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Chang'e-4 farside landing mission
Phil Stooke
post Jan 11 2020, 07:21 AM
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My hero!

Phil


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Phil Stooke
post Jan 12 2020, 01:38 AM
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OK, to get started... this is a circular version (with considerable contrast enhancement) of the May 30 panorama. It shows how we can learn things from the images. The tracks show that this location is what I show on the map as the 6th lunar night stop. If Yutu 2 was there on May 30, it probably drove on May 27, 28, 29 and 30 and then stopped for its noon break. In the afternoon it did no driving and stayed there until waking for the next day.

EDIT: No... not quite. Now I have done the June 9 panorama, I see that the position on my map labelled June 9th was incorrect. So now I can see that there was a drive in the afternoon, and I can label the locations properly. I will update the map when I have all these things sorted out, but having the panoramas is very useful. Mapping like this is an iterative process.

Phil

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Phil Stooke
post Jan 12 2020, 07:41 PM
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This is the updated map of panorama numbers. The base includes a correction for the end of lunar day 6. A full map update taking all panorama locations and dates into account will follow soon. Trying to map in real time is always going to be iterative!

Phil

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djellison
post Jan 12 2020, 08:19 PM
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Yeah - the area around Pan 50 - the 'gel' crater - they certainly approach it a few times... https://dougellison.smugmug.com/Change-4-Yutu-2/i-H7Zxsqr/A
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Phil Stooke
post Jan 12 2020, 08:55 PM
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One of Doug's panoramas in circular form.

Phil

July 6:

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Phil Stooke
post Jan 13 2020, 05:51 AM
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This is the June 9th panorama reprojected.

Phil

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Phil Stooke
post Jan 13 2020, 06:21 AM
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And here's a drive diary for the last lunar day. Open in something that will translate it for you.

Phil

https://www.bilibili.com/read/cv4340966


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Phil Stooke
post Jan 13 2020, 10:34 PM
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This is the Oct. 25th panorama made by Doug and reprojected to show the area in a somewhat map-like form (but still full of topographic distortions) (are there DEMs in the data release?).

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And an updated panorama number map. Doug says some numbers are missing. They may be other types of observation rather than panoramas.

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djellison
post Jan 13 2020, 11:26 PM
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I don't see DEMs in the release. I've tried some photogrammetry with the images with very very mixed results

Pan 10
https://sketchfab.com/3d-models/change-4-yu...38c0f4cecab14ab

Pan 18
https://sketchfab.com/3d-models/change-4-yu...a86461b3c3728bd

Pan 22
https://sketchfab.com/3d-models/change-4-yu...578d458f0c84130

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Phil Stooke
post Jan 14 2020, 02:48 AM
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Hi Doug - can you post the original Pan 18? I don't think it's on Smugmug yet.

Phil



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djellison
post Jan 14 2020, 04:45 AM
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https://dougellison.smugmug.com/Change-4-Yutu-2/i-sbJvjxd/A
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Phil Stooke
post Jan 15 2020, 01:07 AM
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Thanks so much. Here's a circular view.

Phil

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Phil Stooke
post Jan 16 2020, 08:04 PM
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Yutu 2 is just about to wake up for lunar day 14. This is a mosaic of two recently released images showing the road ahead towards a prominent crater (top left).

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And a rough reprojection:

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Phil


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Nordren
post Jan 19 2020, 08:14 PM
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Lunar day 14 is underway. Yutu-2 rover awoke at 14:00 UTC January 18 and the lander following at 09:55 Sunday, according to a social media post from CLEP. Two images released.

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djellison
post Today, 01:20 AM
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So - I went thru every pan number there is for the rover, opened the label file for the first image listed and pulled out the start time, lat and long, and the X, Y, Z from the lander.

I've not looked to see if other data sets (the gpr for example) have more site locations than the 34 pans in this list.

Zipped up XLSX attached, as well as a crude X vs Y scatter plot.


