Fernelius (crater)

Fernelius
Coordinates 38°06′S 4°54′E / 38.1°S 4.9°E / -38.1; 4.9Coordinates: 38°06′S 4°54′E / 38.1°S 4.9°E / -38.1; 4.9
Diameter 65 km
Depth 1.8 km
Colongitude 356° at sunrise
Eponym Jean Fernel

Fernelius is a lunar impact crater located in the southern highlands just to the north of the walled plain Stöfler. 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.

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. Ray material from Tycho lies along the northwest rim and around it towards the northwest.

Names

The crater is named after Jean Fernel, it was given its name by Giovanni Riccioli, whose 1651 nomenclature system has become standardized.[1][2] Earlier lunar cartographers had given the feature different names. Johannes Hevelius in his 1647 map called it "Montes Fortis" after the "strong mountains" of the ancient world.[1][3]

In some publications, it is misidentified as "Furnelius" especially the 1979 NASA Lunar Chart (LPC-1).

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

References

  1. 1 2 Ewen A. Whitaker, Mapping and Naming the Moon (Cambridge University Press, 1999).
  2. ↑ Riccioli map of the Moon (1651)
  3. ↑ Hevelius map of the Moon (1647)

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  • Wlasuk, Peter T. (2000). Observing the Moon. Springer. ISBN 978-1-85233-193-1.
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