Letronne is a possible upper-Imbrium Age crater, whereas Flamsteed is Eratosthenian in age.
Origin: Impact Diameter: 119 km, 21 km Rukl: 40 Type: C1
Objects: Letronne, Billy, Hansteen, Flamsteed, Flamsteed P, Dorsa Rubey, Surveyor 1 landing
Othe Objects Identified: Winthrop, Letronne A, Letronne B, Letronne F, Flamsteed D and K
Location: Home
Date: 2024-06-15
Time: 11:09 PM ADT
Equipment: 10" Meade SCT
Eyepiece: 10mm eyepiece
Magnification: x250
SQM: not recorded
Temperature: not recorded
Seeing: Very Good (2)
Transparency: Good (3)
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RI: Letronne was mountainous in its lower half. Its northern rim flooded by Oceanus Procellarum. There were peaks in the centre. Crater Winthrop had impacted the west wall. Crater B appeared to have some ejecta. C1: The Surveyor 1 landing site was NE of Flamsteed in Flamsteed P (above small craters D and K). The Dorsa Rubey seems to begin in Letronne then goes NW past Letronne A and ends near Letronne B. |