Difference between revisions of "May 18, 2010"
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| − | <em>narrow angle camera LRO image from [mailto:tychocrater@yahoo.com Chuck Wood]</em><br /> | + | <em>narrow angle camera LRO image from [http://lroc.sese.asu.edu/news/index.php?/archives/217-In-an-instant!.html#extended LROC Featured Image] [NASA/GSFC/Arizona State University]</em><br /> |
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| + | This farside crater is so fresh we almost ought to check previous images to make sure it hadn't formed in the last few weeks. It is five km across and a classic simple crater. But we are used to seeing even fresh simple craters with enough downslope movement of debris to cover the boulders that resulted from shattering of rocks by the impact. The dark material on the floor and draping parts of the rim is impact melt glass, ejected at the end of the crater formation. I looked on the half meter full res [http://wms.lroc.asu.edu/lroc_browse/view/M125733619 image] and didn't notice any more recent impact craters. And [http://www.mapaplanet.org/explorer-bin/explorer.cgi?map=Moon&layers=moon_clementine_bw&west=181.47&south=7.23&east=184.29&north=8.66&center_lat=&center=182.885&defaultcenter=on&grid=none&stretch=none&projection=SIMP&r=1&g=1&b=1&advoption=NO&info=NO&resolution=256&scale=0.05922&imageTopX=-21350.7187534124&imageTopY=251677.8899934143 Clementine] shows why the impact melt is just on one half of the rim - it was an oblique impact.<br /> | ||
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| + | <em>[mailto:tychocrater@yahoo.com Chuck Wood]</em><br /> | ||
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<strong>Technical Details</strong><br /> | <strong>Technical Details</strong><br /> | ||
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| − | + | <p><b>Yesterday's LPOD:</b> [[May 17, 2010|Show Me the Moon]] </p> | |
| + | <p><b>Tomorrow's LPOD:</b> [[May 19, 2010|Eskimo Moon]] </p> | ||
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Latest revision as of 19:53, 8 February 2015
Lunar Poppy
narrow angle camera LRO image from LROC Featured Image [NASA/GSFC/Arizona State University]
This farside crater is so fresh we almost ought to check previous images to make sure it hadn't formed in the last few weeks. It is five km across and a classic simple crater. But we are used to seeing even fresh simple craters with enough downslope movement of debris to cover the boulders that resulted from shattering of rocks by the impact. The dark material on the floor and draping parts of the rim is impact melt glass, ejected at the end of the crater formation. I looked on the half meter full res image and didn't notice any more recent impact craters. And Clementine shows why the impact melt is just on one half of the rim - it was an oblique impact.
Chuck Wood
Technical Details
The crater is at 8.0°N, 182.2°E
Yesterday's LPOD: Show Me the Moon
Tomorrow's LPOD: Eskimo Moon
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