Abstract

Abstract We use data from the first two years of the public survey of the Zwicky Transient Facility to analyze colors of proposed Jupiter Trojan asteroid families. The well studied Eurybates cluster remains the only family with a significant number of color measurements, and we find that the average colors of this family are less red than typical Jupiter Trojans, in agreement with smaller studies. The limited number of objects detected in this and other surveys for the other families makes their colors continue to be uncertain.

Highlights

  • Within the Jupiter Trojan population, the asteroid (3548) Eurybates is unique in having a large dynamical family associated with it (Broz & Rozehnal 2011; Nesvornyet al. 2015; Vinogradova 2015; Rozehnal et al 2016)

  • From limited photometry and spectrophotometry, it has been known that Eurybates and – at least the brightest – family members are generally slightly more blue than typical Jupiter Trojans (Fornasier et al 2007; De Luise et al 2010)

  • Schemel & Brown (2021) developed a method to take the sparse photometry provided by the Zwicky Transient Facility public survey (Bellm et al 2019) and fit for absolute magnitude, g −r color, rotation amplitude, and phase function, even in the face of an unknown rotation period

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Summary

Introduction

Within the Jupiter Trojan population, the asteroid (3548) Eurybates is unique in having a large dynamical family associated with it (Broz & Rozehnal 2011; Nesvornyet al. 2015; Vinogradova 2015; Rozehnal et al 2016). Within the Jupiter Trojan population, the asteroid (3548) Eurybates is unique in having a large dynamical family associated with it From limited photometry and spectrophotometry, it has been known that Eurybates and – at least the brightest – family members are generally slightly more blue than typical Jupiter Trojans (Fornasier et al 2007; De Luise et al 2010).

Results
Conclusion

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