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Rosetta flyby of Asteroid Lutetia
Guest_cassioli_*
post Jul 23 2010, 04:17 PM
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can you image ESA using same policy on its images? rolleyes.gif
http://www.jpl.nasa.gov/news/news.cfm?rele...mp;auid=6688535
QUOTE
Advanced users with large bandwidth, powerful computers and software capable of handling images in the gigabyte range can download the full-resolution map in sections at: http://www.mars.asu.edu/data/thm_dir_100m .
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Stu
post Jul 23 2010, 04:41 PM
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Here's a great Mars imagery site using European data...

http://hrscview.fu-berlin.de/hw2_how_to.html


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Phil Stooke
post Jul 23 2010, 04:56 PM
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And here too:

http://global-data.mars.asu.edu/bin/hrsc.pl

(Zoom in, select an image, click on its thumbnail and it opens a zoomify-type window which lets you go in to full resolution like the HiRISE or LROC viewers)



Actually that wonderful Themis page linked to in the quote box just above also has that kind of zoomify version if you click on 'Interactive Map'. Saves on the gigabyte downloads!

Phil


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brellis
post Jul 25 2010, 08:45 PM
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How did the encounter affect Rosetta's path? Did the velocity/trajectory change much? I've been poking around the ESA site, and scanned thru this thread, not finding answers. Understandably, all the recent articles emphasize the science and details of the encounter itself.

"Swing by" is used to describe Rosetta's previous close encounters with Earth and Mars, as opposed to "flyby" here. I presume that denotes proximity and scientific priority.
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Paolo
post Jul 25 2010, 08:58 PM
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I think it is too early to tell. But from the latest status report

QUOTE
The ultra-stable oscillator (USO) is ON/muted since DOY 032/2010. The RSI team will use the two-way radiometric data acquired during the closest approach phase with a 70-metre ground station radio dish to estimate the mass and the density of the asteroid (21) Lutetia, thus answering one of the most intriguing scientific questions.

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PDP8E
post Jul 25 2010, 10:50 PM
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Closest approach was at a distance of 3,162 km (1,977 miles) -- that is the distance between Boston and Denver -- or between Paris and Cairo - the closing rate was 15km/sec (!) The amount of bend (and/or speedup or slowdown) to Rosetta's trajectory due to the encounter will be minuscule, but somebody at ESA will measure it! We will have to see what the USO says....


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cndwrld
post Jul 26 2010, 10:17 AM
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FYI, I checked with the science team, and there will not be any more images released from the flyby until after the initial results are presented at a conference in September.


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elakdawalla
post Jul 26 2010, 04:19 PM
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Thanks for checking on that. Which conference? Is it EPSC in Rome?


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Paolo
post Jul 26 2010, 04:26 PM
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the real question is: how much time after the conference? rolleyes.gif
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ElkGroveDan
post Jul 26 2010, 07:08 PM
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QUOTE (cndwrld @ Jul 26 2010, 02:17 AM) *
there will not be any more images released from the flyby until after the initial results are presented at a conference in September.

September of what year?


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djellison
post Jul 26 2010, 07:33 PM
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I'm assuming Europlanet. And then it'll be an image or two in papers and nothing more.

I've going a different route. Rosetta has an awesome Navigation camera - in the hands of the same sorts of people who look after MEX's VMC. I wonder if they'll be more data share friendly.
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ElkGroveDan
post Jul 26 2010, 07:41 PM
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Good point Doug. MEX's VMC has been a real treat. Kudos to their team for that.


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rlorenz
post Jul 27 2010, 12:31 AM
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QUOTE (Paolo @ Jul 25 2010, 04:58 PM) *
I think it is too early to tell.


Actually there was a brief report at COSPAR in Bremen on thursday evening. Martin Patzold reported the
Doppler results. If I recall correctly the velocity change was of the order of 0.3mm/s, which translated into
a density of 2500 kg/m3 with large error bars (in part because they don't have a volume from imagery
yet) There is also an ambiguity in the retrieval of the gravity figure due to uncertainty in the
flyby distance (which again further analysis - the encounter was just days before the meeting after all -
will improve)

What I thought was cool was that the Doppler profile was actually dominated by the slew
of the high gain antenna.... I guess it moves by 0.1-1m over the course of an hour or so, so that
seems about right
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cndwrld
post Jul 27 2010, 07:06 AM
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QUOTE (elakdawalla @ Jul 26 2010, 06:19 PM) *
Thanks for checking on that. Which conference? Is it EPSC in Rome?


Yup, that's the one. I'm going this year, so I'm looking forward to their show.


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machi
post Jul 27 2010, 07:23 AM
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"Rosetta has an awesome Navigation camera - in the hands of the same sorts of people who look after MEX's VMC. I wonder if they'll be more data share friendly."
Question is, if some data from NC was transferred to Earth.
But NC looks promising for future 67P/Čurjumov-Gerasimenko orbits.

"density of 2500 kg/m3"
So Lutetia is probably C asteroid?


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