Craterra

Oceanus Procellarum

A Shallow Regolith Excavation Site at the Apollo 12 Touchdown Zone

Astronauts Pete Conrad and Alan Bean sampled high-albedo ejecta and rim regolith around Sharp-Apollo crater during their November 1969 lunar landing.

Feature Profile & Selenographic Data

Feature type
landing
Coordinates
3.02° S · 23.43° W
Diameter
0.01 km
IAU approval
1973/01/01 00:00:00
LAC quadrangle
LAC-76 · Montes Riphaeus

Geological Chronicle

Sharp-Apollo is a small crater in Oceanus Procellarum, located southwest of where Apollo 12 astronauts Pete Conrad and Alan Bean landed the Lunar Module Intrepid on November 19, 1969. During the mission, the crew referred to the feature simply as Sharp, before the International Astronomical Union formally adopted the name Sharp-Apollo in 1973. Larger craters such as Bench lie to the east, while Head and Surveyor craters sit further to the northeast.

Sharp crater has a rim elevated 0.66 m high, composed of high-albedo material splashed out radially that is softer than normal regolith. The Apollo 12 Preliminary Science Report noted that the crater appears to have just barely penetrated the regolith, leaving a floor terrace probably controlled by subregolith bedrock at a depth of approximately 3 m. A core tube driven into the rim penetrated the ejecta without difficulty.

Conrad and Bean excavated a small trench on the east side of Sharp crater to collect soil and core samples. From the bottom of the trench, they collected sample 12023 in a Lunar Environment Sample Container, followed by drive tube sample 12027. They also collected sample 12024 from the top of the trench using a Gas Analysis Sample Container.

Chronology & Exploration

  1. 1969 Apollo 12 Exploration

    Pete Conrad and Alan Bean land near Sharp-Apollo crater and excavate a small trench on its eastern rim.

  2. 1973 IAU Name Adoption

    The International Astronomical Union formally adopts the name Sharp-Apollo for the crater.

Scientific Sources & References

Name Origin

Astronaut-named feature, Apollo 12 site.

Interactive Lunar Surface

Explore Sharp-Apollo in 3D

Inspect lunar elevation data and the official selenographic position.