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Multiple Outbursts of Asteroid (6478) Gault

  • Quanzhi Ye
  • , Michael S.P. Kelley
  • , Dennis Bodewits
  • , Bryce Bolin
  • , Lynne Jones
  • , Zhong Yi Lin
  • , Eric C. Bellm
  • , Richard Dekany
  • , Dmitry A. Duev
  • , Steven Groom
  • , George Helou
  • , Shrinivas R. Kulkarni
  • , Thomas Kupfer
  • , Frank J. Masci
  • , Thomas A. Prince
  • , Maayane T. Soumagnac

Research output: Contribution to journal › Article › peer-review

Abstract

Main-belt asteroid (6478) Gault unexpectedly sprouted two tails in late 2018 and early 2019, identifying it as a new active asteroid. Here we present observations obtained by the 1.2 m Zwicky Transient Facility survey telescope that provide detailed time-series coverage of the onset and evolution of Gault's activity. Gault exhibited two brightening events, with the first one starting on 2018 October 18 ±5 days and a second one starting on 2018 December 24 ±1 days. The amounts of mass released are 2 ×10 7 kg and 1 ×10 6 kg, respectively. Based on photometric measurements, each event persisted for about a month.

Original languageEnglish
Article numberL16
Number of pages8
JournalAstrophysical Journal Letters
Volume874
Issue number2
DOIs
StatePublished - 1 Apr 2019

Keywords

  • comets: individual ((6478) Gault)
  • minor planets, asteroids: individual ((6478) Gault)

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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