Backlund is a worn lunar

Moon

The Moon is Earth's only known natural satellite,There are a number of near-Earth asteroids including 3753 Cruithne that are co-orbital with Earth: their orbits bring them close to Earth for periods of time but then alter in the long term . These are quasi-satellites and not true moons. For more...

 crater

Impact crater

In the broadest sense, the term impact crater can be applied to any depression, natural or manmade, resulting from the high velocity impact of a projectile with a larger body...

 that lies on the far side of the Moon

Moon

The Moon is Earth's only known natural satellite,There are a number of near-Earth asteroids including 3753 Cruithne that are co-orbital with Earth: their orbits bring them close to Earth for periods of time but then alter in the long term . These are quasi-satellites and not true moons. For more...

, beyond the eastern limb. It lies astride the southern rim of the walled plain Pasteur

Pasteur (lunar 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...

, to the west of the crater Hilbert

Hilbert (crater)

Hilbert is a lunar crater that is located on the far side of the Moon, just past the southeast limb. It lies just beyond the region of the surface that is occasionally brought into view due to libration, and so this feature cannot be observed directly from the Earth.The crater is attached to the...

. Further to the west-southwest is Sklodowska

Sklodowska (lunar crater)

Sklodowska is a large lunar impact crater that is located on the far side of the Moon. It lies just past the southeastern limb, and can sometimes be viewed from Earth under favorable conditions of libration and illumination...

. The north and south ends of Backlund are more worn and eroded than the intervening stretches. The interior floor is relatively flat, with the usual accompaniment of tiny impact craters marking the surface.

Satellite craters

By convention these features are identified on lunar maps by placing the letter on the side of the crater mid-point that is closest to Backlund.

Backlund	Latitude	Longitude	Diameter
E	15.5° S	105.3° E	15 km
L	18.2° S	103.5° E	56 km
N	17.8° S	102.8° E	18 km
P	18.9° S	102.0° E	27 km
R	16.8° S	101.5° E	23 km
S	16.8° S	100.6° E	21 km