Analysis of the First Disk-resolved Images of Ceres from Ultraviolet Observations with the Hubble Space Telescope

  title={Analysis of the First Disk-resolved Images of Ceres from Ultraviolet Observations with the Hubble Space Telescope},
  author={Joel Wm. Parker and Sharon A. Stern and Peter C. Thomas and Michel C. Festou and William J. Merline and Elliot Young and Richard P. Binzel and Larry Allen Lebofsky},
  journal={The Astronomical Journal},
We present Hubble Space Telescope Faint Object Camera observations of the asteroid 1 Ceres at near-, mid-, and far-UV wavelengths (λ = 3636, 2795, and 1621 A, respectively) obtained on 1995 June 25. The disk of Ceres is well resolved for the first time, at a scale of ~50 km. We report the detection of a large, ~250 km diameter surface feature for which we propose the name "Piazzi"; however, it is presently uncertain whether this feature is due to a crater, albedo variegation, or other effect… Expand
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