Argo Chasma (Charon)
Data as of 2026-10-23
What it is
- Type
- Chasma, chasmata
- IAU definition
A deep, elongated, steep-sided depression
- Diameter
- 355 km, 59 % of the radius of its body
- Centre
- 27.8° N, 80.4° east (planetocentric latitude, east longitude from 0 to 360°, the IAU convention)
- Name adopted
- April 11, 2018
- Origin of the name
Greek mythological ship sailed by Jason and his crew, the Argonauts, from Iolcos to Colchis to retrieve the Golden Fleece, described in the "Argonautica" epic poem by Apollonius Rhodius (3rd cen. BC).
Quoted in English, as the IAU publishes it.
In Galaxy
Opens its body in the application, the camera turned towards Argo Chasma.
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 Argo Chasma.
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/15734
Type definitions: IAU Descriptor Terms, read on October 17, 2026. https://planetarynames.wr.usgs.gov/DescriptorTerms