Difference between revisions of "July 26, 2007"

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<p><em>left image by [mailto:achille_giordano@yahoo.it Achille Giordano], Naples, Italy; right image from [http://www.lpi.usra.edu/resources/apollo/frame/?AS17-151-23261 Ap17-151-23261]</em></p>
 
<p><em>left image by [mailto:achille_giordano@yahoo.it Achille Giordano], Naples, Italy; right image from [http://www.lpi.usra.edu/resources/apollo/frame/?AS17-151-23261 Ap17-151-23261]</em></p>
 
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Is Achille&#8217;s image the first knowingly taken of the 5 km wide crater [http://the-moon.wikispaces.com/Petit Petit]? I know that I have observed this region and must have seen the bright crater, but did not guess that it had a name. Is it called Petit because of its size? Or because 151 years ago Frederic Petit announced the discovery of a very small [http://www.math.ucdavis.edu/~cheung/lilith.html second Moon] that circled Earth every 2 hours 44 minutes and 59 seconds? No, the name was approved in 1976 not for these lunar reasons, but only because it appeared on a large scale topographic [http://www.lpi.usra.edu/resources/mapcatalog/LTO/lto62c4_1/ map] published by NASA in 1974. Despite this inauspicious naming, the little crater does serve one of the main goals of a named piece of geography - it is a landmark. It is almost blindingly bright at [http://www.lpod.org/coppermine/displayimage.php?album=28&#038;pos=80 full Moon] and as the Apollo 17 image reveals, it is a dramtic oblique impact feature. I bet that everyone will knowingly observe it now.</p>
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Is Achille&#8217;s image the first knowingly taken of the 5 km wide crater [https://the-moon.us/wiki/Petit Petit]? I know that I have observed this region and must have seen the bright crater, but did not guess that it had a name. Is it called Petit because of its size? Or because 151 years ago Frederic Petit announced the discovery of a very small [http://www.math.ucdavis.edu/~cheung/lilith.html second Moon] that circled Earth every 2 hours 44 minutes and 59 seconds? No, the name was approved in 1976 not for these lunar reasons, but only because it appeared on a large scale topographic [http://www.lpi.usra.edu/resources/mapcatalog/LTO/lto62c4_1/ map] published by NASA in 1974. Despite this inauspicious naming, the little crater does serve one of the main goals of a named piece of geography - it is a landmark. It is almost blindingly bright at [http://www.lpod.org/coppermine/displayimage.php?album=28&#038;pos=80 full Moon] and as the Apollo 17 image reveals, it is a dramtic oblique impact feature. I bet that everyone will knowingly observe it now.</p>
 
<p>[mailto:tychocrater@yahoo.com Chuck Wood]</p>
 
<p>[mailto:tychocrater@yahoo.com Chuck Wood]</p>
 
<p><strong>Technical Details:</strong><br />
 
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<p><b>Yesterday's LPOD:</b> [[July 25, 2007|How High Are Rims?]] </p>
 
<p><b>Yesterday's LPOD:</b> [[July 25, 2007|How High Are Rims?]] </p>
 
<p><b>Tomorrow's LPOD:</b> [[July 27, 2007|Half a Circle]] </p>
 
<p><b>Tomorrow's LPOD:</b> [[July 27, 2007|Half a Circle]] </p>
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<div align="center">Don&#8217;t forget to add yourself to the growing list (91 so far) of lunatics at<br />
 
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Latest revision as of 19:22, 18 August 2018

Small Spectacular

AS17&Giord-Petit-LPOD.jpg

left image by Achille Giordano, Naples, Italy; right image from Ap17-151-23261

Is Achille’s image the first knowingly taken of the 5 km wide crater Petit? I know that I have observed this region and must have seen the bright crater, but did not guess that it had a name. Is it called Petit because of its size? Or because 151 years ago Frederic Petit announced the discovery of a very small second Moon that circled Earth every 2 hours 44 minutes and 59 seconds? No, the name was approved in 1976 not for these lunar reasons, but only because it appeared on a large scale topographic map published by NASA in 1974. Despite this inauspicious naming, the little crater does serve one of the main goals of a named piece of geography - it is a landmark. It is almost blindingly bright at full Moon and as the Apollo 17 image reveals, it is a dramtic oblique impact feature. I bet that everyone will knowingly observe it now.

Chuck Wood

Technical Details:
22 April, 2007, 19:51UT. ETX 125 Mak f/15 + 2X Barlow Apo +DMK 21AF04 As, 257 frames stacked in Registax 4.

Related Links:
Rükl chart 38

Yesterday's LPOD: How High Are Rims?

Tomorrow's LPOD: Half a Circle

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