Difference between revisions of "Pytheas"
(Created page with "<div id="content_view" class="wiki" style="display: block"> =Pytheas= {| class="wiki_table" | Lat: 20.5°N, Long: 20.6°W, Diam: 20 km, Depth: 2.54 km, [http://the-moon.wi...") |
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| − | Lat: 20.5°N, Long: 20.6°W, Diam: 20 km, Depth: 2.54 km, [http://the-moon. | + | Lat: 20.5°N, Long: 20.6°W, Diam: 20 km, Depth: 2.54 km, [http://the-moon.us/wiki/R%C3%BCkl%2020 Rükl: 20], [http://the-moon.us/wiki/Stratigraphy Copernican]<br /> |
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<div id="toc"> | <div id="toc"> | ||
| − | + | [http://www.lpod.org/coppermine/albums/userpics/Pytheas_LO-IV-126H_LTVT.JPG [[Image:Normal_Pytheas_LO-IV-126H_LTVT.JPG|external image normal_Pytheas_LO-IV-126H_LTVT.JPG]]]<br /> ''[http://lpod.org/coppermine/displayimage.php?pos=-2594 LO-IV-126H]'' The 5-km diameter crater above '''Pytheas''' is '''Pytheas D'''.<br /> <br /> | |
| − | |||
==Images== | ==Images== | ||
[http://www.lpod.org/coppermine/thumbnails.php?album=search&type=full&search=Pytheas LPOD Photo Gallery] [http://www.lpi.usra.edu/resources/lunar_orbiter/bin/srch_nam.shtml?Pytheas%7C0 Lunar Orbiter Images] [http://www.lpi.usra.edu/resources/apollo/search/feature/?feature=Pytheas Apollo Images]<br /> '''- Pytheas Beta''', the hillock at 20° North/ 24° West which was once called '''''Mount Dyson''''' by Percy Wilkins and Patrick Moore, was captured on several frames of Apollo 17's orbital panoramic ''ITEK''-camera. One of them, frame [http://www.lpi.usra.edu/resources/apollo/frame/?AS17-P-3090 AS17-P-3090], shows '''''Mount Dyson''''' ('''Pytheas Beta''') pretty well.<br /> - Is '''Pytheas G''' a craterlet with central peak? See [http://www.lpi.usra.edu/resources/apollo/frame/?AS17-P-3074 AS17-P-3074].<br /> Additional research orbital Apollo 17 photography: Danny Caes<br /> <br /> | [http://www.lpod.org/coppermine/thumbnails.php?album=search&type=full&search=Pytheas LPOD Photo Gallery] [http://www.lpi.usra.edu/resources/lunar_orbiter/bin/srch_nam.shtml?Pytheas%7C0 Lunar Orbiter Images] [http://www.lpi.usra.edu/resources/apollo/search/feature/?feature=Pytheas Apollo Images]<br /> '''- Pytheas Beta''', the hillock at 20° North/ 24° West which was once called '''''Mount Dyson''''' by Percy Wilkins and Patrick Moore, was captured on several frames of Apollo 17's orbital panoramic ''ITEK''-camera. One of them, frame [http://www.lpi.usra.edu/resources/apollo/frame/?AS17-P-3090 AS17-P-3090], shows '''''Mount Dyson''''' ('''Pytheas Beta''') pretty well.<br /> - Is '''Pytheas G''' a craterlet with central peak? See [http://www.lpi.usra.edu/resources/apollo/frame/?AS17-P-3074 AS17-P-3074].<br /> Additional research orbital Apollo 17 photography: Danny Caes<br /> <br /> | ||
==Maps== | ==Maps== | ||
| − | ''([http://the-moon. | + | ''([http://the-moon.us/wiki/LAC%20zone LAC zone] 40D2)'' [http://www.lpi.usra.edu/resources/mapcatalog/LAC/lac40/ LAC map] [http://www.lpi.usra.edu/resources/mapcatalog/usgs/I462/ Geologic map] [http://www.lpi.usra.edu/resources/mapcatalog/LTO/lto40d2_1/ LTO map]<br /> <br /> |
==Description== | ==Description== | ||
<br /> | <br /> | ||
==Description: Elger== | ==Description: Elger== | ||
