Oxo /ˈɒʃoʊ/ is a small impact crater on the dwarf planet Ceres. Located in Ceres's northern hemisphere, it is the second-brightest feature on Ceres, after Haulani Crater. The crater was named after the Candomblé (and Yoruba) god of agriculture.[2]
.jpg) Oxo imaged by Dawn from LAMO | |
| Feature type | Impact crater |
|---|---|
| Location | Ceres |
| Coordinates | 42°13′N 359°36′E / 42.21°N 359.6°E[1] |
| Diameter | 10 kilometres (6.2 mi) |
| Depth | 4,802 metres (15,755 ft) |
| Discoverer | Dawn |
| Eponym | After the Candomblé god of agriculture |
Formation
editOxo is a very young crater, having been formed only 190+100
−70 Ka (thousand years) ago,[3] and it is entirely located within the older, heavily degraded crater Duginavi.[4] Despite its relatively small size, the impact that created Oxo penetrated more deeply into Ceres than many larger craters, reaching a depth of 4,802 metres, and it excavated significant amounts of bright material that was distributed unevenly throughout the crater's ejecta blanket.[5]
Physical features
editAs a result of Oxo's young age it has a very sharp crater rim and a well-defined ejecta blanket. It is also home to many large boulders; boulders produced by older craters have largely been destroyed by micrometeoroid impacts.[6]
Oxo is actively undergoing the sublimation of water ice, due to its young age.[3] This ice is located along the crater's southern wall.[7]
See also
editReferences
editCitations
edit- ^ "Planetary Names: Crater, craters: Oxo on Ceres". planetarynames.wr.usgs.gov. Retrieved 2021-09-15.
- ^ "Planetary Names: Crater, craters: Oxo on Ceres". Gazetteer of Planetary Nomenclature. 21 September 2015.
- ^ a b Nathues et al. 2017, p. 1
- ^ Nathues et al. 2017, p. 9
- ^ Nathues et al. 2017, pp. 3–4
- ^ Nathues et al. 2017, p. 3
- ^ Formisano et al. 2018, p. 2
Bibliography
edit- Formisano, Michelangelo; Federico, Constanzo; Magni, Giacomo; Raponi, Andrea; et al. (10 December 2018). "Surface Temperatures and Water Ice Sublimation Rate of Oxo Crater: A Comparison With Juling Crater". Journal of Geophysical Research: Planets. 124 (1). American Geophysical Union: 2–13. doi:10.1029/2018JE005839. S2CID 133821860.
- Nathues, Andreas; Platz, Thomas; Hoffmann, Susanne M.; Thangjam, Guneshwar; et al. (4 August 2017). "Oxo Crater on (1) Ceres: Geological History and the Role of Water-ice". The Astronomical Journal. 154 (3). IOP Publishing: 84. doi:10.3847/1538-3881/aa7a04. hdl:10150/625818. S2CID 55137098.
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