Hello everyone !
I would like to know more about the mileage grid on the ground. I have difficulty finding precise data from various unofficial sources.
Here is my list:
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Bonjour a tous !
J'aimerais avoir des précisions sur la grille de kilométrage parcourus au sol. J'ai des difficulter a trouver des données bien précises à différentes sources non officiel.
Voici ma liste :
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1 km Sol 335, 17 juillet
2 km Sol 363, 14 août
3 km Sol 403, 24 sept
4 km Sol 431, 22 oct
5 km Sol 521, 23 janv
6 km Sol 568, 12 mars
7 km Sol 641, 26 mai
8 km Sol 668, 23 juin
9 km Sol 709, 4 août
10 km Sol 957, 16 avril
11 km Sol 1296
12 km Sol 1439
13 km
14 km Sol 1448
15 km
16 km Sol 1669
How about this one : http://www.curiositymsl.com/tracking/drivelog.html
Thank you, but I think the site does not take actual distances into account. It includes the general rolling without descriminating the landslides, the enclosures and others. I am referring to the actual mileage on the distance traveled on the Martian surface.
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Merci, mais je crois que le site ne tient pas compte des distances réel. Il inclut le roullement général sans descriminé les glissements, les enlisements et autres. Je fais référence au kilométrage réel sur les distance parcourus à la surface martienne.
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The data on that web site appears to be matching the telemetry pretty well. If VO (visual odometer) is enabled the odometer does take into account slippage (if that's what you meant by landslide). VO is being used all the time nowadays but at the beginning of the mission it was left off or on auto *VO is automatically turned on by the rover under certain conditions). The odometer reports the overall distance traveled by the center of the vehicle which is obviously different from the odometer for each wheel (a turn-in-place counts as zero meters).
Paolo
Hello Glevesque,
Here is the data that I use for my MSL route map kmz (Google Earth) file. I hope it helps.
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Salut Glevesque,
Voici les donnees que j'utilize dans mon fichier kmz de la route de MSL (Google Earth). Je souhaite qu'ils te seront utiles.
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Fernando
MSL_KML.txt ( 1.75K )
: 804
Km Sol Earth Date Information sources
1 335 16-07-2013 Analyst's Notebook entry for Sol 336
2 365 16-08-2013 Analyst's Notebook entry for Sol 365
3 406 27-09-2013 Analyst's Notebook entry for Sol 404 and 406
4 436 28-10-2013 Analyst's Notebook entry for Sol 438
5 540 11-02-2014 Analyst's Notebook entry for Sol 542
6 574 18-03-2014 Analyst's Notebook entry for Sol 575
7 655 10-06-2014 Analyst's Notebook entry for Sol 655
8 670 24-06-2014 Analyst's Notebook entry for Sol 670
9 735 31-08-2014 Analyst's Notebook entry for Sols 735-751
https://www.nasa.gov/press/2014/september/nasa-s-mars-curiosity-rover-arrives-at-martian-mountain/#.VBRvNWRdVVt
10 957 16-04-2015 Analyst's Notebook entry for this day gives total distance as 10231m,however
NASA/JPL press report below states the 10km mark was passed on this date
https://www.jpl.nasa.gov/news/news.php?feature=4556
11 1094 04-09-2015 Analyst's Notebook entry for Sol 1094
12 1248 09-02-2016 https://astrogeology.usgs.gov/news/astrogeology/sol-1249-twelve-kilometers-and-counting
However Analyst's Notebook entry for sol 1248 mentions "12305 Odometry"
13 1376 19-06-2016 https://mars.nasa.gov/multimedia/images/curiosity-rovers-location-for-sol-1376
14 1448 01-09-2016 https://mars.nasa.gov/multimedia/images/curiosity-rovers-location-for-sol-1448
15 1526 21-11-2016 https://mars.nasa.gov/multimedia/images/curiosity-rovers-location-for-sol-1526
16 1666 13-04-2017 https://mars.nasa.gov/multimedia/images/2017/curiosity-rovers-location-for-sol-1666
17 1754 13-07-2017 https://mars.nasa.gov/msl/mission/mars-rover-curiosity-mission-updates/?mu=sol-1755-getting-ready-to-disappear-behind-the-sun
...................................................................
thank you very much nogal !
There is also a lot of information available in the PLACES database:
https://pds-imaging.jpl.nasa.gov/data/msl/MSLPLC_1XXX/
Unfortunately, while it includes positions, it does not include drive odometry. You can get some of that from Vasavada et al. papers:
http://onlinelibrary.wiley.com/doi/10.1002/2014JE004622/abstract
One more thing I'd like to add: The PLACES database - on which most of Curiosity's route map for my GE file is based - includes for each location entry the (x,y,z) distances to the landing location.
Thus it would seem that computing the 3D distance between two successive locations would give that segment's length, and that adding all of the segments would allow computing the total traveled distance.
