The Size Distribution of Trans-Neptunian Bodies

  title={The Size Distribution of Trans-Neptunian Bodies},
  author={Gary M. Bernstein and David E. Trilling and R. L. Allen and M. E. Brown and Matthew J. Holman and Renu Malhotra},
  journal={The Astronomical Journal},
  pages={1364 - 1390}
We search 0.02 deg2 of the invariable plane for trans-Neptunian objects (TNOs) 25 AU or more distant using the Advanced Camera for Surveys (ACS) aboard the Hubble Space Telescope. With 22 ks per pointing, the search is more than 50% complete for m606W ≤ 29.2. Three new objects are discovered, the faintest with mean magnitude m = 28.3 (diameter ≈25 km), which is 3 mag fainter than any previously well-measured solar system body. Each new discovery is verified with a follow-up 18 ks observation… 


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