Circular formation. Forms a remarkable couple with Cavalerius.
Pretty steep slopes supporting Cavalerius to the North Lohrmann
to the South and many craterlets to the East and to the West.
Few high walls supporting Hevelius H F & B to the West and Hevelius
C G & E to the North-East.
Very large flat floor supporting Hevelius A to the North. Small
central mountain. Contains Rimae Hevelius.
Dimension: 109x109Km / 64x64Mi
Height/Wide ratio: 0.0189
Interest : Exceptional formation
Observation period: 6 days after First Quarter or 5 days after Last
Minimal Instrument: 10x binoculars