HST Snapshot Images of Asteroids

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HST Snapshot Images of Asteroids
Alex Storrs Khaldoun Makhoul Mike Gaffey, U. of
N. Dakota Rob Landis, JPL Faith Vilas, JSC and
NASA HQ Ed Wells, CSC/STScI Chuck Wood Ben
Zellner, Ga. Southern Univ.
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1 Ceres, F439W
0.5 arcsec
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F673N ratio
F791W
0.5 arcsec
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45 Eugenia, F439W
0.5 arcsec
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87 Sylvia, F439W
0.5 arcsec
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107 Camilla, F439W
0.5 arcsec
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Conclusions

• Resolve the disks of large main belt asteroids
• Easily detect companions
• Compare colors to primaries
• some significant differences
• Restore images at high resolution
• 1 Ceres is noticeably oblate
• Map distribution of volatiles, minerals on
  surface
• 1 Ceres has a region with depressed 0.7 mm
  reflection