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Chang'e 5 sample return mission
Phil Stooke
post Oct 13 2015, 03:49 PM
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Tweet from IAC:

Peter B. de Selding ‏@pbdes · Oct 12
China space admin chief Xu: Lunar sample return mission in 2017, lander on far side in 2018, lander/rover combination in 2020.#IAC2015

Phil

(de Selding is with spacenews.com)


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tolis
post May 26 2016, 01:51 PM
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The web site of this conference links to a nice collection of abstracts ( see link at bottom left) including several that specifically focus on the Chang'e series of missions.
I note in particular the one by one by Zhao et al (p78) where it is stated that "Mons Rümker is .. a priority landing site for Chang’E-5."
I would take the cautious view that this site has been shortlisted and is presently in the top x, rather than being first on the list.
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Phil Stooke
post May 26 2016, 08:14 PM
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This is the same information presented at LPSC. Another bit of news is here:

http://www.chinaspaceflight.com/satellite/...CE5-launch.html

I used Google to translate it - it mentions landing near Sinus Iridum, but is not clear what 'near' means. Elsewhere we have been told 1000 km from Sinus Iridum.

That link includes some images with chinese text - any advice on their content would be appreciated.

Phil


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Paolo
post May 27 2016, 01:10 PM
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QUOTE (Phil Stooke @ May 26 2016, 09:14 PM) *
That link includes some images with chinese text - any advice on their content would be appreciated.


that's two pages from this paper: Technology Roadmap for Chang'E Program

link to PDF
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Phil Stooke
post Jan 1 2017, 10:21 PM
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https://www.chinaspaceflight.com/satellite/.../CE-5/CE-5.html

Some new images of the CE5 return capsule being prepared. I am still waiting for news on the landing site location... maybe that will come at LPSC in March.

Phil


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Phil Stooke
post Mar 2 2017, 12:44 AM
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Update on Chang'E 5 landing site selection. Not at LPSC, but at the European Geoscience meeting in April:

http://meetingorganizer.copernicus.org/EGU...GU2017-2026.pdf


Summarizing, the pre-selected landing region for CE-5 extends from 41 degrees to 45 degrees N and 49 degrees to 69 W, in northern Oceanus Procellarum west of Montes Jura and north of Mons Rümker. After an analysis of the topography and geologic units, seven sites were shortlisted, in the vicinity of 43 N, 55 W. This is in an area of younger basalts, probably younger than anything sampled before. A significant bit of science.

Here's a map of the area:

Attached Image


Phil


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Phil Stooke
post Mar 2 2017, 12:59 AM
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And a closer view of the target area - it's the smooth patch in the middle of this scene.

Phil

Attached Image


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Holder of the Tw...
post Mar 2 2017, 02:36 PM
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QUOTE (Phil Stooke @ Mar 1 2017, 06:44 PM) *
This is in an area of younger basalts, probably younger than anything sampled before.


I was hoping for that.
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Phil Stooke
post Mar 2 2017, 06:50 PM
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An updated map of the landing area.

Phil

Attached Image


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Phil Stooke
post Mar 6 2017, 04:25 AM
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And finally, to show that the precursor mission Chang'E 5 T1 actually did image the landing area, here is the location of one of its images:

Attached Image


(west of the preferred landing area, NW of Mons Rumker, at 43 N, 61 W or 299 E)

Phil


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Phil Stooke
post Mar 15 2017, 02:20 PM
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I have located the second image now, on the western edge of the first one at 42.763 N, 61.120 W. I will post a graphic when I have time.

Phil


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Phil Stooke
post Mar 15 2017, 03:46 PM
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CE5-T1 second image located.

Phil

Attached Image


Attached Image

Attached thumbnail(s)
Attached Image
 


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Phil Stooke
post Jun 22 2017, 05:13 AM
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I have learned some new things about the CE5 landing site. The EGU abstract I linked to higher up on this page defined the large landing area and described a preferred area where seven sites had been 'shortlisted'. Shortlisted was my word, they only referred to them as possible sites in the abstract. The lead author of that abstract has now advised me that the seven sites are just suggestions at this stage, and they are spread over a larger area than my map suggests, but all in the eastern half of the main landing area (i.e all in the younger basalt unit). These sites will be or have been transmitted to the mission management and a final selection will be announced nearer the launch date. I did not see the presentation at EGU and nobody who did seems to have filled in any more details in tweets etc.


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Phil Stooke
post Jun 23 2017, 12:52 AM
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More on those sites later. Meanwhile, here's something I am putting together for a blog post. Clementine color ratio superimposed on the map I made earlier. The gray strip is missing Clementine data. A few small data gaps elsewhere have been cosmetically patched (since this product is not for scientific analysis). The landing site will be in the blue unit.

Phil

Attached Image


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Phil Stooke
post Jul 2 2017, 04:45 PM
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Sad news. A second launch of the large new rocket which is needed for Chang'E 5 has just failed. It seems inevitable that another test - or even two - will be needed before CE5 can be launched, pushing it back well into next year.

Phil


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