Stewart is a small
lunar impact crater
An impact crater is a depression (geology), depression in the surface of a solid astronomical body formed by the hypervelocity impact event, impact of a smaller object. In contrast to volcanic craters, which result from explosion or internal c ...
that lies to the northeast of the
Mare Spumans, a small
lunar mare near the eastern limb of the
Moon
The Moon is Earth's only natural satellite. It Orbit of the Moon, orbits around Earth at Lunar distance, an average distance of (; about 30 times Earth diameter, Earth's diameter). The Moon rotation, rotates, with a rotation period (lunar ...
. It was named after American astrophysicist
John Quincy Stewart.
It is located to the north of the crater
Pomortsev, and to the southwest of the
lava
Lava is molten or partially molten rock (magma) that has been expelled from the interior of a terrestrial planet (such as Earth) or a Natural satellite, moon onto its surface. Lava may be erupted at a volcano or through a Fissure vent, fractu ...
-flooded
Dubyago. Stewart was previously designated Dubyago Q before being named by the
IAU. This is a circular crater with a low outer rim and a level, featureless interior floor.
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{{Commons category
Impact craters on the Moon