&sq=Google&lang=en&file=File:Hippalus_crater_4132_h1.jpg) Lunar Orbiter 4 image | |
| Coordinates | 24°48′S 30°12′W / 24.8°S 30.2°W |
|---|---|
| Diameter | 58 km |
| Depth | 1.2 km |
| Colongitude | 30° at sunrise |
| Eponym | Hippalus |
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Hippalus is the remnant of a lunar impact crater on the eastern edge of Mare Humorum. It was named after ancient Greek explorer Hippalus.[1] To the southeast is the crater Campanus, and to the northwest is the small flooded crater Loewy.
The southwest rim of Hippalus is missing, and the crater forms a bay along the edge of the mare. The surviving rim is worn and eroded, forming a low, circular mountain range. The lava-flooded floor of Hippalus is bisected by a wide rille belonging to the Rimae Hippalus. This rille follows a course to the south before curving gently to the southwest for a total length of 240 kilometers. The crater floor to the east of this rille is more rugged than the area in the western half.
- ^ "Gazetteer of Planetary Nomenclature | Hippalus". usgs.gov. International Astronomical Union. Retrieved September 4, 2017.