Difference between revisions of "October 9, 2004"
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=Marginal Maria= | =Marginal Maria= | ||
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| − | + | <td width="50%"><h2><nobr>Marginal Maria</nobr></h2></td> | |
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| − | + | onMouseOver = "document.images['main_image'].src='archive/2004/10/images/LPOD-2004-10-09b.jpeg'; return true" | |
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<table width="80%" border="0" align="center" cellpadding="8"> | <table width="80%" border="0" align="center" cellpadding="8"> | ||
| − | + | <tr><td><div align="center" class="main_sm">Image Credit: [http://astrogeology.usgs.gov/lo-cgi-bin/frameListPage.pl?mission=4&frame=165 Lunar Orbiter IV-163-H3] and [mailto:kcpaulhk@yahoo.com.hk KC Pau]</p> | |
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| − | + | <p align="center"><b>Marginal Maria</b></p> | |
| − | + | <p align="left">East of Crisium, when the lighting is right and libration favorable, the limb is dark and smooth with the odd mare called Marginis. This is a very appropriate name, for this patch of dark mare material is at the visible margin of the Moon, but its also only marginally deserving the name "mare" and unlike most mare, there is almost no evidence that it is inside an impact basin. The mare itself covers a small area between Goddard and Neper, and those craters and a few others are filled with dark lava. Two roughly N-S parallel patches of mare west of Marginis are quite noticeable, but were unnamed, so in <i>The Modern Moon </i> I christened them Lacus Risus Felis - the Cat's Smile. According to Clementine altimetry, the floor of Mare Marginis is 3 km lower than the average lunar radius, and there is also a small mascon - a mass concentration - so perhaps there is a basin somewhere under Marginis after all. On the mouseover image there are a number of italic letters "S". These are swirls - bright streaks like [http://www.lpod.org/archive/2004/02/LPOD-2004-02-02.htm Reiner Gamma] that are mysterious in origin. These streaks are the illusive L100 in the Lunar 100 list.</p> | |
| − | + | <blockquote><p align="right">— [mailto:tychocrater@yahoo.com Chuck Wood]</blockquote> | |
<p align="left"><p><b>Technical Details:</b><br> | <p align="left"><p><b>Technical Details:</b><br> | ||
Left image from Lunar Orbiter IV and right image from K.C. Pau.</p> | Left image from Lunar Orbiter IV and right image from K.C. Pau.</p> | ||
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<br>[http://skyandtelescope.com/observing/objects/moon/ Lunar 100] | <br>[http://skyandtelescope.com/observing/objects/moon/ Lunar 100] | ||
<p align="left"><b>Tomorrow's LPOD: </b> Professor and Student</p> | <p align="left"><b>Tomorrow's LPOD: </b> Professor and Student</p> | ||
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| − | + | <td><hr></td> | |
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| − | + | <p align="center" class="main_titles"><b>Author & Editor:</b><br> | |
| − | + | [mailto:tychocrater@yahoo.com Charles A. Wood]</p> | |
| − | + | <p align="center" class="main_titles"><b>Technical Consultant:</b><br> | |
| − | + | [mailto:anthony@perseus.gr Anthony Ayiomamitis]</p> | |
| − | + | <p align="center" class="main_titles"><b>Contact Translator:</b><br> | |
| − | + | [mailto:pablolonnie@yahoo.com.mx" class="one Pablo Lonnie Pacheco Railey] (Es)<br> | |
| − | + | [mailto:chlegrand@free.fr" class="one Christian Legrand] (Fr)</p> | |
| − | + | <p align="center" class="main_titles"><b>[mailto:webuser@observingthesky.org Contact Webmaster]</b></p> | |
| − | + | <p align="center" class="main_titles"><b>A service of:</b><br> | |
| − | + | [http://www.observingthesky.org/" class="one ObservingTheSky.Org]</p> | |
| − | + | <p align="center" class="main_titles"><b>Visit these other PODs:</b> <br> | |
| − | + | [http://antwrp.gsfc.nasa.gov/apod/astropix.html" class="one Astronomy] | [http://www.msss.com/" class="one Mars] | [http://epod.usra.edu/" class="one Earth]</p> | |
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<p> </p> | <p> </p> | ||
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===COMMENTS?=== | ===COMMENTS?=== | ||
Click on this icon [[image:PostIcon.jpg]] at the upper right to post a comment. | Click on this icon [[image:PostIcon.jpg]] at the upper right to post a comment. | ||
Revision as of 18:26, 4 January 2015
Marginal Maria
<nobr>Marginal Maria</nobr> |
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Image Credit: Lunar Orbiter IV-163-H3 and KC Pau
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Marginal Maria East of Crisium, when the lighting is right and libration favorable, the limb is dark and smooth with the odd mare called Marginis. This is a very appropriate name, for this patch of dark mare material is at the visible margin of the Moon, but its also only marginally deserving the name "mare" and unlike most mare, there is almost no evidence that it is inside an impact basin. The mare itself covers a small area between Goddard and Neper, and those craters and a few others are filled with dark lava. Two roughly N-S parallel patches of mare west of Marginis are quite noticeable, but were unnamed, so in The Modern Moon I christened them Lacus Risus Felis - the Cat's Smile. According to Clementine altimetry, the floor of Mare Marginis is 3 km lower than the average lunar radius, and there is also a small mascon - a mass concentration - so perhaps there is a basin somewhere under Marginis after all. On the mouseover image there are a number of italic letters "S". These are swirls - bright streaks like Reiner Gamma that are mysterious in origin. These streaks are the illusive L100 in the Lunar 100 list. Technical Details: Related Links: Tomorrow's LPOD: Professor and Student |
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Author & Editor: Technical Consultant: Contact Translator: A service of: Visit these other PODs: |
COMMENTS?
Click on this icon File:PostIcon.jpg at the upper right to post a comment.