| − | ''([http://the-moon. | + | ''([http://the-moon.us/wiki/IAU%20directions IAU Directions])'' PYTHEAS.--A small rhomboidal-shaped ring-plain, 12 miles in diameter, standing in an isolated position on the [http://the-moon.us/wiki/Mare%20Imbrium Mare Imbrium] between [http://the-moon.us/wiki/Lambert Lambert] and [http://the-moon.us/wiki/Gay-Lussac Gay-Lussac]. Its bright walls, rising about 2,500 feet above the Mare, are much terraced within, especially on the W. There is a bright little crater on the N. outer slope, with a short serpentine ridge running up to it from the region S. of [http://the-moon.us/wiki/Lambert Lambert], and another winding ridge extending from the S. wall to the W. of two conspicuous craters, standing about midway between [http://the-moon.us/wiki/Pytheas Pytheas] and [http://the-moon.us/wiki/Gay-Lussac Gay-Lussac]. The former bears a great resemblance to the ridge N. of [http://the-moon.us/wiki/M%C3%A4dler Madler], and, like this, appears to traverse the N. border. The interior of Pytheas, which is depressed more than 2,000 feet below the Mare, includes a brilliant central peak.<br /> <br /> |
==Description: Wikipedia== | ==Description: Wikipedia== | ||
[http://en.wikipedia.org/wiki/Pytheas_%28crater%29 Pytheas]<br /> <br /> | [http://en.wikipedia.org/wiki/Pytheas_%28crater%29 Pytheas]<br /> <br /> | ||
==Additional Information== | ==Additional Information== | ||
| − | * Depth data from [http://the-moon. | + | * Depth data from [http://the-moon.us/wiki/Kurt%20Fisher%20Crater%20Depths Kurt Fisher database] |
** Pike, 1976: 2.54 km | ** Pike, 1976: 2.54 km | ||
** Arthur, 1974: 2.54 km | ** Arthur, 1974: 2.54 km | ||
| Line 25: | Line 24: | ||
** Viscardy, 1985: 2.53 km | ** Viscardy, 1985: 2.53 km | ||
** Cherrington, 1969: 2.16 km | ** Cherrington, 1969: 2.16 km | ||
| − | * The longest shadow in LO-IV-126H indicates a height difference of slightly over 2600 m. <span class="membersnap">- | + | * The longest shadow in LO-IV-126H indicates a height difference of slightly over 2600 m. <span class="membersnap">- Jim Mosher</span> |
* Mapped as Copernican because has rays but some parts of rays are mature and others are not – strange result being investigated. (Hawke et al: Composition and origin of Copernican Rays… Mappers Conference 2005) | * Mapped as Copernican because has rays but some parts of rays are mature and others are not – strange result being investigated. (Hawke et al: Composition and origin of Copernican Rays… Mappers Conference 2005) | ||
| − | * Thermal anomaly crater, implying youthful age - [http://the-moon. | + | * Thermal anomaly crater, implying youthful age - [http://the-moon.us/wiki/Moore%20et%20al%2C%201980 Moore et al, 1980] |
* A weird shaped depression near '''Pytheas G''' (slightly southeast of Pytheas G) is mentioned in APOLLO OVER THE MOON: A VIEW FROM ORBIT, Chapter 7: Unusual Features ([http://www.hq.nasa.gov/office/pao/History/SP-362/ch7.2.htm Part 2]), Figure 243. Detection of this weird depression's exact location: Danny Caes. | * A weird shaped depression near '''Pytheas G''' (slightly southeast of Pytheas G) is mentioned in APOLLO OVER THE MOON: A VIEW FROM ORBIT, Chapter 7: Unusual Features ([http://www.hq.nasa.gov/office/pao/History/SP-362/ch7.2.htm Part 2]), Figure 243. Detection of this weird depression's exact location: Danny Caes. | ||
| − | * Included in [http://the-moon. | + | * Included in [http://the-moon.us/wiki/ALPO%20list%20of%20bright%20ray%20craters ALPO list of bright ray craters] |
| − | * Included on the [http://the-moon. | + | * Included on the [http://the-moon.us/wiki/ALPO%20list%20of%20banded%20craters ALPO list of banded craters] |
* Oblique impact crater with widening of cross-range direction suggest impact angle of 15° ([http://www.lpi.usra.edu/meetings/lpsc2008/pdf/1691.pdf Forsberg, Herrick & Bussey], 2008). | * Oblique impact crater with widening of cross-range direction suggest impact angle of 15° ([http://www.lpi.usra.edu/meetings/lpsc2008/pdf/1691.pdf Forsberg, Herrick & Bussey], 2008). | ||
