Hadar Regio (Donaldjohanson)
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
- 2.3 km, 118 % of the radius of its body
- Centre
- 18° N, 218° east (planetocentric latitude, east longitude from 0 to 360°, the IAU convention)
- Name adopted
- August 27, 2025
- Origin of the name
Hadar (Ethiopia), the paleontological fossil site within the Afar Triangle where the Lucy fossil was discovered in 1974.
Quoted in English, as the IAU publishes it.
In Galaxy
Opens its body in the application, the camera turned towards Hadar Regio.
Missions to its body
No observation record of this formation is crossed here. These are the missions the Planetary Data System declares for its body; none is claimed to have observed Hadar Regio.
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/16421
Type definitions: IAU Descriptor Terms, read on October 17, 2026. https://planetarynames.wr.usgs.gov/DescriptorTerms
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