Phoebe: A Surface Dominated by Water

Wesley C. Fraser, Michael E. Brown

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)
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The Saturnian irregular satellite, Phoebe, can be broadly described as a water-rich rock. This object, which presumably originated from the same primordial population shared by the dynamically excited Kuiper Belt Objects (KBOs), has received high-resolution spectral imaging during the Cassini flyby. We present a new analysis of the Visual Infrared Mapping Spectrometer observations of Phoebe, which critically, includes a geometry correction routine that enables pixel-by-pixel mapping of visible and infrared spectral cubes directly onto the Phoebe shape model, even when an image exhibits significant trailing errors. The result of our re-analysis is a successful match of 46 images, producing spectral maps covering the majority of Phoebe’s surface, roughly a third of which is imaged by high-resolution observations (
Original languageEnglish
Pages (from-to)23
JournalAstronomical Journal
Issue number1
Publication statusPublished - 22 Jun 2018


  • methods: data analysis
  • planets and satellites: individual: Phoebe
  • planets and satellites: surfaces


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