Pan Start Time Rover Longitude Rover Latitude Lander X Lander Y Lander Z
1 2019-01-04T04:15:18.011Z 177.599017 -45.44502 -1.759764 -12.692296 -0.834688
2 2019-01-10T21:11:29.451Z 177.598821 -45.444298 -5.91543 9.126358 -0.088721
3 2019-01-12T10:08:36.801Z 177.598632 -45.444101 -9.922689 15.07963 -0.429371
5 2019-01-31T17:25:22.255Z 177.598225 -45.443865 -18.552117 22.211425 -0.146258
6 2019-02-01T14:23:58.141Z 177.597694 -45.443521 -29.810781 32.606861 -0.249397
7 2019-02-08T20:45:47.117Z 177.59707 -45.443625 -43.041079 29.463715 -0.726265
9 2019-02-09T14:48:29.173Z 177.596713 -45.444048 -50.610007 16.680557 -0.230944
10 2019-02-11T02:59:33.023Z 177.596055 -45.443988 -64.561216 18.49327 -0.386951
11 2019-02-28T08:15:19.262Z 177.596055 -45.443988 -64.561216 18.49327 -0.386956
18 2019-03-03T07:24:14.968Z 177.595598 -45.444084 -74.250569 15.591778 -0.483145
19 2019-03-10T02:17:34.646Z 177.595597 -45.444073 -74.27177 15.924191 -0.830961
20 2019-03-10T15:11:37.602Z 177.595189 -45.444017 -82.922409 17.616099 -0.72672
21 2019-03-11T19:21:06.350Z 177.594663 -45.443716 -94.075368 26.711671 -0.401053
22 2019-03-12T07:54:14.510Z 177.594439 -45.443621 -98.824882 29.582277 -0.504348
30 2019-04-01T07:21:17.218Z 177.594177 -45.443472 -104.380201 34.084686 -0.722461
32 2019-04-11T02:06:15.518Z 177.593814 -45.443491 -112.076686 33.51002 -0.819108
33 2019-04-29T14:37:38.249Z 177.593636 -45.443368 -115.85098 37.226793 -1.013572
34 2019-05-01T03:04:12.505Z 177.593599 -45.443429 -116.63537 35.383341 -0.715814
35 2019-05-08T02:32:58.229Z 177.593603 -45.443427 -116.55055 35.443782 -0.925472
38 2019-05-10T10:01:15.233Z 177.593479 -45.443385 -119.179746 36.712826 -1.08647
42 2019-05-30T12:42:26.488Z 177.593088 -45.443538 -127.469635 32.088611 -0.784407
43 2019-06-09T02:41:56.276Z 177.592582 -45.443543 -138.198076 31.936669 -1.151678
44 2019-06-28T04:13:46.863Z 177.592056 -45.443531 -149.350636 32.298365 -1.162575
47 2019-07-06T11:30:53.779Z 177.591667 -45.443557 -157.598359 31.511912 -1.044718
48 2019-07-08T04:33:58.347Z 177.591486 -45.443507 -161.436147 33.022538 -1.172553
50 2019-07-29T01:18:59.329Z 177.590606 -45.443137 -180.095548 44.20197 -1.333302
53 2019-08-06T11:34:52.535Z 177.59065 -45.443311 -179.162096 38.943837 -1.152623
60 2019-08-27T09:42:41.591Z 177.590575 -45.443274 -180.75239 40.061796 -1.34759
67 2019-09-05T07:18:18.365Z 177.590437 -45.44312 -183.678869 44.715327 -1.204995
76 2019-09-25T03:18:38.935Z 177.590256 -45.443022 -187.516844 47.676434 -1.551671
92 2019-10-25T05:31:54.960Z 177.589671 -45.442755 -199.921397 55.7437 -1.410534
94 2019-11-03T01:21:53.512Z 177.589142 -45.442875 -211.137216 52.115973 -1.607826
95 2019-11-23T09:18:29.232Z 177.588667 -45.442573 -221.209778 61.241073 -1.127004
97 2019-12-02T05:21:08.786Z 177.588335 -45.442877 -228.247941 52.05335 -0.883405
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