| − | * TSI = 25, CPI = 5, FI = 15; MI =55 [http://the-moon. | + | * TSI = 25, CPI = 5, FI = 15; MI =55 [http://the-moon.us/wiki/Smith%20and%20Sanchez%2C%201973 Smith and Sanchez, 1973] |
<br /> | <br /> | ||
==Nomenclature== | ==Nomenclature== | ||
* Named for [http://en.wikipedia.org/wiki/Pytheas Pytheas] (ca. 380 – ca. 310 BC), a Greek merchant, geographer and explorer from the Greek colony Massilia (today Marseille, France). He made a voyage of exploration to northwestern Europe around 325 BC. He probably travelled around a considerable part of Great Britain, circumnavigating it between 330 and 320 BC. Pytheas is the first person on record to describe the Midnight Sun, the aurora and polar ice, and the first to mention the name Britannia and Germanic tribes. | * Named for [http://en.wikipedia.org/wiki/Pytheas Pytheas] (ca. 380 – ca. 310 BC), a Greek merchant, geographer and explorer from the Greek colony Massilia (today Marseille, France). He made a voyage of exploration to northwestern Europe around 325 BC. He probably travelled around a considerable part of Great Britain, circumnavigating it between 330 and 320 BC. Pytheas is the first person on record to describe the Midnight Sun, the aurora and polar ice, and the first to mention the name Britannia and Germanic tribes. | ||
| − | * '''Pytheas Beta''', a small solitary hill west-southwest of Pytheas itself, was called '''Mount Dyson''' by [http://the-moon. | + | * '''Pytheas Beta''', a small solitary hill west-southwest of Pytheas itself, was called '''Mount Dyson''' by [http://the-moon.us/wiki/Wilkins%20and%20Moore Wilkins and Moore], but the I.A.U. did not accept that name. The name '''Dyson''' was eventually used for a [http://the-moon.us/wiki/Dyson farside crater]. |
* '''''Tiny white island'''''. A nickname from Danny Caes for the officially unnamed hillock (or "''island''") east-southeast of '''Pytheas K'''. This tiny hillock shows a high-albedo spot at its northern slope. Its pinpoint location is LAT''':''' 19.00 / LON''':''' -14.45 (see the ''LROC ACT-REACT QUICK MAP'' for several NAC close ups of it). | * '''''Tiny white island'''''. A nickname from Danny Caes for the officially unnamed hillock (or "''island''") east-southeast of '''Pytheas K'''. This tiny hillock shows a high-albedo spot at its northern slope. Its pinpoint location is LAT''':''' 19.00 / LON''':''' -14.45 (see the ''LROC ACT-REACT QUICK MAP'' for several NAC close ups of it). | ||
<br /> | <br /> | ||
==LPOD Articles== | ==LPOD Articles== | ||
| − | [http:// | + | [http://www2.lpod.org/wiki/June_23,_2006 Rays & Pitts] [http://www2.lpod.org/wiki/March_2,_2006 Mare Layering]<br /> <br /> |
==Bibliography== | ==Bibliography== | ||
| − | * Dark streaks on [http://the-moon. | + | * Dark streaks on [http://the-moon.us/wiki/Pytheas Pytheas]'s southern inner slopes: |
** APOLLO OVER THE MOON; A VIEW FROM ORBIT, Chapter 5: Craters ([http://www.hq.nasa.gov/office/pao/History/SP-362/ch5.3.htm Part 3]); Figure 125, ([http://www.hq.nasa.gov/office/pao/History/SP-362/ch5.4.htm Part 4]); Figure 146. | ** APOLLO OVER THE MOON; A VIEW FROM ORBIT, Chapter 5: Craters ([http://www.hq.nasa.gov/office/pao/History/SP-362/ch5.3.htm Part 3]); Figure 125, ([http://www.hq.nasa.gov/office/pao/History/SP-362/ch5.4.htm Part 4]); Figure 146. | ||
<br /> | <br /> | ||
---- | ---- | ||
| − | + | </div> | |
Latest revision as of 03:10, 16 April 2018
Contents
Pytheas
|
Lat: 20.5°N, Long: 20.6°W, Diam: 20 km, Depth: 2.54 km, Rükl: 20, Copernican |
LO-IV-126H The 5-km diameter crater above Pytheas is Pytheas D.
