Boss is a 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...

 impact 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 is located along the northeast rim 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...

's near side. Due to its location, the crater is viewed from the side by observers on the Earth

Earth

Earth is the third planet from the Sun, and the densest and fifth-largest of the eight planets in the Solar System. It is also the largest of the Solar System's four terrestrial planets...

, and its visibility is subject to libration

Libration

In astronomy, libration is an oscillating motion of orbiting bodies relative to each other, notably including the motion of the Moon relative to Earth, or of Trojan asteroids relative to planets.-Lunar libration:...

 effects.

This formation has not been significantly eroded by impacts, and it retains a well-defined outer rim that is not overlain by smaller craters of note. The inner wall is wide and has a terraced surface. The interior floor has a low central peak that is offset slightly to the north from the mid-point.

The closest named craters are Vashakidze

Vashakidze (crater)

Vashakidze is a lunar impact crater that is located on the Moon's far side, just beyond the northeastern limb. This area of the surface is not completely hidden from the Earth, however, as suitable combinations of libration and sunlight will bring it into view. The southeastern rim of this crater...

 to the southeast on the far side of the Moon, and the heavily eroded Riemann

Riemann (crater)

Riemann is a lunar crater that is located near the northeastern limb of the Moon, and can just be observed edge-on when libration effects bring it into sight. It lies to the east-northeast of the large walled plain Gauss. To the southeast, beyond sight on the far side, is the crater Vestine.This is...

 to the south. Further to the southwest is the prominent crater Gauss

Gauss (crater)

Gauss is a large lunar crater, named after Carl Friedrich Gauss, that is located near the northeastern limb of the Moon's near side. It belongs to a category of lunar formations called a walled plain, meaning that it has a diameter of at least 110 kilometers, with a somewhat sunken floor and little...

, and to the north-northwest is the Mare Humboldtianum

Mare Humboldtianum

Mare Humboldtianum is a lunar mare located within the Humboldtianum basin, just to the east of Mare Frigoris. It is located along the northeastern limb of the Moon, and continues on to the far side...

.

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 Boss.

Boss	Latitude	Longitude	Diameter
A	52.3° N	80.3° E	27 km
B	52.0° N	77.1° E	12 km
C	52.2° N	76.4° E	21 km
D	44.9° N	87.4° E	15 km
F	54.5° N	86.8° E	36 km
K	49.6° N	80.7° E	19 km
L	50.9° N	82.3° E	40 km
M	52.0° N	83.8° E	13 km
N	52.2° N	85.2° E	16 km