Tokoyo Fossa (Ryugu)
Data as of 2026-10-23
What it is
- Type
- Fossa, fossae
- IAU definition
Long, narrow depression
- Diameter
- 0.6 km, 134 % of the radius of its body
- Centre
- 50.5° S, 166.2° east (planetocentric latitude, east longitude from 0 to 360°, the IAU convention)
- Name adopted
- December 19, 2018
- Origin of the name
Immortal world of Japanese mythology, eternal, timeless land across the sea or undersea kingdom, where the princess Otohime lives in the fairy tale about the fisherman Urashima.
Quoted in English, as the IAU publishes it.
In Galaxy
Opens its body in the application, the camera turned towards Tokoyo Fossa.
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 Tokoyo Fossa.
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/15796
Type definitions: IAU Descriptor Terms, read on October 17, 2026. https://planetarynames.wr.usgs.gov/DescriptorTerms