Geological Chronicle
Baillaud is located near the north limb of the Moon, with the irregular Meton formation to the southwest and Petermann further to the east. Viewed along the line of sight from Earth, the crater appears oblong because of foreshortening. The feature lies in the Meton quadrangle, cataloged as LAC-4.
On the lunar geologic timescale, this formation dates to the Late Imbrian period, measuring 89.44 km across. Impacts have eroded and worn the rim into a surrounding hilly ridge that bulges outward to the west. Euctemon intrudes into the rim to the northwest, while at the south end a gap connects to a mare basalt covered surface to the south.
Past mare basalt flows submerged the interior of Baillaud, leaving a flat, smooth surface that lacks a central peak or significant ridges. That floor is marked only by many craterlets and the prominent satellite crater Baillaud E in the western half.