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Some Statistics for Spirit & Oppy, As the journey continues on Mars
dilo
post Dec 16 2010, 09:01 AM
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Exceptional mid-month update in order to celebrate arrival to Santa Maria... Absolutely impressive level of average odometry in last 6 months (30.7 m/sol) and, especially, in last 2 weeks (67 m/sol)... easy to forecast a little drop in next days dedicated to crater exploration! rolleyes.gif
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akuo
post Dec 16 2010, 01:55 PM
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Thanks Dilo. How is the daily and weekly odometry compared to the strech from the heat shield to Viking/Voyager craters (around sols 360-460). It would be nice to see if Oppy is actually covering better ground than during those "early" sols.


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dilo
post Dec 16 2010, 03:09 PM
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Good question, akuo!
In the "guiness days" between Heat Shield and Viking-Voyager exploration (about two months) average Odometry was almost 50 m/Sol, with an exceptional week with 136 m/sol (Sol 407-414); this was also the week in which Oppy reached absolute daily record of 220 meters.
However, Oppy never performed so well in a so long continued period like last one. Look at the total Odometry plot below:

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climber
post Dec 16 2010, 03:20 PM
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Hi akuo and Dilo,
I don't have the exact period but close.
I've got from 360 to 438 = 3024m (then only 330m up to Sol 531) so, this give a mean of 38,77 m per sol
Last 103 sols (2346 to 2449) = 3654m, so it is 35,5 m per sol
Mean per sol since landing day is now 10.8m

Edited 1: with today's data of sol 2449 (very slight change).
Also, a kinda "rush" recentely to get to Santa Maria (mean m/sol)
Edited 2:
Nov 2-10 = 19,0
Nov 10-16 = 19,5
Nov 16-22 = 36,8
Nov 22-30 = 33,9
Nov 30-Dec 8 = 70,8
Dec 8-14 = 62,0

Edited 3: Oppy drove the last 6kms (which is what remains to get to Endeavor) in 239 sols...





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MoreInput
post Dec 16 2010, 08:20 PM
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Thanks a lot for the whole picture of the journey, dilo!

As we reached another milestone (literally), I updated the milestone timeline.

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MoreInput
post Dec 16 2010, 10:36 PM
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And here's the combined view: driving and milestones!

At the upper part you see the odometry of opportunity. In the lower part you see a modified timeline with the interesting milestones. It is also marked when the solar conjunctions happend (cyan), and the big sand storm in 2007. Marked in grey is the mars winter.

Interesting would also be the energy production per sol.

Points of interest:
* While inspecting Endurance Opportunity drove not really much.
* The daily average odometry peak until they drove into purgatory dune in 2005. Then the driving was much more carefully...
* Entering and leaving Victoria crater took about one year. But it didn't put really much on the odometry.
* At Erebus there was a problem with the shoulder joint, so Oppy was on hold (End of 2005)
* The solar conjunctions are also times for a stop
* Winter time isn't really much a problem for opportunity
* You can also the the stops for Marquette Island (End 2009) and Conception (Begin 2010)




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brellis
post Dec 16 2010, 10:39 PM
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wow! I guess AUTONAV works!
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dilo
post Jan 5 2011, 12:05 PM
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MoreInput, your "combined view" is great in terms of informations and comprehensibility; if you want, I could periodically send you updated full Odometry and you could integrate milestones... wink.gif
In the meantime, this is the Oppy update, showing an almost flat odometry in last two weeks (as forecasted):
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algorimancer
post Jan 5 2011, 02:24 PM
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QUOTE (dilo @ Dec 16 2010, 09:09 AM) *
...Odometry plot...


Just to have a bit of fun with bad statistical methodology, here's a 1000 Sol projection based upon and extending from the Sol 1660 to Sol 2440 segment of the graph. The better fit is a cubic polynomial ... very promising, if misleading smile.gif

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djellison
post Jan 5 2011, 02:53 PM
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QUOTE (algorimancer @ Jan 5 2011, 06:24 AM) *
very promising, if misleading


You put the word 'very' infront of the wrong word there.
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dilo
post Feb 1 2011, 08:07 AM
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Update, poor odometry but good picture rate at Santa Maria, even during conjunction...
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dilo
post Mar 4 2011, 08:02 PM
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Monthly Update; the reduced energy availability will affect odometry in the imminent journey resume... sad.gif
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ilbasso
post Mar 4 2011, 09:09 PM
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Is the reduced energy because Mars went behind the dark side of the Sun?

(yes folks, I'm kidding...)


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Phil Stooke
post Mar 4 2011, 09:27 PM
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Good one!

Phil


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Guest_Sunspot_*
post Mar 4 2011, 11:58 PM
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nearly a years since last contact. sad.gif
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