The operational environment and rotational acceleration of asteroid (101955) Bennu from OSIRIS-REx observations
dc.contributor.author | Hergenrother, Carl | |
dc.contributor.author | Maleszewski, C K | |
dc.contributor.author | Nolan, M C | |
dc.contributor.author | Li, J Y | |
dc.contributor.author | Drouet d’Aubigny, C. Y. | |
dc.contributor.author | Shelly, F C | |
dc.contributor.author | Howell, E S | |
dc.contributor.author | Kareta, T R | |
dc.contributor.author | Izawa, M R | |
dc.contributor.author | Barucci, M. A. | |
dc.contributor.author | Ireland, Trevor | |
dc.date.accessioned | 2020-02-17T22:47:34Z | |
dc.date.available | 2020-02-17T22:47:34Z | |
dc.date.issued | 2019-03-19 | |
dc.date.updated | 2019-11-25T07:33:38Z | |
dc.description.abstract | During its approach to asteroid (101955) Bennu, NASA's Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer (OSIRIS-REx) spacecraft surveyed Bennu's immediate environment, photometric properties, and rotation state. Discovery of a dusty environment, a natural satellite, or unexpected asteroid characteristics would have had consequences for the mission's safety and observation strategy. Here we show that spacecraft observations during this period were highly sensitive to satellites (sub-meter scale) but reveal none, although later navigational images indicate that further investigation is needed. We constrain average dust production in September 2018 from Bennu's surface to an upper limit of 150 g s(-1) averaged over 34 min. Bennu's disk-integrated photometric phase function validates measurements from the pre-encounter astronomical campaign. We demonstrate that Bennu's rotation rate is accelerating continuously at 3.63 +/- 0.52 x 10(-6) degrees day(-2), likely due to the Yarkovsky-O'Keefe-Radzievskii-Paddack (YORP) effect, with evolutionary implications. | en_AU |
dc.description.sponsorship | This material is based upon work supported by NASA under Contract NNM10AA11C issued through the New Frontiers Program. This work made use of sbpy (http://sbpy. org), a community-driven Python package for small-body planetary astronomy supported by NASA PDART Grant No. 80NSSC18K0987. A portion of this research was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration. M.A.B. and S.F. acknowledge financial support from CNES. | en_AU |
dc.format.extent | 10 pages | en_AU |
dc.format.mimetype | application/pdf | en_AU |
dc.identifier.uri | http://hdl.handle.net/1885/201731 | |
dc.language.iso | en_AU | en_AU |
dc.publisher | Nature Research (part of Springer Nature) | en_AU |
dc.rights | © The Author(s) 2019 | en_AU |
dc.rights.license | This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/ licenses/by/4.0/ | en_AU |
dc.rights.uri | http://creativecommons.org/ licenses/by/4.0/ | en_AU |
dc.source | Nature Communications | en_AU |
dc.subject | Asteroids, comets and Kuiper belt, Rings and moons | en_AU |
dc.title | The operational environment and rotational acceleration of asteroid (101955) Bennu from OSIRIS-REx observations | en_AU |
dc.type | Journal article | en_AU |
dcterms.accessRights | Open Access | en_AU |
dcterms.dateAccepted | 2019-02-26 | |
local.bibliographicCitation.startpage | 1291 | en_AU |
local.contributor.affiliation | Hergenrother, Carl, University of Arizona | en_AU |
local.contributor.affiliation | Maleszewski, C K, University of Arizona | en_AU |
local.contributor.affiliation | Nolan, M C, University of Arizona | en_AU |
local.contributor.affiliation | Li, J Y, Planetary Science Institute | en_AU |
local.contributor.affiliation | Drouet d’Aubigny, C. Y. , University of Arizona | en_AU |
local.contributor.affiliation | Shelly, F C, University of Arizona | en_AU |
local.contributor.affiliation | Howell, E S, University of Arizona | en_AU |
local.contributor.affiliation | Kareta, T R, University of Arizona | en_AU |
local.contributor.affiliation | Izawa, M R, Okayama University | en_AU |
local.contributor.affiliation | Barucci, M. A., Sorbonne Université | en_AU |
local.contributor.affiliation | Ireland, Trevor, College of Science, The Australian National University | en_AU |
local.contributor.authoremail | repository.admin@anu.edu.au | en_AU |
local.contributor.authoruid | Ireland, Trevor, u8205445 | en_AU |
local.description.notes | Imported from ARIES | en_AU |
local.identifier.absfor | 040302 - Extraterrestrial Geology | en_AU |
local.identifier.absseo | 970104 - Expanding Knowledge in the Earth Sciences | en_AU |
local.identifier.ariespublication | u3102795xPUB2098 | en_AU |
local.identifier.citationvolume | 10 | en_AU |
local.identifier.doi | 10.1038/s41467-019-09213-x | en_AU |
local.identifier.essn | 2041-1723 | en_AU |
local.identifier.thomsonID | 4.61558E+11 | |
local.identifier.uidSubmittedBy | u3102795 | en_AU |
local.publisher.url | https://www.nature.com/ | en_AU |
local.type.status | Published Version | en_AU |