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| "Galileo's Encounter with 951 Gaspra: Overview" | 44th Lunar and Planetary Science Conference |
The date is based on the oldest found to date in , and is thought to be the date of the formation of the first solid material in the collapsing nebula.
28| SSH 8-1, CiteID 1136, DOI 10 | "Orbits and Masses of the Satellites of the Dwarf Planet Haumea 2003 EL61 " |
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| Carry, Benoit; Snodgrass, Colin; Lacerda, Pedro; Hainaut, Olivier; Dumas, Christophe 16 July 2012 | "Voyager's Eleventh Discovery of a Satellite of Uranus and Photometry and the First Size Measurements of Nine Satellites" |
| Sukyoung Yi; Pierre Demarque; Yong-Cheol Kim; Young-Wook Lee; Chang H | "Orbits and Masses of the Satellites of the Dwarf Planet Haumea 2003 EL61 " |
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| Levison, Martin J Duncan 1997 | ; Saturn's moon Phoebe as a captured body from the outer Solar System, Nature, Vol |