An ancient impact basin badly degraded by cratering.
Origin: Impact and Volcanic Size: 900 km Rukl: 76, 69 Type: Basin - Mare
Objects: Mare Australe, Oken
Others Identified: Abel, Brisbane, Brisbane 2, Gill, Hanno, Harlen, Lyot, Lyot H, Marinus, Peirescius, Pontécoulant
Date: 2019-03-20
Location: Home
Time: 10:41 PM ADT
Equipment: 6” Sky-Watcher Dobsonian
Eyepiece: Antares Plössl 15mm
Magnification: x80
Seeing: Very good (4)
Transparency: Very good (4)
SQM: 18.08
Temp: -2º C
No wind. No clouds. Full Moon at 99.% illumination. Very bright.
C1: Most of the E and Se limbs were favourably librated to expose the Mare and several craters. Oken was quite dark compared to the other craters in the Mare.
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