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Unmanned Spaceflight.com > Mars & Missions > MER > Tech, General and Imagery
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climber
Some statistics as on Dec 31st 2006
Total Pictures : 170.026
Total Sols : 2110 (11.7 times more than scheduled)
Pics/Sol/Rover : 81
Total distance : 16.684 meters (13.9 times more than scheduled)
meter/Sol/Rover : 7.9
Cost/sol (Assuming 800 millions USD) : 379.147 USD
Post/UMSF’ers/Sol/Rover : biggrin.gif
dvandorn
Interesting... the MERs are about 200 sols from individually equaling the time the Viking 2 lander remained operational, and the total number of sols for both rovers is about 200 sols short of the time the Viking 1 lander was operational.

In about 700 sols or so, if the rovers last that long, they will have equaled the total operational time of both Viking landers.

Pretty durned impressive for solar-powered wheeled vehicles... smile.gif

-the other Doug
djellison
After all the extensions - it's more like $900m I think.

Doug
climber
QUOTE (djellison @ Jan 4 2007, 09:40 AM) *
After all the extensions - it's more like $900m I think.

Doug

OK Doug! So, assuming $900m, on March 15th, the price per sol will be exactly $400.000 as total sol will get to 2250.
Here are other stats about how long it took to take 25k pictures from the begining of the mission. I miss the date of the first 25k's and assumed it was linear. If somebody know the date, I'll appreciate.
Also number of pictures per sol were we can see summer-winter variations.
It's an excel file :

Click to view attachment
dilo
Thanks for the update on image statistics, Climber (about Excel file, pls could you better explain the meaning of the plots? what do we see on horizontal axis?).
Now is time to update also my odometry statistics (same scale):
Click to view attachment
Click to view attachment
climber
Getting close to yet more milestones!

If my excel file is working as it should work, I calculated that, tomorrow, june 16th we'll have accumulated 2500 Earth days on Mars while 2500 Sols will be on July 20th which could be more or less when Spirit will have shot 100.000 pictures.
On june 18th, the difference of minutes between Earth and Mars since Spirit landing will be 50.000 (nearly 35 days).
More?
OK : since end of May, the total cumulated distance is over 18 kms, i.e. 30 times what has been scheduled.
djellison
Not that far from their second Martian Birthday either.

Doug
climber
Yep, not that far!
September 29th for Spirit and October 9th for Oppy

Regarding the difference between sols and days :we have a 10 Million $ positive difference if we calculate the cost (per sol or day) in Earth days... which seams fair to me since, if we use "external references" it could be VERY expensive to land on Venus and very cheap on Jupiter! biggrin.gif
stevesliva
If only we could get humans to Mars for only $400,000 per day! What a bargain, especially in light of a weeklong trip to LEO costing the tourists $20,000,000.
dilo
Spirit just reached Sol1400, which is the limit for my last odometry plot, so enjoy this last update with old scale...
Click to view attachment Click to view attachment
I guess Spirit figure will not change very much in the last months sad.gif . Hope about Oppy restart, which is full of energy!

Another update for the number of pictures sent back from both rovers, the average was exactly 100 pics/day in the last 9 months (higher than previous year):
Click to view attachment
Tom Tamlyn
QUOTE (climber @ Mar 11 2007, 02:36 PM) *
OK Doug! So, assuming $900m, on March 15th, the price per sol will be exactly $400.000 as total sol will get to 2250.

"[T]he number that most haunted me and Pete ... was the one you got if you took the cost of the mission and divided it by the number of sols we expected to operate on the surface. It came to about $4 million a sol. ... Whatever we built, and whatever we managed to do with it, the result was going to have to be worth at least that much."

Steve Squyres, Roving Mars, p. 103.

TTT
ElkGroveDan
In truth the operating costs have climbed as well. As I recall the $900 million was as of launch time including normal mission support. To get a true figure we need to add up the costs of all the mission extensions and also the DSN time, if that is not part of those extended mission costs.
djellison
$850m was that figure - I just added the $50m as an estimate of the extensions to make $900m

Doug
ElkGroveDan
Well however we slice it, they've been a great bargain. smile.gif
PhilCo126
Talking about MER statistics, anyone know where to find a high resolution version of this MER 1000 sols logo?
climber
Some statistics as on jan 31st 2008
Total Pictures : 207.000
Total Sols : 2880 (16 times more than scheduled)
Pics/Sol/Rover : 72
Total distance : 19200 m (~12 Miles) (16 times more than scheduled)
meter/Sol/Rover : 6.6
Cost/sol (Assuming 900 millions USD) : 315.000 USD

