Hagecius is a lunar impact crater in the southeastern part of the Moon's near side. It was named after 16th century Czech naturalist Tadeáš Hájek (Latinized as Thaddaeus Hagecius). This crater forms a triangular formation with the craters Rosenberger to the north-northwest and Nearch to the west-northwest. Like both of these craters, Hagecius has undergone erosion from subsequent impacts, and its outer rim is worn and irregular. The southeastern rim in particular is overlaid by three smaller craters designated Hagecius C, B, and G.
The interior floor of Hagecius is a level plain with no significant rises. There is a small craterlet to the northwest of the midpoint, and a few tiny craterlets marking the southeastern half of the floor. About a third of the interior floor on this side is also overlaid by the outer ramparts of the three satellite craters mentioned above.
To the northeast of Hagecius is the crater Biela, a younger formation.
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 Hagecius.
Hagecius LatitudeLongitudeDiameterA58.2° S47.2° E61 kmB60.4° S48.9° E34 kmC60.7° S47.5° E24 kmD57.1° S47.0° E17 kmE63.3° S49.1° E44 kmF62.3° S44.8° E36 kmG61.8° S47.6° E30 kmH60.4° S50.7° E13 kmJ62.6° S57.8° E14 kmK61.2° S52.0° E31 kmL61.5° S55.7° E8 kmM60.0° S52.0° E10 kmN60.2° S53.1° E16 kmP59.8° S53.2° E7 kmQ59.2° S53.0° E20 kmR58.7° S52.7° E15 kmS59.0° S54.6° E10 kmT60.6° S57.4° E14 kmV61.9° S58.3° E14 km
See also 1995 Hajek, asteroid
References