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・ Pontailler-sur-Saône
・ Pontaix
・ Pontal
・ Pontal do Araguaia
・ Pontal do Paraná
・ Pontal River
・ Pontalba (opera)
・ Pontalba Buildings
・ Pontalete
・ Pontalina
・ Pontalinda
・ Pontamafrey-Montpascal
・ Pontamau
・ Pontano Chapel
・ Pontanus
Pontanus (crater)
・ Pontardawe
・ Pontardawe (electoral ward)
・ Pontardawe Arts Centre
・ Pontardawe Festival
・ Pontardawe railway station
・ Pontardawe RFC
・ Pontardawe television relay station
・ Pontardawe Tinplate Works
・ Pontardawe Town F.C.
・ Pontarddulais
・ Pontarddulais (electoral ward)
・ Pontarddulais Comprehensive School
・ Pontarddulais Cricket Club
・ Pontarddulais Male Choir


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Pontanus (crater) : ウィキペディア英語版
Pontanus (crater)
:''For people with this name, see Pontanus (disambiguation).''
Pontanus is a lunar crater that is located in the southern highlands of the Moon's near side. It lies approximately mid-way between the craters Sacrobosco to the north-northeast and Gemma Frisius to the south-southwest. It is 58 kilometers in diameter and 2,120 meters deep.〔''Autostar Suite Astronomer Edition''. CD-ROM. Meade, April 2006.〕
The rim of this crater has been heavily worn by subsequent impacts, leaving a roughly circular, uneven slope about the interior. There is an outward protrusion in the rim to the south. The rim and inner wall to the north is less prominent, and is incised along the inner edge. The satellite crater Pontanus V is attached to the west-southwestern side. The interior floor is relatively uneven, particularly in the northern half, but is not marked by any significant craters.〔Moore, Patrick (2001). ''On the Moon''. Sterling Publishing Co.. ISBN 0-304-35469-4.〕 The crater is from the Pre-Nectarian period, 4.55 to 3.92 billion years ago.〔
The crater is named after the 15th-century Italian poet Giovanni Pontano.〔
==Satellite craters==
By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Pontanus.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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