IWLOP #029 - Fracastorius
Since this crater intersects the Nectarian Basin wall, it formed after the Nectarian Basin impact but before the area was flooded with lava.
Location: 21.2 S 33.0 E Origin: Impact Size: 58 km Rukl: 58 Type: Complex Crater (CC)
Objects: Fracastorius, Craters L & M
Others Identified: Fracastorius D, N, W, X, Y; Mare Nectaris
Moon Phase: 1st Quarter (52.9% illumination)
Time: 8:03 PM ADT
Equipment: 10" Meade SCT, 4.7 mm
Transparency: Very Good (4)
Seeing: Very Good (4)
R1: Oval/Almond shape to the crater on south shore of Mare Nectaris. North wall virtually non-existent with similar colour to the Mare.
C1: Crater M located near the centre line in lower half of the crater. Crater L was located in the upper half just off centre. The rille seemed to pass just north of crater M, extending east towards a small crater and ending on the crater wall near crater D.
NOTE: The crater floor north of the rille into Mare Nectaris was darker than the floor south of the rille. There was also a bright line (ejecta?) that ran NE to SW, especially noticeable below crater D.