Difference between revisions of "Ptolemaeus"
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| − | Lat: 9.12°S, Long: 1.85°W, Diam: 158.3 km, Depth: 2.4 km, [http://the-moon. | + | Lat: 9.12°S, Long: 1.85°W, Diam: 158.3 km, Depth: 2.4 km, [http://the-moon.us/wiki/R%C3%BCkl%2044 Rükl: 44], [http://the-moon.us/wiki/stratigraphy pre-Nectarian]<br /> |
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=Table of Contents= | =Table of Contents= | ||
| − | <div style="margin-left: 1em">[#Ptolemaeus (and Ammonius on its floor) Ptolemaeus (and Ammonius on its floor)]</div><div style="margin-left: 2em">[#Ptolemaeus (and Ammonius on its floor)-Images Images]</div><div style="margin-left: 2em">[#Ptolemaeus (and Ammonius on its floor)-Maps Maps]</div><div style="margin-left: 2em">[#Ptolemaeus (and Ammonius on its floor)-Description Description]</div><div style="margin-left: 3em">[#Ptolemaeus (and Ammonius on its floor)-Description-Elger Elger]</div><div style="margin-left: 3em">[#Ptolemaeus (and Ammonius on its floor)-Description-Wikipedia Wikipedia]</div><div style="margin-left: 2em">[#Ptolemaeus (and Ammonius on its floor)-Additional Information Additional Information]</div><div style="margin-left: 2em">[#Ptolemaeus (and Ammonius on its floor)-Nomenclature Nomenclature]</div><div style="margin-left: 2em">[#Ptolemaeus (and Ammonius on its floor)-LPOD Articles LPOD Articles]</div><div style="margin-left: 2em">[#Ptolemaeus (and Ammonius on its floor)-Bibliography Bibliography]</div></div>[http://www.lpod.org/coppermine/displayimage.php?pid=219&fullsize=1 [[Image:normal_Ptolemaeus%20AS16-M-1673.jpg|external image normal_Ptolemaeus%20AS16-M-1673.jpg]]]<br /> ''[http://lpod.org/coppermine/displayimage.php?pos=-219 Apollo AS16-M-1673 ]''from Stefan Lammel<br /> The largest one of the bowl shaped craterlets on the floor of Ptolemaeus is officially known as [http://the-moon. | + | <div style="margin-left: 1em">[#Ptolemaeus (and Ammonius on its floor) Ptolemaeus (and Ammonius on its floor)]</div><div style="margin-left: 2em">[#Ptolemaeus (and Ammonius on its floor)-Images Images]</div><div style="margin-left: 2em">[#Ptolemaeus (and Ammonius on its floor)-Maps Maps]</div><div style="margin-left: 2em">[#Ptolemaeus (and Ammonius on its floor)-Description Description]</div><div style="margin-left: 3em">[#Ptolemaeus (and Ammonius on its floor)-Description-Elger Elger]</div><div style="margin-left: 3em">[#Ptolemaeus (and Ammonius on its floor)-Description-Wikipedia Wikipedia]</div><div style="margin-left: 2em">[#Ptolemaeus (and Ammonius on its floor)-Additional Information Additional Information]</div><div style="margin-left: 2em">[#Ptolemaeus (and Ammonius on its floor)-Nomenclature Nomenclature]</div><div style="margin-left: 2em">[#Ptolemaeus (and Ammonius on its floor)-LPOD Articles LPOD Articles]</div><div style="margin-left: 2em">[#Ptolemaeus (and Ammonius on its floor)-Bibliography Bibliography]</div></div>[http://www.lpod.org/coppermine/displayimage.php?pid=219&fullsize=1 [[Image:normal_Ptolemaeus%20AS16-M-1673.jpg|external image normal_Ptolemaeus%20AS16-M-1673.jpg]]]<br /> ''[http://lpod.org/coppermine/displayimage.php?pos=-219 Apollo AS16-M-1673 ]''from Stefan Lammel<br /> The largest one of the bowl shaped craterlets on the floor of Ptolemaeus is officially known as [http://the-moon.us/wiki/Ammonius Ammonius]<br /> <br /> |
==Images== | ==Images== | ||
