Language:

Episodes of Particle Ejection from the Surface of the Active Asteroid (101955) Bennu

Science (American Association for the Advancement of Science), 2019-12, Vol.366 (6470) [Peer Reviewed Journal]

Copyright Determination: PUBLIC_USE_PERMITTED ;Copyright © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. ;Copyright © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works ;Distributed under a Creative Commons Attribution 4.0 International License ;ISSN: 0036-8075 ;EISSN: 1095-9203 ;DOI: 10.1126/science.aay3544 ;PMID: 31806784

Digital Resources/Online E-Resources

Citations Cited by

Actions
1. Add to My Research
2. Remove from My Research
3. E-mail
4. Print
5. Permalink
6. Citation
7. EasyBib
8. EndNote
9. RefWorks
10. Delicious
11. Export RIS
12. Export BibTeX

Title:
Episodes of Particle Ejection from the Surface of the Active Asteroid (101955) Bennu
Author: Lauretta, D. S. ; Hergenrother, C. W. ; Chesley, S. R. ; Leonard, J. M. ; Pelgrift, J. Y. ; Adam, C. D. ; Asad, M. Al ; Antreasian, P. G. ; Ballouz, R.-L. ; Becker, K. J. ; Bennett, C. A. ; Bos, B. J. ; Bottke, W. F. ; Brozovi, M. ; Campins, H. ; Jr, H. C. Connolly ; Daly, M. G. ; Davis, A. B. ; León, J. de ; DellaGiustina, D. N. ; d’Aubigny, C. Y. Drouet ; Dworkin, J. P. ; Emery, J. P. ; Farnocchia, D. ; Glavin, D. P. ; Golish, D. R. ; Hartzell, C. M. ; Jacobson, R. A. ; Jawin, E. R. ; Jenniskens, P. ; Jr, J. N. Kidd ; Lessac-Chenen, E. J. ; Li, J.-Y. ; Libourel, G. ; Licandro, J. ; Liounis, A. J. ; Maleszewski, C. K. ; Manzoni, C. ; May, B. ; McCarthy, L. K. ; McMahon, J. W. ; Michel, P. ; Molaro, J. L. ; Moreau, M. C. ; Nelson, D. S. ; Jr, W. M. Owen ; Rizk, B. ; Roper, H. L. ; Rozitis, B. ; Sahr, E. M. ; Scheeres, D. J. ; Seabrook, J. A. ; Selznick, S. H. ; Takahashi, Y. ; Thuillet, F. ; Tricarico, P. ; Vokrouhlick, D. ; Wolner, C. W. V.
Subjects: Acceleration ; Albedo ; Apollo asteroids ; Asteroid destruction ; Asteroid detection ; Asteroid missions ; Asteroids ; Astrophysics ; Cameras ; Dehydration ; Disruption ; Earth ; Earth and Planetary Astrophysics ; Ejection ; Fracturing ; Geology ; Initial conditions ; Interplanetary space ; Lofting ; Lunar And Planetary Science And Exploration ; Meteors & meteorites ; Navigation ; Object recognition ; Orbit determination ; Origins ; Particle trajectories ; Photometry ; Regolith ; Sciences of the Universe ; Security ; Solar system ; Space rendezvous ; Spacecraft ; Spectra ; Sublimation ; Thermal stress
Is Part Of: Science (American Association for the Advancement of Science), 2019-12, Vol.366 (6470)
Description: Active asteroids are those that show evidence of ongoing mass loss. We report repeated instances of particle ejection from the surface of (101955) Bennu, demonstrating that it is an active asteroid. The ejection events were imaged by the OSIRIS-REx (Origins, Spectral Interpretation, Resource Identification, and Securityâ€“Regolith Explorer) spacecraft. For the three largest observed events, we estimated the ejected particle velocities and sizes, event times, source regions, and energies. We also determined the trajectories and photometric properties of several gravitationally bound particles that orbited temporarily in the Bennu environment. We consider multiple hypotheses for the mechanisms that lead to particle ejection for the largest events, including rotational disruption, electrostatic lofting, ice sublimation, phyllosilicate dehydration, meteoroid impacts, thermal stress fracturing, and secondary impacts.
Publisher: Goddard Space Flight Center: American Association for the Advancement of Science
Language: English
Identifier: ISSN: 0036-8075
EISSN: 1095-9203
DOI: 10.1126/science.aay3544
PMID: 31806784
Source: NASA Technical Reports Server

Back to results list


INSPIRE LIBRARY - TON DUC THANG UNIVERSITY	(84-028) 37 755 057	Feedback
19 Nguyen Huu Tho St. Dist.7, HCM	thuvien@tdtu.edu.vn	Feedback

Episodes of Particle Ejection from the Surface of the Active Asteroid (101955) Bennu

Searching Remote Databases, Please Wait