Search for Activity in 3200 Phaethon

Astronomy and Astrophysics – Astronomy

Scientific paper

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Comets: General, Meteors, Meteoroids, Minor Planets, Asteroids

Scientific paper

We present deep optical imaging of Geminid meteor stream parent 3200 Phaethon taken in search of low-level cometary activity (i.e., coma or dust trail). Although no unambiguous cometary behavior was observed, we find an upper limit on the object's cometary mass-loss rate of M˙lim~0.01 kg s-1. The corresponding active fraction (the fraction of the surface area that could consist of freely sublimating water ice) is f<=7×10-6, at least 2 orders of magnitude smaller than other known comets.

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