Newcomb 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 in the rugged Montes Taurus

Montes Taurus

Montes Taurus is a rugged, jumbled mountainous region on the Moon. These peaks are located on a highland region to the east of the Mare Serenitatis, in the northeastern quadrant of the Moon's near side. The selenographic coordinates of this range are 28.4° N, 41.1° E, and they have a diameter of...

 mountain range, to the east of the Mare Serenitatis

Mare Serenitatis

Mare Serenitatis is a lunar mare that sits just to the east of Mare Imbrium on the Moon.It is located within the Serenitatis basin, which is of the Nectarian epoch. The material surrounding the mare is of the Lower Imbrian epoch, while the mare material is of the Upper Imbrian epoch...

. It lies to the northeast of the prominent crater Römer

Römer (crater)

Römer is a lunar impact crater that is located to the north of the Sinus Amoris in the northeast section of the Moon. It lies in the southwestern part of the mountainous region named the Montes Taurus. To the west-northwest is the crater-bay Le Monnier, on the eastern edge of Mare Serenitatis.The...

, and north-northwest of Macrobius

Macrobius (crater)

Macrobius is a prominent lunar impact crater located to the northwest of the Mare Crisium. It lies on the southeast edge of the Lacus Bonitatis, a small lunar mare. The somewhat smaller crater Tisserand lies just to the east....

.

This crater has a sharp-edged and somewhat irregular rim that appears polygon

Polygon

In geometry a polygon is a flat shape consisting of straight lines that are joined to form a closed chain orcircuit.A polygon is traditionally a plane figure that is bounded by a closed path, composed of a finite sequence of straight line segments...

al more than circular. There are terraces along the inner sides, with some slumping along the northern and western inner edge. The south-southwestern part of the rim is overlaid by the smaller crater Newcomb A. The interior floor is uneven, particularly near the rim of Newcomb A. Just to the south-southeast of the crater is the satellite crater Newcomb J.

This feature is named after the American astronomer Simon Newcomb

Simon Newcomb

Simon Newcomb was a Canadian-American astronomer and mathematician. Though he had little conventional schooling, he made important contributions to timekeeping as well as writing on economics and statistics and authoring a science fiction novel.-Early life:Simon Newcomb was born in the town of...

.

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 Newcomb.

Newcomb	Latitude	Longitude	Diameter
A	29.4° N	43.5° E	19 km
B	28.4° N	45.6° E	23 km
C	29.1° N	45.3° E	29 km
F	31.4° N	42.5° E	28 km
G	28.2° N	44.6° E	16 km
H	28.9° N	42.4° E	12 km
J	28.7° N	44.3° E	23 km
Q	30.3° N	42.8° E	14 km