[http://www.lpod.org/coppermine/thumbnails.php?album=search&type=full&search=Ptolemaeus LPOD Photo Gallery] [http://www.lpi.usra.edu/resources/lunar_orbiter/bin/srch_nam.shtml?Ptolemaeus%7C0 Lunar Orbiter Images] [http://www.lpi.usra.edu/resources/apollo/search/feature/?feature=Ptolemaeus Apollo Images] [http://apollo.sese.asu.edu/LIW/20081209.html ASU Apollo Image Archive] (<u>'''WARNING:'''</u> the first two frames in the LPI's list of orbital Apollo photographs of '''Ptolemaeus''' are totally wrong, because both Apollo 10 photographs show the moon's farside; the region east of '''Joliot''' and '''Lomonosov''')(error detected by <span class="membersnap">- [http://www.wikispaces.com/user/view/DannyCaes [[Image:DannyCaes-lg.jpg|16px|DannyCaes]]] [http://www.wikispaces.com/user/view/DannyCaes DannyCaes] <small>Nov 17, 2012</small></span>).<br /> | [http://www.lpod.org/coppermine/thumbnails.php?album=search&type=full&search=Ptolemaeus LPOD Photo Gallery] [http://www.lpi.usra.edu/resources/lunar_orbiter/bin/srch_nam.shtml?Ptolemaeus%7C0 Lunar Orbiter Images] [http://www.lpi.usra.edu/resources/apollo/search/feature/?feature=Ptolemaeus Apollo Images] [http://apollo.sese.asu.edu/LIW/20081209.html ASU Apollo Image Archive] (<u>'''WARNING:'''</u> the first two frames in the LPI's list of orbital Apollo photographs of '''Ptolemaeus''' are totally wrong, because both Apollo 10 photographs show the moon's farside; the region east of '''Joliot''' and '''Lomonosov''')(error detected by <span class="membersnap">- [http://www.wikispaces.com/user/view/DannyCaes [[Image:DannyCaes-lg.jpg|16px|DannyCaes]]] [http://www.wikispaces.com/user/view/DannyCaes DannyCaes] <small>Nov 17, 2012</small></span>).<br /> | ||
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<br /> | <br /> | ||
==Maps== | ==Maps== | ||
| − | ''([http://the-moon. | + | ''([http://the-moon.us/wiki/LAC%20zone LAC zone] 77D2)'' [http://www.lpi.usra.edu/resources/mapcatalog/LAC/lac77/ LAC map] [http://www.lpi.usra.edu/resources/mapcatalog/usgs/I566/ Geologic map] [http://www.lpi.usra.edu/resources/mapcatalog/LM/lm77/ LM map] [http://www.lpi.usra.edu/resources/mapcatalog/LTO/lto77d2_1/ LTO map]<br /> <br /> |
==Description== | ==Description== | ||
<br /> | <br /> | ||
===Elger=== | ===Elger=== | ||
| − | ''([http://the-moon. | + | ''([http://the-moon.us/wiki/IAU%20Directions IAU Directions])'' PTOLEMAEUS.--Taking its very favourable position into account, this is undoubtedly the most perfect example of a walled-plain on the moon's visible superficies. It is the largest and most northerly component of the fine linear chain of great enclosures, which extend southwards, in a nearly unbroken line, to [http://the-moon.us/wiki/Walther Walther]. It exhibits a very marked departure from circularity, the outline of the border approximating in form to a hexagon with nearly straight sides. It includes an area of about 9,000 square miles, the greatest distance from side to side being about 115 miles. It is, in fact, about equal in size to the counties of York, Lancashire, and Eastmorland combined; and were it possible for one to stand near the centre of its vast floor, he might easily suppose that he was stationed on a boundless plain; for, except towards the east, not a peak, or other indication of the existence of the massive rampart would be discernible; and even in this direction he would only see the upper portion of a great mountain on the wall.