Oppy's now over 100.000 pictures
Just think of this : 72 pictures/Sol/Rover represent 2 old roll films per sol/rover
I can't imagine the size of the container (not talking about processing) the rovers would have to have carryied if Digital camera would'nt exit yet ! pancam.gif
dilo
Another update for our poor old friends on Mars...
Click to view attachment Click to view attachment Click to view attachment
I added an inset odometry plot in order to show the tiny progress in last year!
About pictures, due to energy problems the contribution from Spirit is very small (only 18 pics/sol in last 2 months!).
climber
Thanks Dilo. I like the abrv months in Italian smile.gif
Let see what happen this month with Euro 2008 (BTW my father was born in Piacenza anyway)
dilo
Merci, climber... are you referring to UEFA Championship??? If so, I'm not very expert of soccer, sorry!
dilo
No major odometry changes, for the moments... so I report only updated pics plot:
Click to view attachment
Incidentally, the cumulative pic quote resemble very much to a parabola, stalling one year from now... let's hope that Spirit awakening and, especially, new Oppy journey to EC will change this trend! rolleyes.gif
climber
Here is the updated .xls file I use to follow Rovers progress.
I've got some reliable infos regarding restricted sols so, I added a column for Oppy to show where they'll be. Please don't take this for granted since it depends on when the downlinks happens and it'll have to be ajusted as we go. Anyway, it should work at least for the coming month or so.

Click to view attachment

Enjoy
dilo
Thanks Climber, interesting file.
I would like to integrate these data with my datasheet.
In the meantime, this is my updated odometry for Opportunity wheel.gif wheel.gif wheel.gif... I hope to see a strong increase of such statistics in next week! rolleyes.gif
Click to view attachment
climber
Oppy get full lead now:

+ Oppy overtook Spirit for total distance on March 19 th 2006 : 6836m vs 6807m
+ Oppy overtook Spirit for total number of pictures on October 8 th 2008 : 110864 vs 110840


Edited: for a 900M$ basis, cost per second will drop down 3$ on december 2nd.
I guess we're actually over 900M$. Doug, any better estimate for, say, 31 december 2008?
alan
Conjunction is coming up on December 6. How long will the communications be disrupted around this date.
climber
Last one last 2 weeks total but I'll say it depends on the actual geometry, i.e. how close to the sun Mars will be seen from the Earth. Anyway, I don't expect more than 2 weeks really.
PhilCo126
Longest single-sol drive distances:

Opportunity:
Sol 410 = 220 meters (722 feet)
Sol 362 = 157 meters (512 feet)
Sol 1663 = 153 meters (500 feet)

Spirit:
Sol 125 = 124 meters (409 feet)


wheel.gif wheel.gif wheel.gif
djellison
There are several drives between your first and second place distances there.
dilo
QUOTE (djellison @ Oct 29 2008, 07:31 PM) *
There are several drives between your first and second place distances there.

In chronological order (only above 100m):
Sol daily odometry
70 100
82 141
362 157
383 177
384 104
385 109
408 190
410 220
412 183
413 175
414 183
423 109
433 151
1663 153
1666 129
Happy to see again such big distances! smile.gif
centsworth_II
QUOTE (dilo @ Oct 29 2008, 03:45 PM) *
1666 129
Happy to see again such big distances! smile.gif

Aren't there five 100m plus drives since sol 1666?
PhilCo126
Opportunity:

Sol 410 = 220 meters
Sol 1690 = 216 meters

wheel.gif wheel.gif wheel.gif
dilo
Time to update Oppy Odometry:
Click to view attachment
This trend is very encouraging, with weekly average steadly above 25 meters.
wheel.gif wheel.gif wheel.gif biggrin.gif
djellison
What would their Martian third birthday's be?
climber
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.
djellison
My $900m is, I think, slightly high. Scott mentioned something like $890 or there abouts in his awesome Mars 3.0 talk at Gnomedex
jamescanvin
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.
briv1016
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.
RoverDriver
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
briv1016
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
climber
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
climber
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
RoverDriver
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
lyford
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
climber
Checking the rovers mileage, I can tell that Oppy is ~250m short of having roved twice as much as Spirit.
Another 3-4 drive.
Deimos
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.

climber
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
ElkGroveDan
QUOTE (Deimos @ Mar 11 2009, 08:09 PM) *
Wikipedia knows all.

Not when Ted Stryk has been around.
dilo
QUOTE (climber @ Apr 2 2009, 07:58 PM) *
"...on January 1, 2020. If we are still going after that,we'll need to do another software patch."

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

Or about 50 Km odometry for Opportunity (extrapolating first 5 years average)! rolleyes.gif
dilo
Time for a general update!
Click to view attachmentClick to view attachment
EDIT: someone highlighted wrong axis in the first plot, now I corrected title and added second axis for daily odometry.
Burmese
Oh, go ahead and connect the dots on that second one...want to better visualize that power spike by Spirit!
climber
June 24th 2009 doesn't seams to be a special day for Spirit. It is indeed.
It'll be Sol 1946...which will also be (Earth) Day 2000 since landing.
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