Fernelius (crater)

Fernelius is a lunar impact crater located in the southern highlands just to the north of the walled plain Stöfler. It was named after 16th century French astronomer Jean Fernel.^[1] The crater Kaiser is located next to the northwest rim of Fernelius. To the north-northwest are the craters Nonius and Walther. Southeast of Fernelius is the crater cluster of Miller, Nasireddin, Huggins, and Orontius.

Fernelius

Lunar Orbiter 4 image
Coordinates	38.1°S 4.9°E / -38.1; 4.9
Diameter	65 km
Depth	1.8 km
Colongitude	356° at sunrise
Eponym	Jean Fernel

In the past the floor of Fernelius has been resurfaced, leaving a relatively flat, featureless surface with no central peaks. The crater rim has been heavily worn and indented by impacts, the most prominent being Fernelius A which intrudes into the western rim.

Satellite craters

Fernelius crater and its satellite craters taken from Earth in 2012 at the University of Hertfordshire's Bayfordbury Observatory with the telescopes Meade LX200 14" and Lumenera Skynyx 2-1

By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Fernelius.

Fernelius	Latitude	Longitude	Diameter
A	38.3° S	3.5° E	30 km
B	37.4° S	4.1° E	10 km
C	38.9° S	4.4° E	7 km
D	38.2° S	6.2° E	7 km
E	38.3° S	6.6° E	6 km