D'Arrest (crater)

D'Arrest
	Lunar Orbiter 4 image
Coordinates	2°18′N 14°42′E / 2.3°N 14.7°E
Diameter	29.67 km (18.44 mi)
Depth	1.5 km (0.93 mi)
Colongitude	344° at sunrise
Eponym	Heinrich d'Arrest

D'Arrest is a lunar impact crater that is located in the lava-flooded region to the west of the Mare Tranquillitatis.^[3] It lies to the southeast of the crater Agrippa and northwest of Delambre. Just to the north are the small, bowl-shaped craters De Morgan and Cayley.^[4]

The outer rim of D'Arrest is broken in several places, with a gash at the south end and a wide gap to the northeast where only a low ridge remains in place of the original wall. The interior has been resurfaced by basaltic lava, leaving a nearly flat, featureless floor. The surviving rim is low and worn, with ridges connecting it to the south and southwest.^[5]^: 60

This formation is named after the German astronomer Heinrich Louis d'Arrest (1822-1875). His name was included in the lunar nomenclature of German astronomer Johann F. J. Schmidt in 1878.^[6] Its designation was formally adopted by the International Astronomical Union in 1935.^[1]

Satellite craters

By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to D'Arrest.^[7]

D'Arrest^[5]^: 296	Latitude	Longitude	Diameter
A	1.9° N	13.7° E	4 km
B	1.0° N	13.6° E	5 km
M	1.9° N	13.6° E	23 km
R	0.5° N	15.6° E	19 km

References

1 2 "D'Arrest". Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program. Retrieved 2026-07-24.
↑ Pike, R. J. (September 1976). "Crater Dimensions from Apollo Data and Supplemental Sources". The Moon. 15 (3–4): 463–477. Bibcode:1976Moon...15..463P. doi:10.1007/BF00562253.
↑ Moore, Patrick (2001). On the Moon. Sterling Publishing Co. p. 175–176. ISBN 978-0-304-35469-6.
↑ "LAC 60" (PDF). Gazeteer of Planetary Nomenclature. Retrieved 2026-07-25.
1 2 Bussey, B.; Spudis, P. (2004). The Clementine Atlas of the Moon. New York: Cambridge University Press. ISBN 978-0-521-81528-4.
↑ Whitaker, Ewen A. (1999). Mapping and Naming the Moon. Cambridge University Press. pp. 131, 224. ISBN 978-0-521-62248-6.
↑ Grego, P. (2015). "Satellite Crater". In Hargitai, H.; Kereszturi, Á. (eds.). Encyclopedia of Planetary Landforms. New York, NY: Springer. doi:10.1007/978-1-4614-3134-3_328.

Sources

Price, Fred W. (1988). The Moon Observer's Handbook. Cambridge University Press. ISBN 978-0-521-33500-3.
Rükl, Antonín (1990). Atlas of the Moon. Kalmbach Books. ISBN 978-0-913135-17-4.
Wlasuk, Peter T. (2000). Observing the Moon. Springer. ISBN 978-1-85233-193-1.

External links

D'Arrest at The Moon Wiki
Wood, Chuck (December 12, 2006). "How Deep is That Hole". Lunar Photo of the Day. Archived from the original on June 14, 2011. - includes a couple of craters such as D'Arrest (sometimes as d'Arrest)

[GPN-1] 1 2 "D'Arrest". Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program. Retrieved 2026-07-24.

[Pike_1976-2] Pike, R. J. (September 1976). "Crater Dimensions from Apollo Data and Supplemental Sources". The Moon. 15 (3–4): 463–477. Bibcode:1976Moon...15..463P. doi:10.1007/BF00562253.

[Moore_2001-3] Moore, Patrick (2001). On the Moon. Sterling Publishing Co. p. 175–176. ISBN 978-0-304-35469-6.

[LAC-60-4] "LAC 60" (PDF). Gazeteer of Planetary Nomenclature. Retrieved 2026-07-25.

[Bussey_Spudis_2004-5] 1 2 Bussey, B.; Spudis, P. (2004). The Clementine Atlas of the Moon. New York: Cambridge University Press. ISBN 978-0-521-81528-4.

[Whitaker_1999-6] Whitaker, Ewen A. (1999). Mapping and Naming the Moon. Cambridge University Press. pp. 131, 224. ISBN 978-0-521-62248-6.

[Grego_2015-7] Grego, P. (2015). "Satellite Crater". In Hargitai, H.; Kereszturi, Á. (eds.). Encyclopedia of Planetary Landforms. New York, NY: Springer. doi:10.1007/978-1-4614-3134-3_328.

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