Nonius (crater)
Encyclopedia
Nonius is a lunar
impact crater
. It is located in the rugged southern highlands on the Moon
's near side. The northwestern side and about half the interior floor are overlain by the rim and outer rampart of the walled plain Walther
. About half its diameter to the southeast is the smaller crater Kaiser
, and slightly farther to the south lies Fernelius
.
The surviving rim of this crater has been damaged by multiple impacts, including the merged pair of Nonius K and Nonius L across the northern rim. The surviving outline is more hexagonal in shape than round. The interior floor has an uneven surface, with low ridges and a crater-formed gouge in the western half.
Moon
The Moon is Earth's only known natural satellite,There are a number of near-Earth asteroids including 3753 Cruithne that are co-orbital with Earth: their orbits bring them close to Earth for periods of time but then alter in the long term . These are quasi-satellites and not true moons. For more...
impact crater
Impact crater
In the broadest sense, the term impact crater can be applied to any depression, natural or manmade, resulting from the high velocity impact of a projectile with a larger body...
. It is located in the rugged southern highlands on the Moon
Moon
The Moon is Earth's only known natural satellite,There are a number of near-Earth asteroids including 3753 Cruithne that are co-orbital with Earth: their orbits bring them close to Earth for periods of time but then alter in the long term . These are quasi-satellites and not true moons. For more...
's near side. The northwestern side and about half the interior floor are overlain by the rim and outer rampart of the walled plain Walther
Walther (crater)
Walther is an ancient lunar impact crater located in the southern highland region of the Moon. It is joined along the western rim to the crater Deslandres...
. About half its diameter to the southeast is the smaller crater Kaiser
Kaiser (lunar crater)
Kaiser is a lunar crater. It lies in the crater-riddled terrain in the southern part of the Moon's near side. The crater is nearly attached to the northeast rim the slightly larger crater Fernelius, and the two are separated by an irregular patch of ground only a few kilometers wide...
, and slightly farther to the south lies Fernelius
Fernelius (crater)
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...
.
The surviving rim of this crater has been damaged by multiple impacts, including the merged pair of Nonius K and Nonius L across the northern rim. The surviving outline is more hexagonal in shape than round. The interior floor has an uneven surface, with low ridges and a crater-formed gouge in the western half.
Satellite craters
By convention these features are identified on lunar maps by placing the letter on the side of the crater mid-point that is closest to Nonius.| Nonius | Latitude | Longitude | Diameter |
|---|---|---|---|
| A | 35.4° S | 5.6° E | 10 km |
| B | 35.8° S | 2.0° E | 21 km |
| C | 35.4° S | 1.1° E | 7 km |
| D | 35.5° S | 1.8° E | 6 km |
| F | 35.9° S | 3.8° E | 7 km |
| G | 34.7° S | 5.7° E | 6 km |
| K | 33.7° S | 3.9° E | 18 km |
| L | 33.5° S | 3.5° E | 31 km |
| Q | 35.9° S | 4.2° E | 7 km |
| R | 35.9° S | 3.3° E | 10 km |
| S | 34.8° S | 4.3° E | 4 km |