<br /> The border is much broken by gaps and intersected by passes, especially W. and S., where there are several valleys connecting the interior with that of [http://the-moon.us/wiki/Alphonsus Alphonsus]. The loftiest portion of the wall, which includes many crateriform depressions, is on the E., where one peak rises to nearly 9,000 feet. Another on the N.W. is about 6,000 feet above the interior. On the N.E. is a remarkable crater-row, called, from its discoverer, "Webb's furrow," running from a point a little N. of a depression on the border to a larger crateriform depression on the S. of [http://the-moon.us/wiki/Hipparchus Hipparchus] K. Birt terms it "a very fugitive and delicate lunar feature." As regards the vast superficies enclosed by this irregular border, it is chiefly remarkable for the number of large saucer-shaped hollows which are revealed on its surface under a low sun. They are mostly found on the western quarter of the floor. Some of them appear to have very slight rims, and in two or three instances small craters may be detected within them. Owing to their shallowness, they are very evanescent, and can only be glimpsed for an hour or so about sunrise or sunset. The large bright crater A, about 4 miles in diameter on the N.E. side of the interior, is by far the most conspicuous object upon it. Adjoining it on the N. is a large ring with a low border, and N. of this again is another, extending to the wall. Mr. Maw and Mr. Mee have seen minute craters on the borders of these obscure formations. In addition to the objects just specified, there is a fairly conspicuous crater, <u>d</u>, on the N.W. quarter of the floor, and a very large number of others distributed on its surface, which is also traversed by a network of light streaks, that have recently been carefully recorded by Mr. A.S. Williams. A cleft, from near Reaumur A, traverses the N. side of the floor, and runs up to Ptolemaeus <u>d</u>.<br /> <br /> |
===Wikipedia=== | ===Wikipedia=== | ||
[http://en.wikipedia.org/wiki/Ptolemaeus_%28lunar_crater%29 Ptolemaeus]<br /> <br /> | [http://en.wikipedia.org/wiki/Ptolemaeus_%28lunar_crater%29 Ptolemaeus]<br /> <br /> | ||
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* IAU page: [http://planetarynames.wr.usgs.gov/Feature/4860 Ptolemaeus] | * IAU page: [http://planetarynames.wr.usgs.gov/Feature/4860 Ptolemaeus] | ||
| − | * Depth data from [http://the-moon. | + | * Depth data from [http://the-moon.us/wiki/Kurt%20Fisher%20crater%20depths Kurt Fisher database] |
** Westfall, 2000: 2.4 km | ** Westfall, 2000: 2.4 km | ||
** Cherrington, 1969: 2.98 km | ** Cherrington, 1969: 2.98 km | ||
| − | * Ptolemaeus A is a thermal anomaly crater, implying a youthful age - [http://the-moon. | + | * Ptolemaeus A is a thermal anomaly crater, implying a youthful age - [http://the-moon.us/wiki/Moore%20et%20al%2C%201980 Moore et al, 1980] |
| − | * According to [http://www.lpod.org/?page_id=1593 Both (1971)], the saucers on the floor of Ptolemaeus were discovered by [http://the-moon. | + | * According to [http://www.lpod.org/?page_id=1593 Both (1971)], the saucers on the floor of Ptolemaeus were discovered by [http://the-moon.us/wiki/Kunowsky Kunowsky]. |