Here is a table of the sols in which each km was crossed (up to km 15, the latest covered by PDS release 14) and a comparison with the previously posted table. As can be seen, there are some differences, sometimes large, and I don't know why. I'd be indebted if anyone can provide an explanation, by posting it here or by PM. Cheers
... Sol..... Sol
Sol Computed External
1 335 335
2 369 365
3 406 406
4 437 436
5 546 540
6 589 574
7 657 655
8 672 670
9 743 735
10 956 957
11 1080 1094
12 1196 1248
13 1357 1376
14 1438 1448
15 1514 1526
"our resident Phil Stooke"
Inside every Phil Stooke is a Tim Parker trying to get out (I have TARDIS-like qualities)
I am studiously avoiding this discussion (oops, until now) because it's so difficult to sort out exactly what these distances mean. I don't think we can definitively answer the simple-sounding question 'how far has the rover moved', not to everybody's satisfaction. Any distance flags I put on my maps are only approximations.
Phil
Even if the slippage could be precisely accounted for, how could we settle on a definition of "distance traveled"?
It's like trying to compute the exact length of the coastline of France.
Any path with self-similar irregularities down to an infinitely small scale is not going to have a unique length unless you first specify the radius of measurement.
Ok, maybe a wheeled vehicle has a minimum turning radius, but in three dimensions the terrain will still cause infinitely small bumps that need to be factored in if you want the "exact" distance, and many of these will have occurred in between measurements. It will always be necessary to simplify the true path to a series of segments, and the distance between stopping points seems like the most expedient segment to use for most purposes.
I would also like your help to trace the daily cumulative distances (per Sol) that were greater than one hundred meters. Here is the list that I was able to come out on this subject:
PS: I did not find the distance record assuming the Sol 976 of 262.41 meters (May 2015)
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J'aimerais également votre aide pour retracer les distances cumulatifs journalière (par Sol) qui ont été supérieurs au cent mètres. Voici la liste que j'ai pu resortir a ce sujet :
PS : Je n'ai pas retrouver le supposer record de distance au Sol 976 de 262.41 meters (mai 2015)
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Curiosity Rover's Location (Nasa/JPL)
Analyst's Notebook entry for Sols
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Sol - Dist(m) - Earth Date - Information sources
385 - 128.81 - 06/11/2013 - https://mars.nasa.gov/multimedia/images/?ImageID=5549
419 - 117.84 - 11/10/2013 - https://mars.jpl.nasa.gov/multimedia/images/?ImageID=5649
657 - 112.63 - 12/06/2014 - https://mars.jpl.nasa.gov/multimedia/images/?ImageID=6319
661 - 109.35 - 16/06/2014 - https://mars.jpl.nasa.gov/multimedia/images/?ImageID=6342
662 - 123.88 - 17/06/2014 - https://mars.jpl.nasa.gov/multimedia/images/?ImageID=6344
665 - 121.60 - 20/06/2014 - https://mars.nasa.gov/multimedia/images/?ImageID=6350
668 - 104,85 - 23/06/2014 - https://mars.jpl.nasa.gov/multimedia/images/?ImageID=6366
671 - 113.58 - 26/06/2014 - https://mars.jpl.nasa.gov/multimedia/images/?ImageID=6372
Source : https://an.rsl.wustl.edu/msl/mslbrowser/tab.aspx?t=MP
A big thank you for sharing his information.
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Un grand merci pour le partage de ses informations.
Hello again,
The discussion is this thread prompted me to thoroughly review the km and mile signposts in "The Martian Way" kml file, especially at the light of new (to me) information in the articles by http://onlinelibrary.wiley.com/doi/10.1002/2014JE004622/full and http://onlinelibrary.wiley.com/doi/10.1002/2016JE005200/full. which provide sub-meter accuracy for the total traversed distance for sols 0-494 and 535-634, respectively. The former allows very precise location determination of kms 0 through 4 and miles 1 and 2; the latter extends this to kms 5 and 6 and miles 3 and 4.
Additionally, starting with sol 1282, the description on NASA/JPL Location and Traverse maps ("Where is Curiosity") includes the total traversed distance to an accuracy of 10m. In this way good estimates for kms 13 to 17 and miles 8 to 10 can be made.
Km 10 was abundantly mentioned. Thus I "only" needed to "guesstimate" the locations of kms 7, 8, 9,11, and 12, and miles 5, 6, and 7. This proved to take a lot longer than I antecipated, which explains why I have not made any recent updates to Curiosity's GE path. Phil Stooke's maps have several of the guessed kms, which is good corroboration - thank you Phil. Despite doing my very best, errors may exist. I have after all, "guesstimated" several locations. I would be very thankful for any information that could improve the accuracy of those locations.
In short, here is the revised list of kms and sols:
1 335
2 365
3 404
4 436
5 540
6 587
7 655
8 670
9 743
10 957
11 1098
12 1248
13 1376
14 1448
15 1526
16 1666
17 1754
And here is the complete list, with information sources. To use it, dowload it and drop the ".txt" from its name.
MSL_kms.csv.txt ( 129.33K )
: 653
Fernando
Edit: Something I've learned: in the Analyst's Notebook odometry or total odometry is not equivalent to traversed distance. The former really does exceed the latter.
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