Hevelius is a low-rimmed 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 at the western edge of the Oceanus Procellarum

Oceanus Procellarum

Oceanus Procellarum is a vast lunar mare on the western edge of the near side of the Earth's Moon. Its name derives from the old superstition that its appearance during the second quarter heralded bad weather...

, named after Johannes Hevelius

Johannes Hevelius

Johannes Hevelius Some sources refer to Hevelius as Polish:Some sources refer to Hevelius as German:*Encyplopedia Britannica * of the Royal Society was a councilor and mayor of Danzig , Pomeranian Voivodeship, in the Polish-Lithuanian Commonwealth...

. The smaller but prominent crater Cavalerius

Cavalerius (crater)

Cavalerius is a prominent lunar impact crater that lies on the western edge of the Oceanus Procellarum lunar mare on the west part of the visible Moon. It nearly joins the northern rim of Hevelius to the south....

 is joined to the northern rim by low ridges. Due south of Hevelius is the crater Lohrmann

Lohrmann (crater)

Lohrmann is a small lunar crater that is located to the west of the Oceanus Procellarum, near the western limb of the Moon. It lies to the north of the dark-floored walled plain Grimaldi, and just to the south of the crater Hevelius....

 and the dark-hued Grimaldi

Grimaldi (crater)

Grimaldi is a large basin located near the western limb of the Moon. It lies to the southwest of the Oceanus Procellarum, and southeast of the crater Riccioli...

.

Only a low, eroded rim of Hevelius rises above the surface. The western wall is overlain by several small impacts

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...

. The flat floor of the crater has been flooded by lava

Lava

Lava refers both to molten rock expelled by a volcano during an eruption and the resulting rock after solidification and cooling. This molten rock is formed in the interior of some planets, including Earth, and some of their satellites. When first erupted from a volcanic vent, lava is a liquid at...

, and is now cross-crossed by a system of small clefts named the Rimae Hevelius. There is a low, one-km-high central peak offset to the northwest of the mid-point. The northeastern part of the interior is more irregular and contains a straight ridge running toward the southeast. Along the northwest floor, near the inner wall, is a small crater.

This feature is sometimes referred to as Hevel, a name that was used to refer to Johannes Hevelius.

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 Hevelius.

Hevelius	Latitude	Longitude	Diameter
A	2.9° N	68.1° W	14 km
B	1.4° N	68.8° W	14 km
D	3.1° N	60.8° W	8 km
E	2.9° N	65.7° W	9 km
J	0.7° N	69.7° W	14 km
K	1.5° N	70.0° W	6 km
L	2.0° N	70.3° W	7 km