Biela is a lunar impact crater that is located in the rugged highlands of the southeastern Moon, close to the limb. The crater lies to the east of Rosenberger, to the southeast of the Watt–Steinheil double crater.
The rim of this crater is overlaid by a pair of small but notable craters: Biela C across the northeast rim and Biela W along the western inner wall. The satellite crater Biela B is attached to the southwestern outer rim, and ejecta from Biela covers the northwestern part of the interior. Despite a certain degree of wear, the rim of Biela remains relatively well-defined, especially in the southeast. The interior floor is flat and not marked by any craterlets of note. There is a central peak formation of three ridges located just to the northeast of the midpoint.
This formation is named after Austrian astronomer Wilhelm von Biela (1782-1856). The name was incorporated into lunar nomenclature by the German astronomer Johann Mädler during the 19th century. Its designation was officially adopted by the International Astronomical Union in 1935.
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 Biela.
BielaLatitudeLongitudeDiameterA52.9° S53.3° E26 kmB56.5° S49.6° E43 kmC54.3° S53.5° E26 kmD55.8° S56.3° E14 kmE56.4° S56.3° E8 kmF56.3° S54.5° E9 kmG56.2° S53.9° E10 kmH57.9° S54.2° E8 kmJ57.0° S52.9° E14 kmT53.8° S49.9° E7 kmU53.4° S49.0° E16 kmV53.6° S48.5° E6 kmW55.1° S49.6° E16 kmY54.9° S58.0° E15 kmZ53.8° S57.0° E48 km
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