Asteroids 2867 Steins and 21 Lutetia: Surface Composition from Far Infrared Observations with the Spitzer Space Telescope
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The Cratering History of Asteroid (21) Lutetia
Planetary and Space Science 66 (2012) 87–95 Contents lists available at SciVerse ScienceDirect Planetary and Space Science journal homepage: www.elsevier.com/locate/pss The cratering history of asteroid (21) Lutetia S. Marchi a,n, M. Massironi b, J.-B. Vincent c, A. Morbidelli a, S. Mottola d, F. Marzari e,M.Kuppers¨ f, S. Besse g, N. Thomas h, C. Barbieri i, G. Naletto j, H. Sierks c a Departement Cassiope´e, Universite de Nice – Sophia Antipolis, Observatoire de la Coteˆ d’Azur, CNRS, Nice, France b Department of Geosciences, Padova University, Italy c Max Planck Institute for Solar System Research, Lindau, Germany d Institut fur¨ Planetenforschung, DLR-Berlin, Germany e Department of Physics, Padova University, Italy f ESA-ESAC, Villanueva de la Can˜ada, Madrid, Spain g Laboratoire d’Astrophysique de Marseille, France h Physikalisches Institut, University of Bern, Switzerland i Department of Astronomy, Padova University, Italy j Department of Information Engineering, Padova University, Italy article info abstract Article history: The European Space Agency’s Rosetta spacecraft passed by the main belt asteroid (21) Lutetia on 10th Received 1 July 2011 July 2010. With its 100 km size, Lutetia is one of the largest asteroids ever imaged by a spacecraft. Received in revised form During the flyby, the on-board OSIRIS imaging system acquired spectacular images of Lutetia’s northern 23 October 2011 hemisphere revealing a complex surface scarred by numerous impact craters, reaching the maximum Accepted 26 October 2011 dimension of about 55 km. Available online 7 November 2011 In this paper, we assess the cratering history of the asteroid. -
(21) Lutetia: Shape and Flyby Geometry Benoit Carry, Mikko Kaasalainen, Cedric Leyrat, William J
Physical properties of ESA Rosetta target asteroid (21) Lutetia: Shape and flyby geometry Benoit Carry, Mikko Kaasalainen, Cedric Leyrat, William J. Merline, Jack D. Drummond, Al Conrad, Hal A. Weaver, Peter M. Tamblyn, Clark R. Chapman, Christophe Dumas, et al. To cite this version: Benoit Carry, Mikko Kaasalainen, Cedric Leyrat, William J. Merline, Jack D. Drummond, et al.. Physical properties of ESA Rosetta target asteroid (21) Lutetia: Shape and flyby geometry. Astronomy and Astrophysics - A&A, EDP Sciences, 2010, 523 (A94), 19 p. 10.1051/0004-6361/201015074. hal- 00618654 HAL Id: hal-00618654 https://hal.archives-ouvertes.fr/hal-00618654 Submitted on 14 Apr 2021 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. A&A 523, A94 (2010) Astronomy DOI: 10.1051/0004-6361/201015074 & c ESO 2010 Astrophysics Physical properties of the ESA Rosetta target asteroid (21) Lutetia II. Shape and flyby geometry, B. Carry1,2, M. Kaasalainen3,C.Leyrat1, W. J. Merline4,J.D.Drummond5,A.Conrad6,H.A.Weaver7, P. M. Tamblyn 4,C.R.Chapman4,C.Dumas8,F.Colas9, J. C. Christou10, E. Dotto11,D.Perna1,11,12, S. Fornasier1,2, L. -
Calcium Isotopes in Natural and Experimental Carbonated Silicate Melts
Western University Scholarship@Western Electronic Thesis and Dissertation Repository 2-27-2018 2:30 PM Calcium Isotopes in Natural and Experimental Carbonated Silicate Melts Matthew Maloney The University of Western Ontario Supervisor Bouvier, Audrey The University of Western Ontario Co-Supervisor Withers, Tony The University of Western Ontario Graduate Program in Geology A thesis submitted in partial fulfillment of the equirr ements for the degree in Master of Science © Matthew Maloney 2018 Follow this and additional works at: https://ir.lib.uwo.ca/etd Part of the Geochemistry Commons Recommended Citation Maloney, Matthew, "Calcium Isotopes in Natural and Experimental Carbonated Silicate Melts" (2018). Electronic Thesis and Dissertation Repository. 5256. https://ir.lib.uwo.ca/etd/5256 This Dissertation/Thesis is brought to you for free and open access by Scholarship@Western. It has been accepted for inclusion in Electronic Thesis and Dissertation Repository by an authorized administrator of Scholarship@Western. For more information, please contact [email protected]. Abstract The calcium stable isotopic compositions of mantle-sourced rocks and minerals were investigated to better understand the carbon cycle in the Earth’s mantle. Bulk carbonatites and kimberlites were analyzed to identify a geochemical signature of carbonatite magmatism, while inter-mineral fractionation was measured in co-existing Ca-bearing carbonate and silicate minerals. Bulk samples show a range of composition deviating from the bulk silicate Earth δ44/40Ca composition indicating signatures of magmatic processes or marine carbonate addition 44/40 to source materials. Δ Cacarbonate-silicate values range from -0.55‰ to +1.82‰ and positively correlate with Ca/Mg ratios in pyroxenes. -