* A curious field of small domes is noticeable near the southern part of Ptolemaeus's rim (on its floor), which is an interesting target for dedicated observers (with not-too-small telescopes). Discovered by Danny Caes on orbital B&W ''Hasselblad'' photographs made during the mission of Apollo 16. See frames [http://www.lpi.usra.edu/resources/apollo/frame/?AS16-124-19839 AS16-124-19839], [http://www.lpi.usra.edu/resources/apollo/frame/?AS16-124-19840 19840], [http://www.lpi.usra.edu/resources/apollo/frame/?AS16-124-19841 19841], [http://www.lpi.usra.edu/resources/apollo/frame/?AS16-124-19842 19842], [http://www.lpi.usra.edu/resources/apollo/frame/?AS16-124-19843 19843], and [http://www.lpi.usra.edu/resources/apollo/frame/?AS16-124-19844 19844]. | * A curious field of small domes is noticeable near the southern part of Ptolemaeus's rim (on its floor), which is an interesting target for dedicated observers (with not-too-small telescopes). Discovered by Danny Caes on orbital B&W ''Hasselblad'' photographs made during the mission of Apollo 16. See frames [http://www.lpi.usra.edu/resources/apollo/frame/?AS16-124-19839 AS16-124-19839], [http://www.lpi.usra.edu/resources/apollo/frame/?AS16-124-19840 19840], [http://www.lpi.usra.edu/resources/apollo/frame/?AS16-124-19841 19841], [http://www.lpi.usra.edu/resources/apollo/frame/?AS16-124-19842 19842], [http://www.lpi.usra.edu/resources/apollo/frame/?AS16-124-19843 19843], and [http://www.lpi.usra.edu/resources/apollo/frame/?AS16-124-19844 19844]. | ||
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==LPOD Articles== | ==LPOD Articles== | ||
| − | [http:// | + | [http://www2.lpod.org/wiki/November_27,_2006 A Long Line in a Clutter of Magnificence.]<br /> [http://www2.lpod.org/wiki/April_6,_2006 Micro-Topo]<br /> [http://www2.lpod.org/wiki/April_8,_2005 Cups & Saucers]<br /> [http://www2.lpod.org/wiki/August_12,_2004 Ptolemy's Strange Floor]<br /> [http://www2.lpod.org/wiki/May_15,_2004 The Golden Triad]<br /> [http://www2.lpod.org/wiki/March_4,_2004 Ptolemaeus Peak Heights]<br /> [http://www2.lpod.org/wiki/March_3,_2004 Ptolemaic Sunset]<br /> [http://the-moon.us/wiki/LPOD%20May%2015%2C%202008 Unfamiliar Territory]<br /> [http://lpod.wikispaces.com/January%2028%2C%202009 Ramparts] (wonderful sunrise shadows on the floor of Ptolemaeus!)<br /> [http://lpod.wikispaces.com/September%204%2C%202014 Nessie] (peculiar clair-obscur effect, discovered by Joe Adlhoch, Colorado)<br /> <br /> |
==Bibliography== | ==Bibliography== | ||
| − | * ''[http://the-moon. | + | * ''[http://the-moon.us/wiki/NASA%20SP-362 Apollo Over the Moon] -- A View from Orbit'' |
** Chapter 3: The Terrae ([http://www.hq.nasa.gov/office/pao/History/SP-362/ch3.2.htm Part 2]), Figures 54 and 55. | ** Chapter 3: The Terrae ([http://www.hq.nasa.gov/office/pao/History/SP-362/ch3.2.htm Part 2]), Figures 54 and 55. | ||
| − | ** Chapter 5: Craters ([http://www.hq.nasa.gov/office/pao/History/SP-362/ch5.3.htm Part 3]), Figures 128, 129, 132, 133 (several regions in and near '''Ptolemaeus''', and also near [http://the-moon. | + | ** Chapter 5: Craters ([http://www.hq.nasa.gov/office/pao/History/SP-362/ch5.3.htm Part 3]), Figures 128, 129, 132, 133 (several regions in and near '''Ptolemaeus''', and also near [http://the-moon.us/wiki/Albategnius Albategnius]). |
* MacRobert, Alan. 1991. Sunrise on Ptolemaeus. ''Sky and Telescope'' vol. 81, no. 6 (June issue), pp. 631-633. ''includes photo by Strathmore R. B. Cooke, taken 1965 April 9, 3:19 UT, showing early streaks of sunlight on floor'' | * MacRobert, Alan. 1991. Sunrise on Ptolemaeus. ''Sky and Telescope'' vol. 81, no. 6 (June issue), pp. 631-633. ''includes photo by Strathmore R. B. Cooke, taken 1965 April 9, 3:19 UT, showing early streaks of sunlight on floor'' | ||
