Philae landing on the nucleus of Comet 67P C-G |
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Philae landing on the nucleus of Comet 67P C-G |
 Nov 12 2014, 07:00 PM
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#226
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Member  Group: Members Posts: 121 Joined: 26-June 04 From: Austria Member No.: 89  |
Machi, nice work !
where you did find the new ROLIS image ?..it seems much nearer than the first published before... |
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Nov 12 2014, 07:12 PM
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#227
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 Member Group: Members Posts: 444 Joined: 1-July 05 From: New York City Member No.: 424 |
Briefing started. "Don't worry, it's the right comet."
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Nov 12 2014, 07:12 PM
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#228
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 Member Group: Members Posts: 370 Joined: 12-September 05 From: France Member No.: 495 |
https://twitter.com/CiteEspace/status/532609197092139008
Saying that Philae is stable and batteries are charging. |
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Nov 12 2014, 07:13 PM
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#229
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 Member Group: Members Posts: 796 Joined: 27-February 08 From: Heart of Europe Member No.: 4057 |
QUOTE (Roby72 @ Nov 12 2014, 08:00 PM)  Machi, nice work ! where you did find the new ROLIS image ?..it seems much nearer than the first published before... It's from Emily Lakdawalla's twitter. -------------------- |
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Nov 12 2014, 07:14 PM
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#230
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 Senior Member Group: Members Posts: 2173 Joined: 28-December 04 From: Florida, USA Member No.: 132 |
My take on locating the post landing image.
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Nov 12 2014, 07:16 PM
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#231
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 Senior Member Group: Members Posts: 2082 Joined: 13-February 10 From: Ontario Member No.: 5221 |
Well, no cloud of dust hanging all over; let's be thankful for small favours....
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Nov 12 2014, 07:18 PM
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#232
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Member Group: Members Posts: 444 Joined: 1-July 05 From: New York City Member No.: 424 |
Speculating that Philae landed, bounced & turned, and then landed again.
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Nov 12 2014, 07:20 PM
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#233
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Member Group: Members Posts: 201 Joined: 16-December 13 Member No.: 7067 |
So CIVA pan may have been from altitude!
All's well that ends well. |
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Nov 12 2014, 07:20 PM
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#234
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Junior Member Group: Members Posts: 78 Joined: 20-September 14 Member No.: 7261 |
It would be awesome if you could later see marks from where they bounced off on the CIVA-P images.
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Nov 12 2014, 07:22 PM
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#235
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Senior Member Group: Members Posts: 2082 Joined: 13-February 10 From: Ontario Member No.: 5221 |
OSIRIS will show everything for sure, sooner or later. Maybe we night even see that.
Even Huygens bounced, and in a lot strong gravity! Paolo: I think if the harpoons are not anchored they will delay the drilling until the other science is done. Maybe they can fire them again later, spin up the flywheel just in case they fly off... |
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Nov 12 2014, 07:23 PM
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#236
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 Senior Member Group: Members Posts: 1729 Joined: 3-August 06 From: 43° 35' 53" N 1° 26' 35" E Member No.: 1004 |
if Philae is not anchored, I guess it will be a big problem for the SD2 drill...
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Nov 12 2014, 07:26 PM
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#237
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 Senior Member Group: Members Posts: 3419 Joined: 9-February 04 From: Minneapolis, MN, USA Member No.: 15 |
Okay, from what I heard it sounds like Philae may be simply resting on the surface. There was no confirmation that the drill-footholds had secured a solid hold on the surface.
If Philae is on the surface and completely unsecured, but in an attitude that allows the science instruments to work, I guess I have a question for all you physics majors out there: How much force will it take to push Philae up off of the surface again? And is that amount of force exceeded by the lander's various planned movements? -the other Doug (With my shield, not yet upon it) -------------------- “The trouble ain't that there is too many fools, but that the lightning ain't distributed right.” -Mark Twain
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Nov 12 2014, 07:27 PM
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#238
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Member Group: Members Posts: 282 Joined: 18-June 04 Member No.: 84 |
Perhaps those were OSIRIS images rather than from Philae?
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Nov 12 2014, 07:29 PM
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#239
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Junior Member Group: Members Posts: 88 Joined: 8-May 14 Member No.: 7185 |
QUOTE (Tom Tamlyn @ Nov 12 2014, 08:18 PM) Speculating that Philae landed, bounced & turned, and then landed again. Yes, and the turn was detected because the generators showed fluctuations indicating that the solar panels received changing amounts of sunlight. The rotational movement was supposedly because they turned off the flywheel upon landing which *in turn* imparted rotation to Philae. Also they lost signal a bit earlier than expected, but that could be due to imprecisions in their modelling, because of the uneven horizon of the comet. A bit weird that this first briefing didn't contain any of the post-landing images already released unofficially. |
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Nov 12 2014, 07:30 PM
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#240
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Member Group: Members Posts: 370 Joined: 12-September 05 From: France Member No.: 495 |
https://twitter.com/IASorsay/status/532600137982697472
Is saying that harpoons have been triggered but have been fully rewinded. |
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