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Images of asteroid 21 Lutetia: a remnant planetesimal from the early solar system

Sierks, H.; Lamy, P.; Barbieri, C.; Koschny, D.; Rickman, H.; Rodrigo, R.; A'Hearn, M. F.; Angrilli, F.; Barucci, M. A.; Bertaux, J.- L.; Bertini, I.; Besse, S.; Carry, B.; Cremonese, G.; Da Deppo, V.; Davidsson, B.; Debei, S.; De Cecco, M.; De Leon, J.; Ferri, F.; Fornasier, S.; Fulle, M.; Hviid, S. F.; Gaskell, R. W.; Groussin, O.; Gutierrez, P.; Ip, W.; Jorda, L.; Kaasalainen, M.; Keller, H. U.; Knollenberg, J.; Kramm, R.; Kuhrt, E.; Kuppers, M.; Lara, L.; Lazzarin, M.; Leyrat, C.; Moreno, J. J. L.; Magrin, S.; Marchi, S.; Marzari, F.; Massironi, M.; Michalik, H.; Moissl, R.; Naletto, G.; Preusker, F.; Sabau, L.; Sabolo, W.; Scholten, F.; Snodgrass, C.; Thomas, N.; Tubiana, C.; Vernazza, P.; Vincent, J.- B.; Wenzel, K.- P.; Andert, T.; Patzold, M. and Weiss, B. P. (2011). Images of asteroid 21 Lutetia: a remnant planetesimal from the early solar system. Science, 334(6055) pp. 487–490.

DOI (Digital Object Identifier) Link: https://doi.org/10.1126/science.1207325
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Abstract

Images obtained by the Optical, Spectroscopic, and Infrared Remote Imaging System (OSIRIS) cameras onboard the Rosetta spacecraft reveal that asteroid 21 Lutetia has a complex geology and one of the highest asteroid densities measured so far, 3.4 ± 0.3 grams per cubic centimeter. The north pole region is covered by a thick layer of regolith, which is seen to flow in major landslides associated with albedo variation. Its geologically complex surface, ancient surface age, and high density suggest that Lutetia is most likely a primordial planetesimal. This contrasts with smaller asteroids visited by previous spacecraft, which are probably shattered bodies, fragments of larger parents, or reaccumulated rubble piles.

Item Type: Journal Item
Copyright Holders: 2011 The Authors
ISSN: 1095-9203
Keywords: asteroids; astrogeology; infrared imaging; astrotomography; spectrum analysis
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Research Group: Space
Item ID: 43075
Depositing User: Colin Snodgrass
Date Deposited: 27 May 2015 10:59
Last Modified: 07 Dec 2018 10:31
URI: http://oro.open.ac.uk/id/eprint/43075
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