Dione Regio (Venus)
Data as of 2026-10-23
What it is
- Type
- Regio, regiones
- IAU definition
A large area marked by reflectivity or color distinctions from adjacent areas, or a broad geographic region
- Diameter
- 2,300 km, 38 % of the radius of its body
- Centre
- 31.5° S, 328° east (planetocentric latitude, east longitude from 0 to 360°, the IAU convention)
- Name adopted
- 1991
- Origin of the name
Greek Titanness; 1st wife of Zeus.
Quoted in English, as the IAU publishes it.
In Galaxy
Opens its body in the application, the camera turned towards Dione Regio.
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 |
|---|---|---|---|
| Arecibo Observatory and National Radio Astronomy Observatory · Radio Telescope / Robert C. Byrd Green Bank Telescope | 15 | June 17, 1988 | May 30, 2020 |
| Magellan · Radar System | 455 | September 15, 1990 | September 14, 1992 |
| ESA's Venus Express · Visible and Infrared Thermal Imaging Spectrometer | 5,085 | May 14, 2006 | October 6, 2014 |
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/1541
Type definitions: IAU Descriptor Terms, read on October 17, 2026. https://planetarynames.wr.usgs.gov/DescriptorTerms