2018/05/28 by Jessica Agarwal, Michael Mommert, M. Mommert · 4 citations
Physics and Astronomy · #Asteroid #Astro and Planetary Science #Astronomy #Astrophysics #Context (archaeology) #Geology #Light curve #Photometry (optics) #Physics #Planetary Science and Exploration #Population #Stars #Stellar, planetary, and galactic studies #Sublimation (psychology) #astro-ph.EP
paper · pdf · doi:10.1051/0004-6361/201832761
published in Astronomy and Astrophysics 616, A54 (EDP Sciences) · 7 pages, 7 figures, 1 table, accepted for publication in A&A
arxiv created 2018/05/28 · openalex publication_date 2018/05/28 · arxiv updated 2018/08/15 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Context. The dust emission from active asteroids is likely driven by collisions, fast rotation, sublimation of embedded ice, and combinations of these. Characterising these processes leads to a better understanding of their respective influence on the evolution of the asteroid population. Aims. We study the role of fast rotation in the active asteroid 358P (P 2012/T1). Methods. We obtained two nights of deep imaging of 358P with SOAR/Goodman and VLT/FORS2. We derived the rotational light curve from time-resolved photometry and searched for large fragments and debris >8 mm in a stacked, ultra-deep image. Results. The nucleus has an absolute magnitude of m R = 19.68, corresponding to a diameter of 530 m for standard assumptions on the albedo and phase function of a C-type asteroid. We do not detect fragments or debris that would require fast rotation to reduce surface gravity to facilitate their escape. The 10-h light curve does not show an unambiguous periodicity.