MASCOT landing on Ryugu, 3 October 2018 |
MASCOT landing on Ryugu, 3 October 2018 |
Guest_mcmcmc_* |
Oct 3 2018, 08:48 AM
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#16
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Guests |
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Oct 3 2018, 08:48 AM
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#17
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Member Group: Members Posts: 819 Joined: 3-June 04 From: Brittany, France Member No.: 79 |
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Guest_mcmcmc_* |
Oct 3 2018, 09:02 AM
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#18
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Guests |
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Oct 3 2018, 11:33 AM
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#19
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Senior Member Group: Members Posts: 2346 Joined: 7-December 12 Member No.: 6780 |
Press conference is continuing on YouTube.
There will be two more updates in 2 resp. 4 hours from now. |
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Oct 3 2018, 11:36 AM
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#20
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Senior Member Group: Members Posts: 2346 Joined: 7-December 12 Member No.: 6780 |
Mascot is fine after initial issues.
Performing night sequences, all instruments are working. |
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Oct 3 2018, 01:46 PM
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#21
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Senior Member Group: Members Posts: 2346 Joined: 7-December 12 Member No.: 6780 |
"short delay - stay tuned"
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Oct 3 2018, 01:47 PM
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#22
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Junior Member Group: Members Posts: 22 Joined: 15-November 14 Member No.: 7320 |
https://twitter.com/MASCOT2018/status/1047456139024261121
The team seems very confident in the hopping and uprighting mechanism. The found the first landung spot too dark and unstable, so commanded a first hop at the beginning of the first sol, to begin the science sequence at another location. Next press conference has a delay but should beginn soon. |
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Oct 3 2018, 01:57 PM
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#23
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Senior Member Group: Members Posts: 2346 Joined: 7-December 12 Member No.: 6780 |
live again...
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Oct 3 2018, 02:01 PM
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#24
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Senior Member Group: Members Posts: 2346 Joined: 7-December 12 Member No.: 6780 |
They had to make an important decision. Therefore the delay.
Spectrometer needs to be in contact with the surface. Radiometer will tell about thermal conductivity. Important for deflection of asteroids: What's the arrangement of grains? Magnetometer: Extremely sensitive, seeing separation, and operation of instruments. Magnetic field data to be cleaned from those instrument operation fields. They're going to be tired and will drink a beer this evening. Tomorrow, and until Friday, they'll take a look at the data. A first draft of evaluation will take a few more days of computation. But complete evaluaton will take years. |
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Oct 3 2018, 02:19 PM
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#25
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Junior Member Group: Members Posts: 22 Joined: 15-November 14 Member No.: 7320 |
Also interesting: Magentometer team decided to switch off the instrument to safe power, as the have enough data. Let's hope the second sol goes well. The estimate of 16 h battery time probably does not allow for surviving a third night.
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Guest_mcmcmc_* |
Oct 3 2018, 03:04 PM
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#26
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Guests |
I read that expected battery life is just 16 hours and it's not rechargeable (no solar panels), and delivery occurred at around 02:17 GMT. So MASCOT mission should come to its end at around 18:17 GMT, 3 hours from now. |
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Oct 3 2018, 03:10 PM
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#27
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Junior Member Group: Members Posts: 22 Joined: 15-November 14 Member No.: 7320 |
Indeed. There will be another press conference in 25 min, maybe they tell us more about the expected life time of the battery. I think it is targeted to last at least two sols in the worst case. Also in the grphic from JAXA, end of mission (EOM) is during the third night. Let's hope for the best, and that the DLR team as uploaded a energy saving program for the third night, so MASCOT may have the chance to upload the data in the next morning, if it survives.
Otherwise the last hours in the night without contact are wasted. The technical reason is the mass constraint. With just 10 kg, solar panels and rechargables are just too heavy. Rechargables and do not have the energy density compared to non-rechargable batteries. Also, the location MASCOT finally settles was unknown, so no sun light guaranteed. And as we have seen with Philae, if the additional power from solar is required for the science goal, this just adds to the risk. |
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Oct 3 2018, 07:18 PM
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#28
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Member Group: Members Posts: 819 Joined: 3-June 04 From: Brittany, France Member No.: 79 |
I added a scale to the first picture we have from MASCOT, and Buzz Aldrin to better figure out the scale (like Mystery Man of fredk )
The altitude at which this picture was taken in 25 m and not 40 m as it was previously stated. -------------------- |
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Oct 3 2018, 08:49 PM
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#29
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Junior Member Group: Members Posts: 22 Joined: 15-November 14 Member No.: 7320 |
Very nice, those are some big bolders. And again, shadows in the "right" direction makes it so much easier to grasp for my brain.
https://www.youtube.com/watch?v=wSoEapbchGA JAXA press conference for MASCOT with english translation. |
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Oct 3 2018, 10:52 PM
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#30
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Merciless Robot Group: Admin Posts: 8785 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
I added a scale to the first picture we have from MASCOT, and Buzz Aldrin to better figure out the scale (like Mystery Man of fredk ) The official unit of all future photographic scale references on Ryugu is now the "Aldrin". -------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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