Elbow is a feature on Earth's

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 ...

, a crater in the

Hadley–Apennine Hadley–Apennine is a region on the Near side of the Moon, near side of Moon, Earth's Moon that served as the landing site for the United States, American Apollo 15 mission, the fourth crewed landing on the Moon and the first of the "List of Apol ...

region. Astronauts

David Scott David Randolph Scott (born June 6, 1932) is an American retired test pilot and NASA astronaut who was the List of Apollo astronauts#People who have walked on the Moon, seventh person to walk on the Moon. Selected as part of the NASA Astronaut ...

and

James Irwin James Benson Irwin (March 17, 1930 – August 8, 1991) was an American astronaut, aeronautical engineer, test pilot, and a United States Air Force Aviator, pilot. He served as Lunar Module pilot for Apollo 15, the fourth human lunar landin ...

visited the east rim of it in 1971, on the

Apollo 15 Apollo 15 (July 26August 7, 1971) was the ninth crewed mission in the Apollo program and the fourth Moon landing. It was the first List of Apollo missions#Alphabetical mission types, J mission, with a longer stay on the Moon and a greate ...

mission, during EVA 1. The east rim of Elbow was designated Geology Station 1 of the mission. Geology Station 2 was to the southwest of the crater, up the slope of

Mons Hadley Delta Mons Hadley Delta (δ) is a massif in the northern portion of the Montes Apenninus, a range in the northern hemisphere of the Moon adjacent to Mare Imbrium. It has a height of 3.6 km above the plains to the north and west. To the north of ...

A15 PSR Fig 5-56 Planimetric map Station 1

Elbow is located on the edge of Hadley Rille, about 1 km northeast of the larger St. George crater, and about 3.2 km southwest of the Apollo 15 landing site itself. The ''Apollo 15 Preliminary Science Report''Apollo 15 Preliminary Science Report
1972, NASA SP-289, Scientific and Technical Information Office, NATIONAL AERONAUTICS AND SPACE ADMINISTRATION, Washington, D.C. describes Elbow as follows: The crater was named by the astronauts after its location at a bend, or elbow, in Hadley Rille, and the name was formally adopted by the IAU in 1973.

Samples

The following samples were collected from Elbow Crater (Station 1), as listed in Table 5-II of the ''Apollo 15 Preliminary Science Report''. Sample type, lithology, and description are from Table 5-IV of the same volume.

External links

Apollo 15 Traverses
Lunar Photomap 41B4S4(25)

References

{{reflist Impact craters on the Moon