Please use this identifier to cite or link to this item: https://research.matf.bg.ac.rs/handle/123456789/1177
Title: The Splitting of Double-component Active Asteroid P/2016 J1 (PANSTARRS)
Authors: Moreno, F.
Pozuelos, F. J.
Novaković, Bojan 
Licandro, J.
Cabrera-Lavers, A.
Bolin, Bryce
Jedicke, Robert
Gladman, Brett J.
Bannister, Michele T.
Gwyn, Stephen D.J.
Vereš, Peter
Chambers, Kenneth
Chastel, Serge
Denneau, Larry
Flewelling, Heather
Huber, Mark
Schunová-Lilly, Eva
Magnier, Eugene
Wainscoat, Richard
Waters, Christopher
Weryk, Robert
Farnocchia, Davide
Micheli, Marco
Affiliations: Astronomy 
Keywords: methods: numerical;minor planets, asteroids: individual (P/2016 J1 (PANSTARRS))
Issue Date: 1-Mar-2017
Journal: Astrophysical Journal Letters
Abstract: 
We present deep imaging observations, orbital dynamics, and dust-tail model analyses of the double-component asteroid P/2016 J1 (J1-A and J1-B). The observations were acquired at the Gran Telescopio Canarias (GTC) and the Canada-France-Hawaii Telescope (CFHT) from mid-March to late July of 2016. A statistical analysis of backward-in-time integrations of the orbits of a large sample of clone objects of P/2016 J1-A and J1-B shows that the minimum separation between them occurred most likely ∼2300 days prior to the current perihelion passage, i.e., during the previous orbit near perihelion. This closest approach was probably linked to a fragmentation event of their parent body. Monte Carlo dust-tail models show that those two components became active simultaneously ∼250 days before the current perihelion, with comparable maximum loss rates of ∼0.7 and ∼0.5 kg s-1, and total ejected masses of 8 ×106 and 6 ×106 kg for fragments J1-A and J1-B, respectively. Consequently, the fragmentation event and the present dust activity are unrelated. The simultaneous activation times of the two components and the fact that the activity lasted 6-9 months or longer, strongly indicate ice sublimation as the most likely mechanism involved in the dust emission process.
URI: https://research.matf.bg.ac.rs/handle/123456789/1177
ISSN: 20418205
DOI: 10.3847/2041-8213/aa6036
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