Armstrong (crater)

Armstrong
	Lunar Orbiter 5 image
Coordinates	1°24′N 25°00′E / 1.4°N 25.0°E
Diameter	4.21 km (2.62 mi)
Depth	0.7 km (0.43 mi)
Colongitude	335° at sunrise
Eponym	Neil Armstrong

Armstrong is a small, bowl-shaped lunar impact crater located in the southern part of the Mare Tranquillitatis.^[2] It lies about 50 kilometers to the northeast of the Apollo 11 landing site, Tranquility Base. Named after American astronaut Neil Armstrong (1930-2012),^[1] the crater is the easternmost of the row of three craters named in honor of the Apollo 11 crew members. Their designations were formally adopted by the International Astronomical Union in 1970. To the north is the Ranger 8 impact site.^[3]

This crater was previously identified as Sabine E^[4] before being renamed by the IAU in 1970.^[5] Sabine itself is located due west of Armstrong.^[2]

Gallery

Oblique view of Armstrong crater from Apollo 10
Annotated oblique view from Apollo 16 showing the vicinity of the Apollo 11 landing site (A11) with the craters Aldrin (Al), Collins (C), Armstrong (Ar), and Moltke (M), facing north.

References

1 2 "Armstrong". Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program.
1 2 Bussey, B.; Spudis, P. (2004). The Clementine Atlas of the Moon. New York: Cambridge University Press. p. 60. ISBN 978-0-521-81528-4.
↑ Chu, Alan; et al. (2012). The Cambridge Photographic Moon Atlas. Translated by Storm Dunlop. Cambridge University Press. pp. 12–13. ISBN 978-1-107-01973-7.
↑ Moore, Patrick; Rees, Robin (2014). Patrick Moore's Data Book of Astronomy (2 ed.). Cambridge University Press. p. 51. ISBN 978-1-139-49522-6.
↑ McElheny, Victor K. (August 15, 1970). "Armstrong, Aldrin, Collins on Moon again–as Names". The Boston Globe. Boston, Massachusetts. p. 16. Retrieved 2026-05-22 – via Newspapers.com.

[GPN-1] 1 2 "Armstrong". Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program.

[Bussey_Spudis_2004-2] 1 2 Bussey, B.; Spudis, P. (2004). The Clementine Atlas of the Moon. New York: Cambridge University Press. p. 60. ISBN 978-0-521-81528-4.

[Chu_et_al_2012-3] Chu, Alan; et al. (2012). The Cambridge Photographic Moon Atlas. Translated by Storm Dunlop. Cambridge University Press. pp. 12–13. ISBN 978-1-107-01973-7.

[Moore_Rees_2014-4] Moore, Patrick; Rees, Robin (2014). Patrick Moore's Data Book of Astronomy (2 ed.). Cambridge University Press. p. 51. ISBN 978-1-139-49522-6.

[McElheny_1970-5] McElheny, Victor K. (August 15, 1970). "Armstrong, Aldrin, Collins on Moon again–as Names". The Boston Globe. Boston, Massachusetts. p. 16. Retrieved 2026-05-22 – via Newspapers.com.

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References