Definition
Holetschek is a lunar impact crater officially recognized by the International Astronomical Union (IAU).
Overview
The crater is situated on the far side of the Moon, away from the Earth‑visible hemisphere. It is classified as a relatively small, circular impact feature that exhibits the typical characteristics of lunar craters, such as a raised rim, sloping inner walls, and a relatively smooth floor. The crater lies in a region populated by several other named formations, and its position has been catalogued in the IAU’s Gazetteer of Planetary Nomenclature.
Etymology / Origin
The name Holetschek honors Johann Holetschek (1849 – 1923), an Austrian astronomer noted for his work on cometary orbits and celestial mechanics. The IAU formally adopted the name in 1970 as part of its program to assign names of distinguished scientists to lunar features.
Characteristics
- Location: Far side of the Moon; exact selenographic coordinates are listed in the IAU Gazetteer (approximately 20° N latitude, 124° E longitude).
- Size: The crater’s diameter is reported to be about 30 km. Accurate information is not confirmed for the precise measurement.
- Morphology: Holetschek appears relatively well‑preserved with a distinct rim and interior that lacks prominent central peaks or terracing, typical of craters of this size. No substantial evidence of lava flooding or significant degradation has been documented.
- Surrounding Features: The crater is positioned near other far‑side formations such as the craters Lebedev and Schaeberle, but the immediate vicinity is largely dominated by impact‑related topography.
Related Topics
- Lunar Nomenclature – the IAU process for naming lunar craters after notable scientists.
- Johann Holetschek – biography and contributions to astronomy.
- Impact Cratering – mechanisms of crater formation on the Moon and other terrestrial bodies.
- Far Side of the Moon – geological and observational characteristics of the lunar hemisphere not visible from Earth.