The Rosetta Fly-By at (21) Lutetia – Ten Weeks After Closest Approach
EPSC Abstracts Vol. 5, EPSC2010-18, 2010 European Planetary Science Congress 2010 c Author(s) 2010 The Rosetta fly-by at (21) Lutetia – ten weeks after closest approach R. Schulz (1), A. Accomazzo (2), M. Küppers (3), G. Schwehm (3), K. Wirth (3) (1) Research and Scientific Support Department, ESA/ESTEC, Noordwijk, The Netherlands (2) European Space Operations Centre, ESA/ESOC, Darmstadt, Germany (3) Science Operations Department, ESA/ESAC, Madrid, Spain ([email protected] / Fax: +31 565 4697) Abstract characteristics of carbonaceous chondrites, but also to metallic surface features. This contradiction makes The International Rosetta Mission is one of ESA’s it a very interesting object for close inspection. Cornerstone Missions on its way to rendezvous with Jupiter-family comet 67P/Churyumov-Gerasimenko Table 1: Orbital parameters of (21) Lutetia in 2014, to accompany the comet into the inner solar Perihelion distance 2.036 AU system, and land on the comet nucleus. On cruise to Aphelion distance 2.834 AU the main target the spacecraft had been scheduled for Semi-major axis 2.435 AU close fly-bys at two main-belt asteroids. After the Eccentricity 0.164 successful fly-by at E-type asteroid (2867) Steins in Inclination 3.0648 September 2008, Rosetta had its second close Orbital period 3.80 yrs encounter with an asteroid, (21) Lutetia, on 10 July 2010. A first summary of the fly-by is presented. 3. (21) Lutetia Fly-by Payload Operations 1. Overview of Asteroid Fly-by Geometry Most of the scientific instruments on board Rosetta were switched on obtaining imaging and spectral Rosetta had a close fly-by at asteroid (21) Lutetia on observations covering wavelengths from the UV to 10 July 2010, with closest approach at 15:44:53 UTC sub-mm, as well as in-situ measurements of the at a targeted minimum distance of 3160 km. -
Asteroid Regolith Weathering: a Large-Scale Observational Investigation
University of Tennessee, Knoxville TRACE: Tennessee Research and Creative Exchange Doctoral Dissertations Graduate School 5-2019 Asteroid Regolith Weathering: A Large-Scale Observational Investigation Eric Michael MacLennan University of Tennessee, [email protected] Follow this and additional works at: https://trace.tennessee.edu/utk_graddiss Recommended Citation MacLennan, Eric Michael, "Asteroid Regolith Weathering: A Large-Scale Observational Investigation. " PhD diss., University of Tennessee, 2019. https://trace.tennessee.edu/utk_graddiss/5467 This Dissertation is brought to you for free and open access by the Graduate School at TRACE: Tennessee Research and Creative Exchange. It has been accepted for inclusion in Doctoral Dissertations by an authorized administrator of TRACE: Tennessee Research and Creative Exchange. For more information, please contact [email protected]. To the Graduate Council: I am submitting herewith a dissertation written by Eric Michael MacLennan entitled "Asteroid Regolith Weathering: A Large-Scale Observational Investigation." I have examined the final electronic copy of this dissertation for form and content and recommend that it be accepted in partial fulfillment of the equirr ements for the degree of Doctor of Philosophy, with a major in Geology. Joshua P. Emery, Major Professor We have read this dissertation and recommend its acceptance: Jeffrey E. Moersch, Harry Y. McSween Jr., Liem T. Tran Accepted for the Council: Dixie L. Thompson Vice Provost and Dean of the Graduate School (Original signatures are on file with official studentecor r ds.) Asteroid Regolith Weathering: A Large-Scale Observational Investigation A Dissertation Presented for the Doctor of Philosophy Degree The University of Tennessee, Knoxville Eric Michael MacLennan May 2019 © by Eric Michael MacLennan, 2019 All Rights Reserved. -
Asteroid Touring Nanosatellite Fleet
