331 and a dust factor of 0.510. Total odometry is unchanged at 7,730.50 meters (4.80 miles).

Driving Around Material Ejected From Young Crater
Opportunity is continuing the circumnavigation of "Concepcion" crater. During this period Opportunity traversed around a ray of ejecta that is comprised of rock debris from the impact that formed the crater.

In Mars Reconnaissance Orbiter images these rocks and their shadows appear as dark streaks extending to the south and southwest from Concepcion crater.

Data collected on Sols 2165 (Feb. 25, 2010) and 2166 (Feb. 26, 2010), indicated potential targets for direct measurements with the Instrument Deployment Device (IDD). A 22-meter (72-foot) drive along the ejecta ray was performed on Sol 2167 (Feb. 27, 2010).

However, because of the assessed mobility risks associated with this part of the jumbled rock field, no in-situ targets were approached.

Instead the rover continued the circumnavigation campaign with an 18-meter (59-foot) drive around the ejecta ray on Sol 2171 (March 3, 2010).

As of Sol 2171 (March 3, 2010), the solar array energy production was 278 watt-hours with an atmospheric opacity (tau) of 0.396 and a dust factor of 0.481. Total odometry is 19,399.57 meters (12 miles).

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