Billy |
Billy is an ancient impact crater, 46 kilometres in diameter, with a rim rising to 1300 metres above its flat floor. The floor of Billy has been flooded by basaltic lava with a low albedo, meaning it leaves a dark surface.
10 Days old -- waxing gibbous
Davy
Pitatus
BillyFra Mauro
Clavius craterlets
Hippalus
Herschel, J.
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