Graff

Lat: 42.4°S, Long: 88.6°W, Diam: 36 km, Depth: 4.97 km, Rükl: 61

Images

Depth data from Kurt Fisher database
- Westfall, 2000: 4.97 km
From the shadows in LO-IV-194H, the east rim of Graff is 3000-3700 m above the floor. - Jim Mosher
TSI = 20, CPI = 5, FI = 20; MI =45 Smith and Hartnell, 1973

Named for Kasimir Romuald Graff (1878-1950), a Polish-German astronomer.
Whitaker does not explain the origin of this name, which the on-line IAU Planetary Gazetteer lists as having been approved in 1970. Although Graff appears in the cumulative list of approved names in IAU Transactions XVB, it is not clear precisely when and where it was approved. - Jim Mosher
In certain catalogs of open star clusters, the cluster known as IC 4756 in the constellation Serpens Cauda is called (or catalogued as) Graff (or: Graff 1, Graff's Cluster). Is this name related to the astronomer Kasimir Romuald Graff? Did he investigated this cluster? - DannyCaes Feb 15, 2014
And indeed, the name Kasimir Graff is mentioned in the Italian Wikipedia page for cluster IC 4756. - DannyCaes Feb 15, 2014