[meteorite-list] Mars Rover Opportunity Update: September 17-23, 2014

[Ron Baalke]

http://mars.nasa.gov/mer/mission/status.html#opportunity

OPPORTUNITY UPDATE:  Opportunity's Heading to a Small Crater Called 'Ulysses' 
- sols 3786-3792, September 17, 2014-September 23, 2014:

Opportunity is on the west rim of Endeavour Crater heading towards "Marathon 
Valley," a putative location for abundant clay minerals.

The rover is headed to a near-term target, a small crater named "Ulysses." 
The rover is moving closer to Ulysses to get a peek inside. On Sol 3787 
(Sept. 18, 2014), Opportunity drove a little over 44 feet (13.5 meters) 
in rocky terrain, requiring the use of Visual Odometry to safely navigate. 
On Sol 3789 (Sept. 20, 2014), the rover moved closer to the rim of Ulysses, 
but the drive stopped after 15 feet (4.6 meters) because Visual Odometry 
was not tracking on the last steps. An evening Alpha Particle X-ray Spectrometer 
measurement of atmospheric argon was performed on Sol 3790 (Sept. 21, 
2014). The rover continued closer to Ulysses on the next sol with a 13-feet 
(4-meter) bump. High slip prevented the rover from completing the turn 
for communication at the end of the drive.

Recently, there were more Flash-related events. Two more "amnesia" events 
occurred on the evenings of Sols 3786 and 3789 (Sept. 17 and Sept. 20, 
2014). And two Flash write errors to Bank 7 occurred on Sols 3791 and 
3792 (Sept. 22 and Sept. 23, 2014). All these events were benign and did 
not impact the rover's operation. The project continues to investigate. 
Otherwise, Opportunity continues in good health.

As of Sol 3792 (Sept. 23, 2014), the solar array energy production was 
639 watt-hours with an atmospheric opacity (Tau) of 0.889 and a solar 
array dust factor of 0.740.

Total odometry is 25.34 (40.77 kilometers).