Images
LPOD Photo Gallery Lunar Orbiter Images Apollo Images
- Pytheas Beta, the hillock at 20° North/ 24° West which was once called Mount Dyson by Percy Wilkins and Patrick Moore, was captured on several frames of Apollo 17's orbital panoramic ITEK-camera. One of them, frame AS17-P-3090, shows Mount Dyson (Pytheas Beta) pretty well.
- Is Pytheas G a craterlet with central peak? See AS17-P-3074.
Additional research orbital Apollo 17 photography: Danny Caes
Maps
(LAC zone 40D2) LAC map Geologic map LTO map
Description
Description: Elger
(IAU Directions) PYTHEAS.--A small rhomboidal-shaped ring-plain, 12 miles in diameter, standing in an isolated position on the Mare Imbrium between Lambert and Gay-Lussac. Its bright walls, rising about 2,500 feet above the Mare, are much terraced within, especially on the W. There is a bright little crater on the N. outer slope, with a short serpentine ridge running up to it from the region S. of Lambert, and another winding ridge extending from the S. wall to the W. of two conspicuous craters, standing about midway between Pytheas and Gay-Lussac. The former bears a great resemblance to the ridge N. of Madler, and, like this, appears to traverse the N. border. The interior of Pytheas, which is depressed more than 2,000 feet below the Mare, includes a brilliant central peak.
Description: Wikipedia
Additional Information
- Depth data from Kurt Fisher database
- Pike, 1976: 2.54 km
- Arthur, 1974: 2.54 km
- Westfall, 2000: 2.54 km
- Viscardy, 1985: 2.53 km
- Cherrington, 1969: 2.16 km
- The longest shadow in LO-IV-126H indicates a height difference of slightly over 2600 m. - Jim Mosher
- Mapped as Copernican because has rays but some parts of rays are mature and others are not – strange result being investigated. (Hawke et al: Composition and origin of Copernican Rays… Mappers Conference 2005)
- Thermal anomaly crater, implying youthful age - Moore et al, 1980
- A weird shaped depression near Pytheas G (slightly southeast of Pytheas G) is mentioned in APOLLO OVER THE MOON: A VIEW FROM ORBIT, Chapter 7: Unusual Features (Part 2), Figure 243. Detection of this weird depression's exact location: Danny Caes.
- Included in ALPO list of bright ray craters
- Included on the ALPO list of banded craters
- Oblique impact crater with widening of cross-range direction suggest impact angle of 15° (Forsberg, Herrick & Bussey, 2008).
- TSI = 25, CPI = 5, FI = 15; MI =55 Smith and Sanchez, 1973
Nomenclature
- Named for Pytheas (ca. 380 – ca. 310 BC), a Greek merchant, geographer and explorer from the Greek colony Massilia (today Marseille, France). He made a voyage of exploration to northwestern Europe around 325 BC. He probably travelled around a considerable part of Great Britain, circumnavigating it between 330 and 320 BC. Pytheas is the first person on record to describe the Midnight Sun, the aurora and polar ice, and the first to mention the name Britannia and Germanic tribes.
- Pytheas Beta, a small solitary hill west-southwest of Pytheas itself, was called Mount Dyson by Wilkins and Moore, but the I.A.U. did not accept that name. The name Dyson was eventually used for a farside crater.
- Tiny white island. A nickname from Danny Caes for the officially unnamed hillock (or "island") east-southeast of Pytheas K. This tiny hillock shows a high-albedo spot at its northern slope. Its pinpoint location is LAT: 19.00 / LON: -14.45 (see the LROC ACT-REACT QUICK MAP for several NAC close ups of it).
LPOD Articles
Bibliography
- Dark streaks on Pytheas's southern inner slopes:
