Published 2011
| Version v1
Journal article
Images of Asteroid 21 Lutetia: A Remnant Planetesimal from the Early Solar System
Creators
- Sierks, Holger
- Lamy, Philippe
- Barbieri, Cesare
- Koschny, Detlef
- Rickman, Hans
- Rodrigo, Rafael
- A'Hearn, Michael F.
- Angrilli, F.
- Barucci, M. Antonella
- Bertaux, Jean-Loup
- Bertini, Ivano
- Besse, Sebastien
- Carry, B.
- Cremonese, Gabriele
- da Deppo, Vania
- Davidsson, Björn
- Debei, Stefano
- de Cecco, Mariolino
- de Leon, J.
- Ferri, Francesca
- Fornasier, Sonia
- Fulle, Marco
- Hviid, S. F.
- Gaskell, Robert W.
- Groussin, Olivier
- Gutiérrez, Pedro J.
- Ip, Wing-Huen
- Jorda, Laurent
- Kaasalainen, M.
- Keller, Horst Uwe
- Knollenberg, Jörg
- Kramm, Rainer
- Kührt, Ekkehard
- Küppers, Michael
- Lara, Luisa M.
- Lazzarin, Monica
- Leyrat, C.
- Lopez Moreno, José J.
- Magrin, Sara
- Marchi, S.
- Marzari, Francesco
- Massironi, Matteo
- Michalik, Harald
- Moissl, R.
- Naletto, Giampiero
- Preusker, Frank
- Sabau, L.
- Sabolo, W.
- Scholten, Frank
- Snodgrass, C.
- Thomas, Nicolas
- Tubiana, Cecilia
- Vernazza, P.
- Vincent, Jean-Baptiste
- Wenzel, K.-P.
- Andert, T.
- Pätzold, M.
- Weiss, B. P.
Contributors
Others:
- Max-Planck-Institut für Sonnensystemforschung (MPS) ; Max-Planck-Gesellschaft
- Laboratoire d'Astrophysique de Marseille (LAM) ; Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)
- Centro di Ateneo di Studi e Attività Spaziali "Giuseppe Colombo" (CISAS) ; Università degli Studi di Padova = University of Padua (Unipd)
- Dipartimento di Astronomia [Padova] ; Università degli Studi di Padova = University of Padua (Unipd)
- European Space Research and Technology Centre (ESTEC) ; European Space Agency (ESA)
- Department of Physics and Astronomy [Uppsala] ; Uppsala University
- Instituto de Astrofísica de Andalucía (IAA) ; Consejo Superior de Investigaciones Científicas [Madrid] (CSIC)
- Department of Astronomy [College Park] ; University of Maryland [College Park] ; University of Maryland System-University of Maryland System
- Department of Industrial Engineering [Padova] ; Università degli Studi di Padova = University of Padua (Unipd)
- Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA) ; Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris ; Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)
- Observatoire de Paris - Site de Paris (OP) ; Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris ; Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)
- PLANETO - LATMOS ; Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) ; Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)
- European Space Astronomy Centre (ESAC) ; European Space Agency (ESA)
- INAF - Osservatorio Astronomico di Padova (OAPD) ; Istituto Nazionale di Astrofisica (INAF)
- INAF - Osservatorio Astronomico di Trieste (OAT) ; Istituto Nazionale di Astrofisica (INAF)
- Planetary Science Institute [Tucson] (PSI)
- Institute of Space Science [Taiwan] ; National Central University [Taiwan] (NCU)
- Department of Mathematics [Tampere] ; Tampere University of Technology [Tampere] (TUT)
- Institut für Geophysik und Extraterrestrische Physik [Braunschweig] (IGEP) ; Technische Universität Braunschweig = Technical University of Braunschweig [Braunschweig]
- DLR Institut für Planetenforschung ; Deutsches Zentrum für Luft- und Raumfahrt [Berlin] (DLR)
- Observatoire de la Côte d'Azur (OCA) ; Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)
- Dipartimento di Fisica [Padova] ; Università degli Studi di Padova = University of Padua (Unipd)
- Institut für Datentechnik und Kommunikationsnetze ; Technische Universität Braunschweig = Technical University of Braunschweig [Braunschweig]
- Instituto Nacional de Técnica Aeroespacial (INTA)
- Physikalisches Institut [Bern] ; Universität Bern [Bern] (UNIBE)
- Institut für Raumfahrttechnik ; Universität der Bundeswehr München [Neubiberg]
- Universität zu Köln = University of Cologne
- Université Sorbonne Paris Cité (USPC)
Description
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.
Abstract
International audienceAdditional details
Identifiers
- URL
- https://hal.archives-ouvertes.fr/hal-00641442
- URN
- urn:oai:HAL:hal-00641442v1
Origin repository
- Origin repository
- UNICA