Alma Merghen Planitia (Venus)
Data as of 2026-10-23
What it is
- Type
- Planitia, planitiae
- IAU definition
Low plain
- Diameter
- 1,500 km, 25 % of the radius of its body
- Centre
- 76° S, 100° east (planetocentric latitude, east longitude from 0 to 360°, the IAU convention)
- Name adopted
- 1997
- Origin of the name
Mongol/Tibet/Buryat "Gheser" epic tale heroine.
Quoted in English, as the IAU publishes it.
In Galaxy
Opens its body in the application, the camera turned towards Alma Merghen 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 |
|---|---|---|---|
| Magellan · Radar System | 972 | October 24, 1990 | September 6, 1991 |
| ESA's Venus Express · Visible and Infrared Thermal Imaging Spectrometer | 6,694 | May 15, 2006 | August 11, 2014 |
| MESSENGER at Venus · MERCURY ATMOSPHERIC AND SURFACE COMPOSITION SPECTROMETER | 6 | April 15, 2007 | April 15, 2007 |
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/195
Type definitions: IAU Descriptor Terms, read on October 17, 2026. https://planetarynames.wr.usgs.gov/DescriptorTerms