Back Hellas Planitia ALS Hellas Planitia Catalan Hellas Planitia Czech Hellas Planitia German Ελλάς (Άρης) Greek Hellas Planitia Esperanto Hellas Planitia Spanish هامونه هلاس Persian Hellas Planitia Finnish Hellas Planitia French
 Viking orbiter image mosaic of Hellas Planitia | |
| Location | Hellas quadrangle, Mars |
|---|---|
| Coordinates | 42°24′S 70°30′E / 42.4°S 70.5°E |
| Diameter | 2,300 km (1,400 mi) |
| Depth | 7,152 m (23,465 ft) |
Hellas Planitia /ˈhɛləs pləˈnɪʃiə/ is a plain located within the huge, roughly circular impact basin Hellas[a] located in the southern hemisphere of the planet Mars.[3] Hellas is the third- or fourth-largest known impact crater in the Solar System. The basin floor is about 7,152 m (23,465 ft) deep, 3,000 m (9,800 ft) deeper than the Moon's South Pole-Aitken basin, and extends about 2,300 km (1,400 mi) east to west.[4][5] It is centered at 42°24′S 70°30′E / 42.4°S 70.5°E.[3] It features the lowest point on Mars, serves as a known source of global dust storms, and may have contained lakes and glaciers.[6] Hellas Planitia spans the boundary between the Hellas quadrangle and the Noachis quadrangle.
- ^ "Martian weather observation". Mars Global Surveyor. Palo Alto, California: Stanford University. Archived from the original on 31 May 2008. MGS radio science measured 11.50 mbar at 34.4° S 59.6° E −7152 meters
- ^ "Hellas". USGS Astrogeology Science Center. Gazetteer of Planetary Nomenclature. United States Geological Survey. Retrieved 10 March 2015.
- ^ a b "Hellas Planitia". Gazetteer of Planetary Nomenclature. USGS Astrogeology Science Center. Retrieved 10 March 2015.
- ^ The part below zero datum, see Geography of Mars#Zero elevation
- ^ "Section 19-12". Goddard Space Flight Center. Remote sensing tutorial. NASA. Archived from the original on 30 October 2004.
- ^ Bleamaster, Leslie F. III; Crown, David A. (19 March 2010). "Geologic Map of MTM -40277, -45277, -40272, and -45272 Quadrangles, Eastern Hellas Planitia Region of Mars". U.S. Geological Survey Publications Warehouse. Retrieved 30 June 2024.
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