* Wood, C.A. Jun. 2002. Exploring Ptolemaeus. ''Sky and Telescope'' June 2002 (vol. 103) p. 106. | * Wood, C.A. Jun. 2002. Exploring Ptolemaeus. ''Sky and Telescope'' June 2002 (vol. 103) p. 106. | ||
<br /> <br /> | <br /> <br /> | ||
---- | ---- | ||
| − | [http://the-moon. | + | [http://the-moon.us/wiki/Alphabetical%20Index Named Features] -- Prev: [http://the-moon.us/wiki/Protagoras Protagoras] -- Next: [http://the-moon.us/wiki/Puiseux Puiseux]<br /> |
---- | ---- | ||
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Revision as of 20:27, 11 April 2018
Contents
Ptolemaeus (and Ammonius on its floor)
|
Lat: 9.12°S, Long: 1.85°W, Diam: 158.3 km, Depth: 2.4 km, Rükl: 44, pre-Nectarian |
Table of Contents
[#Ptolemaeus (and Ammonius on its floor) Ptolemaeus (and Ammonius on its floor)]
[#Ptolemaeus (and Ammonius on its floor)-Images Images]
[#Ptolemaeus (and Ammonius on its floor)-Maps Maps]
[#Ptolemaeus (and Ammonius on its floor)-Description Description]
[#Ptolemaeus (and Ammonius on its floor)-Description-Elger Elger]
[#Ptolemaeus (and Ammonius on its floor)-Description-Wikipedia Wikipedia]
[#Ptolemaeus (and Ammonius on its floor)-Additional Information Additional Information]
[#Ptolemaeus (and Ammonius on its floor)-Nomenclature Nomenclature]
[#Ptolemaeus (and Ammonius on its floor)-LPOD Articles LPOD Articles]
[#Ptolemaeus (and Ammonius on its floor)-Bibliography Bibliography]
Apollo AS16-M-1673 from Stefan Lammel
The largest one of the bowl shaped craterlets on the floor of Ptolemaeus is officially known as Ammonius
Images
LPOD Photo Gallery Lunar Orbiter Images Apollo Images ASU Apollo Image Archive (WARNING: the first two frames in the LPI's list of orbital Apollo photographs of Ptolemaeus are totally wrong, because both Apollo 10 photographs show the moon's farside; the region east of Joliot and Lomonosov)(error detected by - DannyCaes DannyCaes Nov 17, 2012).
- A rather strange look at Ptolemaeus's floor is seen in one of the oblong orbital photographs made during the mission of Luna 22. In this photograph, Ptolemaeus was captured at the central part of the oblong frame (scroll to the right, to the frame's centre).- DannyCaes DannyCaes Aug 8, 2010
Maps
(LAC zone 77D2) LAC map Geologic map LM map LTO map
Description
Elger
(IAU Directions) PTOLEMAEUS.--Taking its very favourable position into account, this is undoubtedly the most perfect example of a walled-plain on the moon's visible superficies. It is the largest and most northerly component of the fine linear chain of great enclosures, which extend southwards, in a nearly unbroken line, to Walther. It exhibits a very marked departure from circularity, the outline of the border approximating in form to a hexagon with nearly straight sides. It includes an area of about 9,000 square miles, the greatest distance from side to side being about 115 miles. It is, in fact, about equal in size to the counties of York, Lancashire, and Eastmorland combined; and were it possible for one to stand near the centre of its vast floor, he might easily suppose that he was stationed on a boundless plain; for, except towards the east, not a peak, or other indication of the existence of the massive rampart would be discernible; and even in this direction he would only see the upper portion of a great mountain on the wall.
