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Some Statistics for Spirit & Oppy, As the journey continues on Mars
dilo
post Nov 25 2008, 10:07 PM
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Time to update Oppy Odometry:
Attached Image

This trend is very encouraging, with weekly average steadly above 25 meters.
wheel.gif wheel.gif wheel.gif biggrin.gif


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djellison
post Nov 25 2008, 10:22 PM
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What would their Martian third birthday's be?
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climber
post Nov 25 2008, 10:45 PM
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On dec 2nd, assuming total mission costs at 900M*, cost per second will be exactly = 3$
Just about that time, total pictures will be very close to 225.000 (source JPL MER web site), giving a cost per picture of 4000$ (again at 900M*)
Note that, removing sundial pics out of the count will increase considerably the cost per "regular" pictures biggrin.gif

*: that was your estimation Doug, one year ago, so it's probably "a bit" more. So, if not on dec 2nd, those stats will be moved a few days, roughly... up to their birthday.


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djellison
post Nov 25 2008, 10:52 PM
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My $900m is, I think, slightly high. Scott mentioned something like $890 or there abouts in his awesome Mars 3.0 talk at Gnomedex
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jamescanvin
post Nov 26 2008, 09:08 AM
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QUOTE (djellison @ Nov 25 2008, 10:22 PM) *
What would their Martian third birthday's be?


Plugging Spirit's landing day into the Exploratorium birthday tool gives 24/08/2009 as her third birthday on Mars.


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briv1016
post Dec 11 2008, 06:40 AM
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Does anyone have an exact date for when the MER combined mission duration becomes greater then the Viking combined mission duration? My rough calculations put it at Dec 29; but maybe some with more precise numbers can get a more exact date.
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RoverDriver
post Dec 11 2008, 08:12 PM
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QUOTE (briv1016 @ Dec 10 2008, 10:40 PM) *
Does anyone have an exact date for when the MER combined mission duration becomes greater then the Viking combined mission duration? My rough calculations put it at Dec 29; but maybe some with more precise numbers can get a more exact date.



From wikipedia I have:

Vk1 lasted 2245 Sols
Vk2 lasted 1281 Sols

That is a total of 3526 Sols. On Sun Dec 28, 2008 MER-A will be at Sol 1773 and MER-B will be on Sol 1753.

Paolo


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briv1016
post Dec 30 2008, 08:59 PM
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QUOTE (RoverDriver @ Dec 11 2008, 04:12 PM) *
From wikipedia I have:

Vk1 lasted 2245 Sols
Vk2 lasted 1281 Sols

That is a total of 3526 Sols. On Sun Dec 28, 2008 MER-A will be at Sol 1773 and MER-B will be on Sol 1753.

Paolo



A bit of a belated announcement but Spirit and Opportunity have not surpassed Viking 1 and 2 in combined mission duration. biggrin.gif
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climber
post Jan 27 2009, 10:47 PM
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Reading Scott Maxwell "deary", I realise that he was assuming a cost of 4M$ a day. He didn't know it was 250.000$ a day actualy.
I hope to update this amount in the future and be as wrong as Scott was rolleyes.gif


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climber
post Feb 11 2009, 05:13 PM
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QUOTE (RoverDriver @ Dec 11 2008, 09:12 PM) *
Vk1 lasted 2245 Sols
Vk2 lasted 1281 Sols
That is a total of 3526 Sols. On Sun Dec 28, 2008 MER-A will be at Sol 1773 and MER-B will be on Sol 1753.
Paolo

Please correct me if I'm wrong:
Sojourner lasted 92 Sols (?)
Phoenix lasted 151 Sols (?)
Adding this to the Vikings = 3769 Sols
Spirit + Oppy will, hopefully, surpass ALL other landers added sols on May 3rd of this year... and individually by late August 2014 biggrin.gif wink.gif


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RoverDriver
post Feb 11 2009, 08:16 PM
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QUOTE (climber @ Feb 11 2009, 09:13 AM) *
Please correct me if I'm wrong:
Sojourner lasted 92 Sols (?)
Phoenix lasted 151 Sols (?)
Adding this to the Vikings = 3769 Sols
Spirit + Oppy will, hopefully, surpass ALL other landers added sols on May 3rd of this year... and individually by late August 2014 biggrin.gif wink.gif



Hopefully my math is correct. Assuming both rovers will survive until May MER will surpass the combined sols of all landers/rovers (except MER) on May 2, 2009. Assuming only MERB survives next winter, MERB sol 2245 is May 18 2010.

Paolo


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lyford
post Feb 11 2009, 08:45 PM
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QUOTE (RoverDriver @ Feb 11 2009, 12:16 PM) *
MER will surpass the combined sols of all landers/rovers (except MER) on May 2, 2009.

Surpassing all missions including MER would really be an accomplishment! smile.gif


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climber
post Mar 12 2009, 01:56 AM
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Checking the rovers mileage, I can tell that Oppy is ~250m short of having roved twice as much as Spirit.
Another 3-4 drive.


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Deimos
post Mar 12 2009, 03:09 AM
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QUOTE
Please correct me if I'm wrong:
Vk1 lasted 2245 Sols
Vk2 lasted 1281 Sols
Sojourner lasted 92 Sols (?)
Phoenix lasted 151 Sols (?)


Wikipedia knows all. But ...

VL1 was successfully commanded (to do the wrong thing) on sol 2252. It landed on sol 0, so that's 2253 sols of operations. The place that messed up the sols also messed up the Earth date (11/19, 1982, not 11/13). VL2 lasted 1316.1 days, or 1280.9 sols, so I'd buy 1281 (even though it was probably 1 more, with the 0.9 divided between partial first and last sols). [JPL Pub 82-107]

Pathfinder was under ground command for 83 sols (1-83), and experienced the undervoltage trying to wake up for sol 84. Some level of communication followed, but ground command was not reasserted and the science mission had ended.

Umm, Sojourner lasted 83 sols, too, and was lost when its communications subsystem (ie, MPF) failed. Speculation about what happened on/after sol 92 is just speculation.

Phoenix successfully finished sols 0 through 151 inclusive: 152 sols. (Again, signals without command authority followed.)

So, 3769 combined sols without Sojourner, 3852 with. So with 2 MERs, I get 2009 June 14 around 1900 UTC for a DTE or nominal beep from Opportunity or about 5 hours later for a UHF pass (to exceed all other landers/rovers). Actually, I get May 3 without Sojourner, with other errors canceling.

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climber
post Apr 2 2009, 07:58 PM
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From TPS monthly report:"“We have some commands that have minimum and maximum time ranges in them and the maximum range was January 1, 2010,” she informed. “Obviously, we're coming up on that, so R9.3 extends the maximum range, to noon on January 1, 2020. If we are still going after that,we'll need to do another software patch." The new, R9.3 software has been working “just fine” on both rovers, she added."

smile.gif This will be Sol 5679 for Spirit rolleyes.gif


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