Asteroid Touring Nanosatellite Fleet S Mihkel Pajusalu Postdoctoral fellow Massachusetts Institute of Technology (and Tartu Observatory) [email protected] + Pekka Janhunen, Andris Slavinskis, and the MAT collaboration Bio • 2010 MSc in Physics, University of Tartu, Estonia • 2010-2015 ESTCube-1 team, leader of Electrical Power Subsystem • 2014 PhD in Physics University of Tartu, Estonia • 2015 - 2019 Postdoc at MIT, Seager Group (astrobiology and instrumentation development for the MAT mission) Only 12 asteroids have been visited this far 1 Ceres Image Credit: NASA / 4 253 Mathilde 433 Eros JPL-Caltech / UCLA / Vesta NEAR /NASA NEAR Shoemaker MPS / DLR / IDA / Justin NASA/JPL/JHUAPL Cowart 951 Gaspra 243 Ida and 2867 Šteins 21 Lutetia Dactyl Galileo/NASA Rosetta ESA MPS ESA 2010 MPS for Galileo/NASA / JPL/USGS for OSIRIS Team OSIRIS Team MPS/UPD/LAM/IAA MPS/UPD/LAM/IAA/RSS D/INTA/UPM/DASP/IDA 9969 Braille 5535 Annefrank Deep Space 25143 Itokawa 4179 Toutatis Stardust/JPL/NASA 1/NASA/JPL/USGS Hayabusa/JAXA Chang’e/CNSA Multiple Asteroid Touring (MAT) mission See Slavinskis et al, “Nanospacecraft Fleet for Multi-asteroid Touring with Electric Solar Wind Sails”, IEEE Aerospace conference, 2018 Mission details • The reference mission contains 50 identical CubeSats • Estimated total cost <100 million USD • Each to visit 6 targets on average • 100 km – 1000 km flybys • Total of 300 visits during 3.2 years • Even if 50% are successful, number of visited asteroids would increase by a factor of 10 • First published concept from Finnish Meteorological -
Meteorite Collections: Sample List
Meteorite Collections: Sample List Institute of Meteoritics Department of Earth and Planetary Sciences University of New Mexico October 01, 2021 Institute of Meteoritics Meteorite Collection The IOM meteorite collection includes samples from approximately 600 different meteorites, representative of most meteorite types. The last printed copy of the collection's Catalog was published in 1990. We will no longer publish a printed catalog, but instead have produced this web-based Online Catalog, which presents the current catalog in searchable and downloadable forms. The database will be updated periodically. The date on the front page of this version of the catalog is the date that it was downloaded from the worldwide web. The catalog website is: Although we have made every effort to avoid inaccuracies, the database may still contain errors. Please contact the collection's Curator, Dr. Rhian Jones, ([email protected]) if you have any questions or comments. Cover photos: Top left: Thin section photomicrograph of the martian shergottite, Zagami (crossed nicols). Brightly colored crystals are pyroxene; black material is maskelynite (a form of plagioclase feldspar that has been rendered amorphous by high shock pressures). Photo is 1.5 mm across. (Photo by R. Jones.) Top right: The Pasamonte, New Mexico, eucrite (basalt). This individual stone is covered with shiny black fusion crust that formed as the stone fell through the earth's atmosphere. Photo is 8 cm across. (Photo by K. Nicols.) Bottom left: The Dora, New Mexico, pallasite. Orange crystals of olivine are set in a matrix of iron, nickel metal. Photo is 10 cm across. (Photo by K. -
(Co3) Meteorite: an Integrated Isotopic, Organic and Mineralogical Study
Lunar and Planetary Science XXXVIII (2007) 2267.pdf THE MOSS (CO3) METEORITE: AN INTEGRATED ISOTOPIC, ORGANIC AND MINERALOGICAL STUDY. R. C. Greenwood1, V. K. Pearson1, A. B. Verchovsky1, D. Johnson1, I. A. Franchi1, E. Roaldset2, G. Raade2 and R. Bartoschewitz3, 1Planetary and Space Sciences Research Institute, Open University, Milton Keynes, MK7 6AA, UK. E-mail: [email protected]; 2Naturhistorisk museum, Universitetet i Oslo, Postboks 1172 Blindern, 0318 Oslo, Norway; 3Meteorite Laboratory, Lehmweg 53, D-38518 Gifhorn, Germany. Introduction: Following a bright fireball and a oxygen three-isotope diagram (Fig.1) previously ana- loud explosion the Moss meteorite fell on 14 July 2006 lyzed CO3 falls plot as a tight central cluster with CO3 at approximately 10:20am in the Moss-Rygge area on finds on either side [7]. The oxygen isotope analysis the east side of Oslofjord [1]. 5 stones were subse- for Moss plots within this central cluster and hence quently recovered with a total mass of nearly 4 kg [1]. confirms it as being a CO3 chondrite. Petrography, mineralogy and oxygen isotope analysis confirm that Moss is a carbonaceous chondrite of the Ornans group (CO3) [1]. Ornans-type chondrites are a distinct group with a characteristic texture consisting of a high density of small (0.2 – 0.5 mm) chondrules, inclusions and lithic fragments enclosed by a dark matrix. They also have a significantly lower matrix to chondrule ratio than other carbonaceous chondrites [2, 3]. As a consequence of this textural coherence, CO3 chondrites are thought to represent samples from a single asteroid. Unique among the carbonaceous chondites, the Ornans group show textural, mineralogical and isotopic evidence for a metamorphic series analogous to that seen in the or- dinary chondrites [4, 5, 6, 7]. -
