Tags: Crater.
Pasteur is a large lunar crater belonging to the category termed a walled plain. It lies on the far side of the Moon as seen from the Earth just beyond the eastern limb. The vicinity of this crater is occasionally brought into view from Earth due to librations although not much detail can be seen.Lying along the southern rim of Pasteur is the smaller crater Backlund. Just to the southeast is Hilbert another walled plain nearly two-thirds the diameter of Pasteur.