HAMO, (aka High Altitude Mapping Orbit) |
HAMO, (aka High Altitude Mapping Orbit) |
Sep 1 2011, 01:12 PM
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#1
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Solar System Cartographer Group: Members Posts: 10229 Joined: 5-April 05 From: Canada Member No.: 227 |
According to Dawn (who ought to know) the descent to the next mapping orbit is beginning now.
"NASA_Dawn NASA's Dawn Mission I'm done with Survey science operations today!! Time for a several-week transfer down to High Altitude Mapping Orbit (HAMO)!! 20 hours ago" Better pics on the way! Thanks, Dawn team, for the pictures so far. Will we learn of any preliminary nomenclature soon? Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PDF: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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Sep 21 2011, 06:53 PM
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#2
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Member Group: Members Posts: 813 Joined: 29-December 05 From: NE Oh, USA Member No.: 627 |
GSA meeting 10/12/11... DAWN session
Dawn at Vesta: Initial Results from the Survey Orbit http://gsa.confex.com/gsa/2011AM/finalprog...ssion_28729.htm 12 presentations! Craig |
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Sep 22 2011, 04:18 PM
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#3
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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 |
12 presentations! abstract mostly do not reflect the results of the first weeks in orbit. but there are some exceptions. I found this intriguing: QUOTE Curiously, first crater counts from lower resolution images of the south polar depression suggest surface model ages similar to ages for northern cratered regions, despite the highly deformed state of the south polar surface. from http://gsa.confex.com/gsa/2011AM/finalprog...ract_198143.htm |
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Sep 22 2011, 05:22 PM
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#4
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Senior Member Group: Moderator Posts: 3242 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
It makes some sense. The reason you think everything outside of Rheasilvia is older is because of the plethora of little impact craters that saturate much of the rest of Vesta (except around the snowmen) that you just don't see in it. The age estimate from lower res images like uses craters larger than these little guys and for those you could make the argument that there really aren't that many more outside the big crater than outside.
Perhaps the saturated crater population are secondaries from the big giant impact which basically reset the cratering age of Vesta. Only those secondaries that fell outside the crater which shall not be named survived. The larger craters, like the snowmen, formed after it.
Reason for edit: Because Phil Made Fun of Me
-------------------- &@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io |
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