Definition
Sarmiento is an impact crater located on the planet Mercury.
Overview
The crater is part of Mercury’s heavily cratered terrain and is catalogued among the many named surface features of the planet. It is classified as a relatively well-preserved impact structure, exhibiting typical characteristics such as a raised rim, terraced inner walls, and a central peak complex. The precise dimensions and coordinates of Sarmiento have been measured by spacecraft imaging, but publicly available data provide only approximate values.
Etymology / Origin
The name Sarmiento was chosen by the International Astronomical Union (IAU) to honor Domingo Faustino Sarmiento (1811 – 1888), an influential Argentine statesman, educator, and writer. The IAU’s Working Group for Planetary System Nomenclature approved the name in the early 2010s (the exact year of adoption is not confirmed in accessible sources).
Characteristics
- Location: Sarmiento lies in the northern hemisphere of Mercury; its exact latitude and longitude are recorded in planetary databases, but the specific numeric values are not confirmed here.
- Diameter: Estimates place the crater’s diameter at roughly 100–110 km; precise measurement data are not currently verified.
- Morphology: Like many Mercurian craters of comparable size, Sarmiento possesses a well-defined rim, inward‑sloping walls that may display terracing, and a central peak formed by the rebound of the crater floor after impact.
- Age: The crater is considered relatively young in Mercurian geological terms, retaining sharp morphological features, though its absolute age (in billions of years) has not been definitively established.
- Surroundings: The region surrounding Sarmiento includes a mixture of older, more degraded craters and smooth plains formed by volcanic or impact‑related resurfacing.
Related Topics
- Mercury (planet) – the innermost planet of the Solar System, characterized by a heavily cratered surface.
- Impact crater – a circular depression formed when a meteoroid, asteroid, or comet collides with a planetary surface.
- International Astronomical Union (IAU) planetary nomenclature – the authority responsible for assigning official names to planetary features.
- Domingo Faustino Sarmiento – Argentine writer, educator, and former president, after whom the crater is named.
Note: Where specific numerical data or dates are not conclusively available in publicly verified sources, the information presented reflects the best‑available approximations, and “Accurate information is not confirmed.”