Geminus

D=83 km
Center: 34°N, 57°E

Count Area: 1005 km^2
Observed Density (@ 1km): 2900 ± 1700
Age: 3.2 ± 0.4 (+sec: 3.6)
Stoffler epoch: Eratosthenian/Late Imbrian
Fit Density (@ 1 km): 4200 ± 700
PF fit: good, poor statistics, young, secondaries

Age calculation notes:
? - poor statistics (SM).
Fit is good (error bars are large) - use as is; adding OSs reduces goodness of fit and raises age (MRK).

USGS geology: 
All mapped as Eratosthenian crater material.

Wilhelms: 
Eratosthenian

Floor material: 
Best guess is original, but does look softened. Loose?

Geology Observations: 
Ejecta blanket visible, but no rays observed in WAC. Central peak very small. Floor has some small hills. A few collapses around wall edges (avoided). A few secondary clusters/chains observed, but still small (up to ~ 1.3 km).

SFD Observations: 
Dominated by class 1, 2, and 3. No 4s larger than 700m. Matches MPF. Steeper distribution. No shallow "right ear". Slope(Diff)=-5.4 ± 1.8

Discussion notes: 
no issues

Last Edited by MRK 12/12/2012