Nectaris Basin

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Nectaris Basin

(nek-ta -riss) A large multiringed basin on the southeastern nearside of the Moon. It was formed about 3.9 billion years ago, and was later flooded with lava to produce Mare Nectaris (Sea of Nectar). See also Nectarian System.
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Observe during full Moon, and you'll see that most of the continuous Tycho rays, such as the one that reaches Mare Nectaris to its northwest, extend only 1,000 to 1,500 km--well short of Bessel's distance.
Here in the southern hemisphere I see an Easter Bunny on the Moon, (thanks to a delightful book, Exploring the Moon, by Steve Massey of Australia), with Mare Nectaris and Mare Fecunditatis as the ears, and Mare Crisium as the Egg.
The prominent crater trio Theophilus, Cyrillus, and Catharina lived in Alexandria, which got them seaside locations on Mare Nectaris.
Nearby Eratosthenes is one, as are Bullialdus in Mare Nubium, Langrenus on the eastern edge of Mare Fecunditatis, Theophilus near Mare Nectaris, and Tycho down in the southern highlands.
8 First Quarter Moon First Quarter lunar features Craters 1 Piccolomini 2 Stevinus 3 Fracastorius 4 Theophilus 5 Langrenus * 6 Delambre 7 Macrobius 8 Posidonius 9 Atlas 10 Hercules 11 Burg 12 Eudoxus * 13 Aristoteles * 14 Aristillus 15 Manilius * 16 Julius Caesar 17 Horrocks 18 Hipparchus 19 Albategnius 20 Werner 21 Aliacensis 22 Stofler 23 Maurolycus Mountains TM Taurus CM Caucasus Other features AV Alpine Valley LM Lacus Mortis LS Lacus Somniorum MC Mare Crisium MF Mare Frigoris Mfe Mare Fecunditatis MN Mare Nectaris MS Mare Serenitatis MT Mare Tranquillitatis MV Mare Vaporum RV Rheita Valley * These craters stand out well during a lunar eclipse and can be used to note the progress of the umbra across the lunar disk.
Theophilus is a 60-mile-wide ring that borders the shore of Mare Nectaris (Sea of Nectar).
Another giant impact-generated fault scarp is visible as the inward face of the Rupes Altai, a mountain arc that rims the Nectaris basin and lies about 200 km southwest of Mare Nectaris itself.
Nearby Eratosthenes is one, as is Bullialdus in Mare Nubium, Langrenus on the eastern edge of Mare Fecunditatis, Theophilus near Mare Nectaris, and Tycho down in the southern highlands.
Massive impact basins such as the ones containing Mare Imbrium and Mare Nectaris are easily recognized due to their roughly circular expanses of smooth lava and surrounding mountainous rim arcs.
It's a 100-kilometer-wide (62-mile) ring bordering the northwestern shore of Mare Nectaris (Sea of Nectar) with multiple central peaks rising to 1,400 meters (4,600 feet).
The edge of Mare Nectaris is an inner ring, visible as a low scarp from Fracastorius crater bending around toward Bohnenberger on the east.
8] First Quarter Moon First quarter lunar features Craters 1 Piccolomini 2 Stevinus 3 Fracastorius 4 Theophilus 5 Langrenus * 6 Delambre 7 Macrobius 8 Posidonius 9 Atlas 10 Hercules 11 Burg 12 Eudoxus * 13 Aristoteles * 14 Aristillus 15 Manilius * 16 Julius Caesar 17 Horrocks 18 Hipparchus 19 Albategnius 20 Werner 21 Aliacensis 22 Stotler 23 Maurolycus Mountains TM Taurus CM Caucasus Other features AV Alpine Valley LM Lacus Mortis LS Lacus Somniorum MC Mare Crisium MF Mare Frigoris MFe Mare Fecunditatis MN Mare Nectaris MS Mare Serenitatis MT Mare Tranquillitatis MV Mare Vaporum RV Rheita Valley * These craters stand out well during a lunar eclipse and can be used to note the progress of the umbra across the lunar disk.