Definition
Montes Recti is a linear mountain range on the Moon, situated on the near side within the lunar mare known as Mare Imbrium. It is one of the named lunar Montes (mountain ranges) recognized by the International Astronomical Union (IAU).
Overview
The Montes Recti extends roughly east–west across the northern portion of Mare Imbrium, lying between the craters Clavius to the east and Kern to the west. The range was first observed through telescopic studies in the 17th century, but its detailed morphology was mapped by photographic missions, notably the Lunar Orbiter and Apollo program imagery. The feature is notable for its unusually straight alignment, which contrasts with the more irregular shapes of many other lunar mountain ranges.
Etymology/Origin
The name “Montes Recti” is derived from Latin, meaning “straight mountains.” The IAU approved this designation in 1935, following the convention of using Latin terminology for lunar topographic features.
Characteristics
| Property | Description |
|---|---|
| Location | Latitude ~ 30° N, Longitude ~ 4° W (selenographic coordinates) |
| Length | Approximately 90 km (56 mi) |
| Width | Typically 5–10 km across the ridge crest |
| Elevation | Peaks rise up to ~ 1.5 km above the surrounding mare surface |
| Geology | The range consists of basaltic mare material uplifted by underlying crustal faults; its linear form suggests formation along a thrust fault or a pre-existing structural lineament. |
| Surrounding Features | Bordered to the north by the Sinus Iridum bay and to the south by the smooth mare basalt of Mare Imbrium. |
| Exploration | No crewed missions have landed directly on Montes Recti, but high‑resolution imaging from Lunar Reconnaissance Orbiter (LRO) has provided detailed topographic data. |
Related Topics
- Mare Imbrium – The lunar mare that hosts Montes Recti.
- Lunar mountain ranges – Other named ranges such as Montes Apenninus, Montes Caucasus, and Montes Alpes.
- Lunar geology – The study of the Moon’s crustal structure, impact processes, and volcanic activity.
- International Astronomical Union (IAU) nomenclature – The authority responsible for naming planetary features.
References
- International Astronomical Union (IAU) Gazetteer of Planetary Nomenclature.
- Wilhelms, D. E. (1987). The Geologic History of the Moon. U.S. Geological Survey Professional Paper 1348.
- Lunar Reconnaissance Orbiter (LRO) data archives.