Europlanet Science Congress 2020
Virtual meeting
21 September – 9 October 2020
Europlanet Science Congress 2020
Virtual meeting
21 September – 9 October 2020
EPSC Abstracts
Vol.14, EPSC2020-158, 2020, updated on 08 Oct 2020
https://doi.org/10.5194/epsc2020-158
Europlanet Science Congress 2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Six hundred 1-km retrograde jovian irregular moons

Edward Ashton, Matthew Beaudoin, and Brett Gladman
Edward Ashton et al.
  • University of British Columbia, Physics and Astronomy, Canada (eashton@phas.ubc.ca)

We have searched a 2010 archival data set from the Canada-France-Hawaii Telescope for very small (km-scale) irregular moons of Jupiter in order to constrain the size distribution of these moons down to radii of ~400m, discovering 53 objects which are moving with Jupiter-like on-sky rates and are nearly certainly irregular moons. The four brightest detections, and seven in total, were all then linked to known jovian moons. Extrapolating our characterized detections (those down to magnitude mr=25.7) to the entire retrograde circum-jovian population, we estimate the population of radius > 0.4km moons to be 600 (within a factor of 2).  At the faintest magnitudes we find a relatively shallow luminosity function of exponential index α = 0.29 ± 0.15, corresponding to a differential diameter power law of index q ≈ 2.5.

How to cite: Ashton, E., Beaudoin, M., and Gladman, B.: Six hundred 1-km retrograde jovian irregular moons, Europlanet Science Congress 2020, online, 21 September–9 Oct 2020, EPSC2020-158, https://doi.org/10.5194/epsc2020-158, 2020

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