The border is much broken by gaps and intersected by passes, especially W. and S., where there are several valleys connecting the interior with that of Alphonsus. The loftiest portion of the wall, which includes many crateriform depressions, is on the E., where one peak rises to nearly 9,000 feet. Another on the N.W. is about 6,000 feet above the interior. On the N.E. is a remarkable crater-row, called, from its discoverer, "Webb's furrow," running from a point a little N. of a depression on the border to a larger crateriform depression on the S. of Hipparchus K. Birt terms it "a very fugitive and delicate lunar feature." As regards the vast superficies enclosed by this irregular border, it is chiefly remarkable for the number of large saucer-shaped hollows which are revealed on its surface under a low sun. They are mostly found on the western quarter of the floor. Some of them appear to have very slight rims, and in two or three instances small craters may be detected within them. Owing to their shallowness, they are very evanescent, and can only be glimpsed for an hour or so about sunrise or sunset. The large bright crater A, about 4 miles in diameter on the N.E. side of the interior, is by far the most conspicuous object upon it. Adjoining it on the N. is a large ring with a low border, and N. of this again is another, extending to the wall. Mr. Maw and Mr. Mee have seen minute craters on the borders of these obscure formations. In addition to the objects just specified, there is a fairly conspicuous crater, d, on the N.W. quarter of the floor, and a very large number of others distributed on its surface, which is also traversed by a network of light streaks, that have recently been carefully recorded by Mr. A.S. Williams. A cleft, from near Reaumur A, traverses the N. side of the floor, and runs up to Ptolemaeus d.
Wikipedia
Additional Information
- IAU page: Ptolemaeus
- Depth data from Kurt Fisher database
- Westfall, 2000: 2.4 km
- Cherrington, 1969: 2.98 km
- Ptolemaeus A is a thermal anomaly crater, implying a youthful age - Moore et al, 1980
- According to Both (1971), the saucers on the floor of Ptolemaeus were discovered by Kunowsky.
- A curious field of small domes is noticeable near the southern part of Ptolemaeus's rim (on its floor), which is an interesting target for dedicated observers (with not-too-small telescopes). Discovered by Danny Caes on orbital B&W Hasselblad photographs made during the mission of Apollo 16. See frames AS16-124-19839, 19840, 19841, 19842, 19843, and 19844.
Nomenclature
- Named for Claudius Ptolemy (c. 87-150), a Greek astronomer, mathematician, geographer.
LPOD Articles
A Long Line in a Clutter of Magnificence.
Micro-Topo
Cups & Saucers
Ptolemy's Strange Floor
The Golden Triad
Ptolemaeus Peak Heights
Ptolemaic Sunset
Unfamiliar Territory
Ramparts (wonderful sunrise shadows on the floor of Ptolemaeus!)
Nessie (peculiar clair-obscur effect, discovered by Joe Adlhoch, Colorado)
Bibliography
- Apollo Over the Moon -- A View from Orbit
- Chapter 3: The Terrae (Part 2), Figures 54 and 55.
- Chapter 5: Craters (Part 3), Figures 128, 129, 132, 133 (several regions in and near Ptolemaeus, and also near Albategnius).
- MacRobert, Alan. 1991. Sunrise on Ptolemaeus. Sky and Telescope vol. 81, no. 6 (June issue), pp. 631-633. includes photo by Strathmore R. B. Cooke, taken 1965 April 9, 3:19 UT, showing early streaks of sunlight on floor
- Wood, C.A. Jun. 2002. Exploring Ptolemaeus. Sky and Telescope June 2002 (vol. 103) p. 106.
Named Features -- Prev: Protagoras -- Next: Puiseux
This page has been edited 1 times. The last modification was made by - tychocrater tychocrater on Jun 13, 2009 3:24 pm - afx2u3
