An Oort cloud origin for the high-inclination, high-perihelion Centaurs

Abstract

We analyse the origin of three Centaurs with perihelia in the range 15 AU to 30 AU, inclinations above 70 deg and semi-major axes shorter than 100 AU. Based on long-term numerical simulations we conclude that these objects most likely originate from the Oort cloud rather than the Kuiper Belt or Scattered Disc. We estimate that there are currently between 1 and 200 of these high-inclination, high-perihelion Centaurs with absolute magnitude H<8.

Accepted for publication in MNRAS

References in corpus (3)

• The Formation of the Oort Cloud in Open Cluster Environments
• Reassessing the formation of the inner Oort cloud in an embedded star cluster
• 2006 SQ372: A Likely Long-Period Comet from the Inner Oort Cloud

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