Heron is a small 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 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...

, less than 20 kilometers from the equator

Equator

An equator is the intersection of a sphere's surface with the plane perpendicular to the sphere's axis of rotation and containing the sphere's center of mass....

. It lies between the slightly larger crater Ctesibius

Ctesibius (crater)

Ctesibius is a small lunar impact crater that is located near the equator, on the far side of the Moon. It lies between the larger crater Abul Wáfa to the west and the slightly smaller Heron to the east....

 just to the west and Soddy

Soddy (crater)

Soddy is an eroded lunar impact crater lying on the far side of the Moon, invisible from the Earth, to the south-southeast of the prominent crater King. Material from the ray system surrounding King covers the sides and interior of Soddy...

 a little farther to the east. Almost directly to the north is the prominent crater King

King (crater)

King is a prominent lunar impact crater that is located on the far side of the Moon, and can not be viewed directly from Earth. It forms a pair with Ibn Firnas, which is only slightly larger and is attached to the northeast rim of King...

.

This formation is an undistinguished, circular crater. The interior floor is relatively flat and featureless. There is a tiny craterlet along the eastern rim that has a slightly higher albedo

Albedo

Albedo , or reflection coefficient, is the diffuse reflectivity or reflecting power of a surface. It is defined as the ratio of reflected radiation from the surface to incident radiation upon it...

 than the remainder of the crater.

This crater is also called Hero in some references. Its name comes from Heron (or Hero) of Alexandria

Hero of Alexandria

Hero of Alexandria was an ancient Greek mathematician and engineerEnc. Britannica 2007, "Heron of Alexandria" who was active in his native city of Alexandria, Roman Egypt...

.

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 Heron.

Heron	Latitude	Longitude	Diameter
H	0.2° N	120.7° E	20 km
Y	1.4° N	119.7° E	15 km