Syrtis Major Planum (Mars)
Data as of 2026-10-23
What it is
- Type
- Planum, plana
- IAU definition
Plateau or high plain
- Diameter
- 1,214.9 km, 36 % of the radius of its body
- Centre
- 9.2° N, 67.1° east (planetocentric latitude, east longitude from 0 to 360°, the IAU convention)
- Name adopted
- 1973
- Origin of the name
Albedo feature name; changed from Planitia to Planum.
Quoted in English, as the IAU publishes it.
In Galaxy
Opens its body in the application, the camera turned towards Syrtis Major Planum.
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 | 620 | September 15, 1997 | June 30, 2001 |
| Mars Global Surveyor · Mars Orbiter Camera | 13,624 | October 11, 1997 | October 16, 2006 |
| 2001 Mars Odyssey Orbiter · Thermal Emission Imaging System | 29,415 | February 21, 2002 | November 27, 2025 |
| ESA's Mars Express · Planetary Fourier Spectrometer | 1,656 | January 18, 2004 | December 28, 2018 |
| ESA's Mars Express · Observatoire Mineralogie, Eau, Glaces, Activite | 672 | January 18, 2004 | January 3, 2024 |
| ESA's Mars Express · High Resolution Stereo Camera | 874 | March 23, 2004 | November 2, 2025 |
| ESA's Mars Express · Mars Advanced Radar for Subsurface and Ionsphere Sounding | 3,319 | July 9, 2005 | April 24, 2022 |
| Mars Reconnaissance Orbiter · Compact Reconnaissance Imaging Spectrometer for Mars | 21,598 | September 30, 2006 | May 7, 2022 |
| Mars Reconnaissance Orbiter · High-Resolution Imaging Science Experiment | 1,330 | November 12, 2006 | July 15, 2026 |
| Mars Reconnaissance Orbiter · Context Camera | 1,384 | December 9, 2006 | May 25, 2026 |
| Mars Reconnaissance Orbiter · Shallow Radar | 2,362 | January 22, 2007 | November 11, 2025 |
| ExoMars Trace Gas Orbiter · Colour and Stereo Surface Imaging System | 1,671 | April 30, 2018 | December 19, 2024 |
| Viking Orbiter 1 and 2 · Visual Imaging Subsystem Camera A/B | 1,137 | 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/5796
Type definitions: IAU Descriptor Terms, read on October 17, 2026. https://planetarynames.wr.usgs.gov/DescriptorTerms