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  Nucleus of active asteroid 358P/Pan-STARRS (P/2012 T1)

Agarwal, J., & Mommert, M. (2018). Nucleus of active asteroid 358P/Pan-STARRS (P/2012 T1). Astronomy and Astrophysics, 616: A54. doi:10.1051/0004-6361/201832761.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-F5B7-C Version Permalink: http://hdl.handle.net/21.11116/0000-0007-06F6-D
Genre: Journal Article

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 Creators:
Agarwal, Jessica1, Author              
Mommert, M., Author
Affiliations:
1Department Planets and Comets, Max Planck Institute for Solar System Research, Max Planck Society, ou_1832288              

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Free keywords: minor planets / asteroids: individual: 358P
 MPIS_PROJECTS: Ground-based Obs.
 Abstract: 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 mR = 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.

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Language(s): eng - English
 Dates: 2018-08-222018
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1051/0004-6361/201832761
 Degree: -

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Title: Astronomy and Astrophysics
  Other : Astron. Astrophys.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Berlin : Springer-Verlag
Pages: - Volume / Issue: 616 Sequence Number: A54 Start / End Page: - Identifier: ISSN: 0004-6361
CoNE: https://pure.mpg.de/cone/journals/resource/954922828219_1