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MASCOT landing on Ryugu, 3 October 2018
Hungry4info
post Oct 2 2018, 04:07 AM
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The Japanese Hayabusa 2 twitter account reports that the spacecraft has begun descending toward Ryugu in preparation to deploy the MASCOT lander. Nothing on the English twitter as of the time of this post.
https://twitter.com/haya2_jaxa/status/1046965970466746369


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yoichi
post Oct 2 2018, 06:00 AM
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QUOTE (Hungry4info @ Oct 2 2018, 01:07 PM) *
The Japanese Hayabusa 2 twitter account reports that the spacecraft has begun descending toward Ryugu in preparation to deploy the MASCOT lander. Nothing on the English twitter as of the time of this post.
https://twitter.com/haya2_jaxa/status/1046965970466746369


English twitter account of HAYABUSA 2.
https://twitter.com/haya2e_jaxa

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xflare
post Oct 2 2018, 06:12 AM
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And the realtime images are back http://www.hayabusa2.jaxa.jp/en/galleries/onc/nav20181002/
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mcmcmc
post Oct 2 2018, 12:02 PM
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Follow #Hayabusa2 approach to #Ryugu for #MASCOT delivery in realtime!
https://programmi.000webhostapp.com/hayabus.../simulator.html

Altitude logs:
http://win98.altervista.org/hayabusa2/simu...r/hayabusa2.txt
https://programmi.000webhostapp.com/hayabus...r/ONC_A-log.txt
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mcmcmc
post Oct 2 2018, 03:39 PM
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QUOTE (mcmcmc @ Oct 2 2018, 12:02 PM) *


It appears from the simulator that from 1500 meters on, MINERVA rovers will start to be visible as 1 pixel bright objects in ONC-T. But we'll have to wait down to 400 meters to see them in ONC-W.
ONC-T resolution is 10 times ONC-W, so 1 pixel in ONC-W is 10 pixel in ONC-T.
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nprev
post Oct 3 2018, 12:19 AM
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Spaceflight Now providing live coverage of MASCOT's landing here.


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Hungry4info
post Oct 3 2018, 01:39 AM
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The last three frames show a persistent very bright dot on the surface. Possible MINERVA-II1 rover or protective drum?

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Phil Stooke
post Oct 3 2018, 02:22 AM
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Sorry, no - the Minerva area is on the other side of Ryugu. The white spot might be added to the images to indicate the descent target point (I'm only guessing) or it could be a naturally reflective object (there are several of them in earlier images). When somebody posted about the sizes of Minerva hardware in pixels, I think they were really only talking about image resolution, not whether the items would be visible, because they are not near the Masot landing area. For one thing, Mascot is targeted south of the equatorial ridge, Minerva was targeted north of it.

Phil


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neo56
post Oct 3 2018, 03:04 AM
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Identification of some rocks on photos taken by Hayabusa2 on 2018/10/03 at 00h41 and 01h12 UTC with estimated position of Hayabusa2 shadow

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nprev
post Oct 3 2018, 03:15 AM
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Separation confirmed per Spaceflight Now!


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MahFL
post Oct 3 2018, 03:25 AM
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QUOTE (nprev @ Oct 3 2018, 04:15 AM) *
Separation confirmed per Spaceflight Now!


Tweet confirms it.
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neo56
post Oct 3 2018, 04:15 AM
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Identification of rocks on the picture taken at 1h46 UTC with shadow of Hayabusa 2 as a red cross. The shadow is probably shifted out of the map on the right since the map is missing a vertical band of latitude on 340° and 360°.

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mcmcmc
post Oct 3 2018, 07:48 AM
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My recording of the delivery operations based on JAXA data (altitude in meters):

CODE
Alt    Generated at (GMT)     Received At (GMT))
101    2018-10-03 01:47:38    2018-10-03 02:05:47
47    2018-10-03 01:58:18    2018-10-03 02:16:27 - Mimimum altitude for 4 minutes
134    2018-10-03 02:02:02    2018-10-03 02:20:10 - Hayabusa 2 rises again.


Full recording of descent:
https://programmi.000webhostapp.com/hayabus...r/ONC_A-log.txt

There are multiple lines for same data, but if you set up a "sparse data" chart in Excel, multiple lines will result is same point be drawn at same coordinate, so you'll just see one point.

Press conference video (no links to press release yet):
https://www.youtube.com/watch?v=O3WNAg5Zfvs

It looks like national broadcasting company NHK created a simulated realtime video based on JAXA data during descent, but it was live, and I can't find the recording now:
http://www.nhk.or.jp/special/space/#/english
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Adam Hurcewicz
post Oct 3 2018, 07:58 AM
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Now starts video brief in DLR Youtube channel

https://m.youtube.com/watch?v=axqedwOW-jo


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neo56
post Oct 3 2018, 08:43 AM
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First image of MASCOT released, showing the landing site from an altitude of 40m:

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