Acidalia Planitia (Mars)
Data as of 2026-10-23
What it is
- Type
- Planitia, planitiae
- IAU definition
Low plain
- Diameter
- 3,505 km, 103 % of the radius of its body
- Centre
- 49.76° N, 339.26° east (planetocentric latitude, east longitude from 0 to 360°, the IAU convention)
- Name adopted
- 1973
- Origin of the name
From classical albedo feature at 44N, 21W.
Quoted in English, as the IAU publishes it.
In Galaxy
Opens its body in the application, the camera turned towards Acidalia Planitia.
Observed by
Instruments whose footprint touches this formation, counted by the PDS Orbital Data Explorer (data frozen on September 29, 2026). A footprint that touches it is not a study of it.
| Mission and instrument | Products | First | Last |
|---|---|---|---|
| Mars Global Surveyor · Mars Orbiter Laser Altimeter | 3,619 | September 15, 1997 | June 30, 2001 |
| Mars Global Surveyor · Mars Orbiter Camera | 45,364 | November 22, 1997 | October 17, 2006 |
| 2001 Mars Odyssey Orbiter · Thermal Emission Imaging System | 259,794 | February 20, 2002 | November 28, 2025 |
| ESA's Mars Express · Observatoire Mineralogie, Eau, Glaces, Activite | 7,094 | January 14, 2004 | January 11, 2024 |
| ESA's Mars Express · Planetary Fourier Spectrometer | 10,646 | January 29, 2004 | December 31, 2018 |
| ESA's Mars Express · High Resolution Stereo Camera | 5,688 | January 29, 2004 | July 3, 2025 |
| ESA's Mars Express · Mars Advanced Radar for Subsurface and Ionsphere Sounding | 19,747 | July 4, 2005 | April 3, 2022 |
| Mars Reconnaissance Orbiter · Context Camera | 10,309 | September 28, 2006 | May 29, 2026 |
| Mars Reconnaissance Orbiter · Compact Reconnaissance Imaging Spectrometer for Mars | 277,770 | September 29, 2006 | May 7, 2022 |
| Mars Reconnaissance Orbiter · High-Resolution Imaging Science Experiment | 14,415 | October 1, 2006 | July 29, 2026 |
| Mars Reconnaissance Orbiter · Shallow Radar | 25,390 | December 6, 2006 | February 9, 2026 |
| ExoMars Trace Gas Orbiter · Colour and Stereo Surface Imaging System | 14,736 | April 14, 2018 | December 19, 2024 |
| Viking Orbiter 1 and 2 · Visual Imaging Subsystem Camera A/B | 5,896 | no date published | no date published |
Sources
International Astronomical Union Working Group for Planetary System Nomenclature, Gazetteer of Planetary Nomenclature, read on October 23, 2026. Feature page: https://planetarynames.wr.usgs.gov/Feature/38
Type definitions: IAU Descriptor Terms, read on October 17, 2026. https://planetarynames.wr.usgs.gov/DescriptorTerms