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: 10194 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 PD: 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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Oct 27 2011, 04:07 PM
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#2
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Senior Member Group: Members Posts: 1887 Joined: 20-November 04 From: Iowa Member No.: 110 |
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Oct 27 2011, 11:10 PM
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#3
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Senior Member Group: Members Posts: 1585 Joined: 14-October 05 From: Vermont Member No.: 530 |
Sounds like they are due to the impacts of orbiting debris. If you watch the replay of the presentation that I linked to above, they mention that they are wide, flat-bottomed with steep sides. Certainly don't sound like crater chains. The also believe the ages of the equatorial ones correspond to the Rheasilvia impact and the northern ones to the older southern basin. |
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Oct 28 2011, 02:50 AM
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#4
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Member Group: Members Posts: 207 Joined: 6-March 07 From: houston, texas Member No.: 1828 |
Impact debris here would form radial or spiral from the center. These are extension cracks formed from several possible sources. Examples include shape change and reorientation. Among others. It's proving difficult to get the exact ages however and we have some numerical models yet to test. Should be interesting!
-------------------- Dr. Paul Schenk, Lunar and Planetary Institute, Houston TX
http://stereomoons.blogspot.com; http://www.youtube.com/galsat400; http://www.lpi.usra.edu/science/schenk/ |
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