Physical Characterization of Active Asteroid (6478) Gault

  title={Physical Characterization of Active Asteroid (6478) Gault},
  author={Juan A. Sanchez and Vishnu Reddy and Audrey Thirouin and Edward L. Wright and Tyler R. Linder and Theodore Kareta and Benjamin N. L. Sharkey},
  journal={The Astrophysical Journal Letters},
Main belt asteroid (6478) Gault has been dynamically linked with two overlapping asteroid families: Phocaea, dominated by S-type asteroids, and Tamara, dominated by low-albedo C-types. This object has recently become an interesting case for study after images obtained in late 2018 revealed that it was active and displaying a comet-like tail. Previous authors have proposed that the most likely scenarios to explain the observed activity on Gault were rotational excitation or merger of near… 
(6478) Gault: physical characterization of an active main-belt asteroid
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Active Main-belt Asteroid (6478) Gault: Constraint on Its Cohesive Strength and the Fate of Ejected Particles in the Solar System
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We observed the episodically active asteroid (6478) Gault in 2020 with multiple telescopes in Asia and North America and found that it is no longer active after its recent outbursts at the end of
Activity of (6478) Gault during 2019 January 13–March 28
We present the results of photometric observations of active asteroid (6478) Gault performed at heliocentric distances from 2.46 to 2.30 au and geocentric distances from 1.79 to 1.42 au between


Multiple Outbursts of Asteroid (6478) Gault
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
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We report the discovery of a new asteroid family among the dark asteroids residing in the Phocaea region the Tamara family. We make use of available physical data to separate asteroids in the region
Episodically Active Asteroid 6478 Gault
We present imaging and spectroscopic observations of 6478 Gault, a ∼6 km diameter inner main-belt asteroid currently exhibiting strong, comet-like characteristics. Three distinct tails indicate that
The Sporadic Activity of (6478) Gault: A YORP-driven Event?
On 2019 January 5 a streamer associated with the 4–10 km main belt asteroid (6478) Gault was detected by the ATLAS sky survey, a rare discovery of activity around a main belt asteroid. Archival data
Potentially hazardous asteroids (PHAs) represent a unique opportunity for physical characterization during their close approaches to Earth. The proximity of these asteroids makes them accessible for
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We present archival observations demonstrating that main belt asteroid (6478) Gault has an extensive history of comet-like activity. Outbursts have taken place during multiple epochs since 2013 and
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Abstract It has become common practice in studies of the thermal emission from near-Earth asteroids to employ thermal models developed on the basis of infrared observations of large, main-belt