Difference between revisions of "January 26, 2015"
(Created page with "__NOTOC__ =Hippalus Arcs= Originally published January 26, 2004 <table width="85%" border="0" align="center" cellpadding="6" cellspacing="2"> <tr> </tr> </table> <table width...") |
|||
| Line 46: | Line 46: | ||
<td><p align="center" class="main_titles"><b>Author & Editor:</b><br> | <td><p align="center" class="main_titles"><b>Author & Editor:</b><br> | ||
[mailto:tychocrater@yahoo.com Charles A. Wood]</p> | [mailto:tychocrater@yahoo.com Charles A. Wood]</p> | ||
| − | < | + | <!-- Cleanup of credits --> |
| − | + | <!-- Cleanup of credits --> | |
| − | < | + | <!-- Cleanup of credits --> |
| − | + | <!-- Cleanup of credits --> | |
| − | < | + | <!-- Cleanup of credits --> |
| − | + | <!-- Cleanup of credits --> | |
| + | <!-- Cleanup of credits --> | ||
</tr> | </tr> | ||
</table> | </table> | ||
| Line 61: | Line 62: | ||
Register, and click on the <b>Discussion</b> tab at the top of the page. | Register, and click on the <b>Discussion</b> tab at the top of the page. | ||
<hr> | <hr> | ||
| + | <!-- | ||
You can support LPOD when you buy any book from Amazon thru [[Support_ LPOD|LPOD]]! | You can support LPOD when you buy any book from Amazon thru [[Support_ LPOD|LPOD]]! | ||
| + | --> | ||
<span style="font-size:88%"> | <span style="font-size:88%"> | ||
<center> | <center> | ||
Revision as of 12:09, 1 February 2015
Hippalus Arcs
Originally published January 26, 2004
 |
Image Credit: Stephen Keene |
|
Hippalus Arcs Impact basins are characterized by a family of features such as multiple rims, concentric fractures and ridges, a central depression, radial markings, and extensive ejecta deposits. This list results not from a single perfect basin, but from recognizing consistent patterns in all the Moon's basins. The best place on the Moon to see basin-centered concentric rilles is near the crater Hippalus on the east side of Mare Humorum. In this remarkable image by Stephen Keene, Hippalus is the large (58 km wide) crater with a breached rim on the right side of the image, and part of Campanus is visible on the left (south up). Arcing through the middle of the image is a family of three prominent rilles whose radii of curvature point to a central focus somewhere in the middle of Mare Humorum, to the right. The low lighting reveals fragments of additional concentric and non-concentric rilles that show up better than on higher resolution Lunar Orbiter images. And in the center upper half of the picture is a small rimless pit that seems to be at the summit of a very low swelling. Is this a dome? A previously unknown one? Technical Details: Related Links: Tomorrow's LPOD: Davy's Chain |
Author & Editor: |
COMMENTS?
Register, and click on the Discussion tab at the top of the page.
Contributions to http://www2.lpod.org/ are licensed under a Creative Commons Attribution No-Derivative-Works Non-Commercial 3.0 License. 
