Fabricus is a lunar 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 within the northeast part of the walled plain Janssen

Janssen (lunar crater)

Janssen is an ancient impact crater located in the highland region near the southeastern lunar limb. The entire structure has been heavily worn and is marked by many lesser crater impacts. The outer wall is breached in multiple locations, but the outline of the crater rim can still be observed...

. Attached to the north-northwest rim is the slightly larger cater Metius

Metius (crater)

Metius is a lunar impact crater located in the rugged highlands to the southeast of the Moon's near side. To the southwest the rim is attached to the crater Fabricius. Offset to the east-northeast is the heavily worn crater Brenner...

. Fabricius has multiple central peaks that rise to 0.8 km, with a rugged rise to the northwest running north–south. The rim is lumpy and somewhat distended, most noticeably to the southwest and south. It is 78 kilometers in diameter and 2,500 meters deep. It is from the Eratosthenian

Eratosthenian

The Eratosthenian period in the lunar geologic timescale runs from 3,200 million years ago to 1,100 million years ago. It is named after the crater Eratosthenes, whose formation marks the beginning of this period. The formation of the crater Copernicus marks its end, and the beginning of the...

 period, 3.2 to 1.1 billion years ago. It is named after David Fabricius

David Fabricius

David Fabricius , was a German theologian who made two major discoveries in the early days of telescopic astronomy, jointly with his eldest son, Johannes Fabricius ....

, a 16th century German

Germany

Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

astronomer.

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 Fabricius.

Fabricius	Latitude	Longitude	Diameter
A	44.6° S	44.0° E	45 km
B	43.6° S	44.9° E	17 km
J	45.8° S	45.2° E	16 km