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Keywords:

  • Kuiper Belt;
  • planets and satellites: individual: (60558) Echeclus;
  • planets and satellites: individual: 2000 FZ53;
  • planets and satellites: individual: 2000 GM137;
  • planets and satellites: individual: (29981) 1999 TD10;
  • planets and satellites: individual: (28978) Ixion

ABSTRACT

We have searched for evidence of a dust coma around three Centaurs [(60558) Echeclus (or 174P/Echeclus), 2000 FZ53 and 2000 GM137] and two trans-Neptunian objects [(28978) Ixion and (29981) 1999 TD10]. Despite the recent discovery of a coma around (60558) Echeclus, none of these objects, observed with a 3.5- and an 8-m telescope, presents any evidence of cometary activity at the time of observation. Upper limits for the Afρ parameters and dust production rates are presented.