Difference between revisions of "Messala"
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| − | + | [http://www.lpod.org/coppermine/displayimage.php?pid=3519&fullsize=1 [[Image:Normal_Messala_LO-IV-191H_LTVT.JPG|external image normal_Messala_LO-IV-191H_LTVT.JPG]]]<br /> ''[http://lpod.org/coppermine/displayimage.php?pos=-3519 LO-IV-191H]''<br /> <br /> | |
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==Images== | ==Images== | ||
[http://www.lpod.org/coppermine/thumbnails.php?album=search&type=full&search=Messala LPOD Photo Gallery] [http://www.lpi.usra.edu/resources/lunar_orbiter/bin/srch_nam.shtml?Messala%7C0 Lunar Orbiter Images] [http://www.lpi.usra.edu/resources/apollo/search/feature/?feature=Messala Apollo Images]<br /> <br /> | [http://www.lpod.org/coppermine/thumbnails.php?album=search&type=full&search=Messala LPOD Photo Gallery] [http://www.lpi.usra.edu/resources/lunar_orbiter/bin/srch_nam.shtml?Messala%7C0 Lunar Orbiter Images] [http://www.lpi.usra.edu/resources/apollo/search/feature/?feature=Messala Apollo Images]<br /> <br /> | ||
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==Description: Elger== | ==Description: Elger== | ||
| − | ''([[IAU% | + | ''([[IAU%20directions|IAU Directions]])'' MESSALA.--This fine walled-plain, nearly 70 miles in diameter, is, with its surroundings, an especially interesting object when observed under a low angle of illumination. Its complex border, though roughly circular, displays many irregularities in outline, due mainly to rows of depressions. The best view of it is obtained when the E. wall is on the evening terminator. At this phase, if libration is favourable, the manifold details of its very uneven and apparently convex floor are best seen. On the S.E. side is a group of large craters associated with a number of low hills, of which Schmidt shows five; but I have seen many more, together with several ridges between them and the W. wall. I noted also a cleft, or it may be a narrow valley, running from the foot of the N.E. wall towards the centre. On the floor, abutting on the N.W. border, is a semicircular ridge of considerable height, and beyond the border on the N.W. there is another curved ridge, completing the circle, the wall forming the diameter. This formation is clearly of more ancient date than Messala, as the N.W. wall of the latter has cut through it. Where Messala joins [[Schumacher|Schumacher]] there is a break in the border, occupied by three deep depressions.<br /> <br /> |
==Description: Wikipedia== | ==Description: Wikipedia== | ||
[http://en.wikipedia.org/wiki/Messala_(crater) Messala]<br /> <br /> | [http://en.wikipedia.org/wiki/Messala_(crater) Messala]<br /> <br /> | ||
==Additional Information== | ==Additional Information== | ||
| − | * Depth data from [[Kurt%20Fisher% | + | * Depth data from [[Kurt%20Fisher%20Crater%20Depths|Kurt Fisher database]] |
** Westfall, 2000: 2.07 km | ** Westfall, 2000: 2.07 km | ||
** Cherrington, 1969: 2.71 km | ** Cherrington, 1969: 2.71 km | ||
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==Terminator-related observations of MESSALA from Ivo Demeulenaere (Flemish connoisseur of moon-observing)== | ==Terminator-related observations of MESSALA from Ivo Demeulenaere (Flemish connoisseur of moon-observing)== | ||
| − | [https://www.facebook.com/notes/astro-outreach-toolbox-blog/messala-sunrise-alert-2017-march-30/294113407675352 Special MESSALA page from Ivo Demeulenaere]<br /> Thanks Ivo !!! <span class="membersnap">- | + | [https://www.facebook.com/notes/astro-outreach-toolbox-blog/messala-sunrise-alert-2017-march-30/294113407675352 Special MESSALA page from Ivo Demeulenaere]<br /> Thanks Ivo !!! <span class="membersnap">- DannyCaes <small>Mar 20, 2017</small></span><br /> <br /> |
==Nomenclature== | ==Nomenclature== | ||
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Latest revision as of 02:04, 16 April 2018
Contents
Messala
| Lat: 39.2°N, Long: 60.5°E, Diam: 125 km, Depth: 2.07 km, Rükl: 16, pre-Nectarian |
Images
LPOD Photo Gallery Lunar Orbiter Images Apollo Images
Maps
(LAC zone 28D1) USGS Digital Atlas PDF
Description
Description: Elger
(IAU Directions) MESSALA.--This fine walled-plain, nearly 70 miles in diameter, is, with its surroundings, an especially interesting object when observed under a low angle of illumination. Its complex border, though roughly circular, displays many irregularities in outline, due mainly to rows of depressions. The best view of it is obtained when the E. wall is on the evening terminator. At this phase, if libration is favourable, the manifold details of its very uneven and apparently convex floor are best seen. On the S.E. side is a group of large craters associated with a number of low hills, of which Schmidt shows five; but I have seen many more, together with several ridges between them and the W. wall. I noted also a cleft, or it may be a narrow valley, running from the foot of the N.E. wall towards the centre. On the floor, abutting on the N.W. border, is a semicircular ridge of considerable height, and beyond the border on the N.W. there is another curved ridge, completing the circle, the wall forming the diameter. This formation is clearly of more ancient date than Messala, as the N.W. wall of the latter has cut through it. Where Messala joins Schumacher there is a break in the border, occupied by three deep depressions.
Description: Wikipedia
Additional Information
- Depth data from Kurt Fisher database
- Westfall, 2000: 2.07 km
- Cherrington, 1969: 2.71 km
- Satellite crater Messala A is on the ALPO list of banded craters
Special MESSALA page from Ivo Demeulenaere
Thanks Ivo !!! - DannyCaes Mar 20, 2017
Nomenclature
- Named for Masha'allah ibn Athari (c.740-d.815 AD), an eighth century Persian Jewish astronomer from the city of Basra (now located in modern day Iraq) who became the leading astrologer of the late 8th century. His name is usually Latinized as Messala or Messahalla.
- This name was part of the original IAU nomenclature of Named Lunar Formations (1935).
- According to Whitaker (p. 213), the name was introduced by Riccioli in the form Messala Arabs., but the "Arabs." part was later dropped (by whom is not explained). Johann Schröter called in Messhala in Plate VIIof his book.
LPOD Articles
A Rarely Seen Mess
Unknown Volcanic Center
Bibliography
