Cydonia Mensae (Mars)
Data as of 2026-10-23
What it is
- Type
- Mensa, mensae
- IAU definition
A flat-topped prominence with cliff-like edges
- Diameter
- 765 km, 23 % of the radius of its body
- Centre
- 34.56° N, 347.67° east (planetocentric latitude, east longitude from 0 to 360°, the IAU convention)
- Name adopted
- 1976
- Origin of the name
From albedo feature at 50N, 355W.
Quoted in English, as the IAU publishes it.
In Galaxy
Opens its body in the application, the camera turned towards Cydonia Mensae.
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 | 436 | September 15, 1997 | June 30, 2001 |
| Mars Global Surveyor · Mars Orbiter Camera | 6,891 | February 2, 1998 | October 15, 2006 |
| 2001 Mars Odyssey Orbiter · Thermal Emission Imaging System | 14,562 | March 8, 2002 | November 27, 2025 |
| ESA's Mars Express · Observatoire Mineralogie, Eau, Glaces, Activite | 1,060 | March 4, 2004 | January 10, 2024 |
| ESA's Mars Express · Planetary Fourier Spectrometer | 1,404 | April 1, 2004 | December 23, 2018 |
| ESA's Mars Express · High Resolution Stereo Camera | 486 | April 1, 2004 | August 29, 2023 |
| ESA's Mars Express · Mars Advanced Radar for Subsurface and Ionsphere Sounding | 2,366 | July 6, 2005 | February 11, 2022 |
| Mars Reconnaissance Orbiter · Context Camera | 741 | September 28, 2006 | May 15, 2026 |
| Mars Reconnaissance Orbiter · Compact Reconnaissance Imaging Spectrometer for Mars | 10,601 | November 8, 2006 | April 27, 2022 |
| Mars Reconnaissance Orbiter · High-Resolution Imaging Science Experiment | 967 | November 14, 2006 | July 28, 2026 |
| Mars Reconnaissance Orbiter · Shallow Radar | 3,513 | February 21, 2007 | December 21, 2025 |
| ExoMars Trace Gas Orbiter · Colour and Stereo Surface Imaging System | 889 | June 10, 2018 | December 19, 2024 |
| Viking Orbiter 1 and 2 · Visual Imaging Subsystem Camera A/B | 718 | 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/1367
Type definitions: IAU Descriptor Terms, read on October 17, 2026. https://planetarynames.wr.usgs.gov/DescriptorTerms