Impact-Produced Seismic Shaking and Regolith Growth on Asteroids 433 Eros, 2867 Šteins, and 25143 Itokawa James E
Icarus 347 (2020) 113811 Contents lists available at ScienceDirect Icarus journal homepage: www.elsevier.com/locate/icarus Impact-produced seismic shaking and regolith growth on asteroids 433 Eros, 2867 Šteins, and 25143 Itokawa James E. Richardson a,<, Jordan K. Steckloff b, David A. Minton c a Planetary Science Institute, 536 River Avenue, South Bend, IN, 46601, USA b Planetary Science Institute, 2234 E. North Territorial Road, Whitmore Lake, MI, 48189, USA c Purdue University, Department of Earth, Atmospheric, and Planetary Sciences, 550 Stadium Mall Drive, West Lafayette, IN, 47907, USA ARTICLEINFO ABSTRACT Keywords: Of the several near-Earth and Main Belt asteroids visited by spacecraft to date, three display a paucity of Asteroids small craters and an enhanced number of smoothed and degraded craters: 433 Eros, which has a deficit of Surfaces craters ¿ 100 m in diameter; 2867 Šteins, which has a deficit of craters ¿ 500 m in diameter; and 25143 Asteroid eros Itokawa, which has a deficit of craters ¿ 100 m in diameter. The purpose of this work was to investigate Asteroid Itokawa and model topographic modification and crater erasure due to impact-induced seismic shaking, as well as Impact processes Regoliths impact-driven regolith production and loss, on these asteroid surfaces. To perform this study, we utilized the numerical, three-dimensional, Cratered Terrain Evolution Model (CTEM) initially presented in J. E. Richardson, Icarus 204 (2009), which received a small-body (SB) specific update for this work. SBCTEM simulations of the surface of 433 Eros correctly reproduce its observed cratering record (for craters up to ∼ 3 km in diameter) at a minimum Main Belt exposure age of 225 , 75 Myr using a `very weak rock' target strength of 0.5–5.0 MPa, and producing a mean regolith depth of 80 , 20 m, which agrees with published estimates of an actual regolith layer ``tens of meters'' in depth. -
Observations of 21 Lutetia in the 2–4 Μm Region with the NASA IRTF
42nd Lunar and Planetary Science Conference (2011) 1439.pdf OBSERVATIONS OF 21 LUTETIA IN THE 2-4 µM REGION WITH THE NASA IRTF . A. S. Rivkin1, B. E. Clark2, M. E. Ockert-Bell2, M. K. Shepard3, E. L. Volquardsen4, E. S. Howell5, and S. J. Bus4, 1JHU/APL, Laurel MD ([email protected]), 2Ithaca College, Ithaca NY, 3Bloomberg College, Bloomberg PA, 4Institute for As- tronomy, Hilo HI, 5Arecibo Observatory/NAIC, Arecibo PR. Background: It has been difficult to reach a con- Lutetia was warm enough to exhibit measurable sensus on the composition of the asteroid 21 Lutetia. It thermal flux in the longer-wavelength portions of our was one of the original members of the M asteroid spectra. This thermal flux was removed using a ver- class, and thought likely to be either akin to iron mete- sion of the standard thermal model (STM), modified so orites or enstatite chondrites [1]. However, decades of as to allow the “beaming parameter” (η) to vary. We more in-depth observations have interpretations that found the best values for η to be 0.75-0.82 for the are difficult to reconcile with those analogs (particu- SpeX data, near the low end of the observed range for larly iron meteorites). asteroids but not unprecedentedly so. Recorrecting the For instance, Lutetia’s radar albedo is similar to NSFCam data indicates higher values of η for those that of the C and S asteroids rather than what is ex- spectra, in the range of 0.9-1.0, will result in good pected of a metal-rich surface [2]. -
Preparations and Strategy for Navigation During Rosetta Comet Phase
PREPARATIONS AND STRATEGY FOR NAVIGATION DURING ROSETTA COMET PHASE Pablo Muñoz(1), Frank Budnik(2), Bernard Godard(3), Trevor Morley(2), Vicente Companys(2), Ulrich Herfort(2), and Carlos Casas(1) (1) GMV, located at ESOC*. Email: [email protected], [email protected] (2) European Space Agency, located at ESOC*. Email: <firstname>.<lastname>@esa.int (3) VEGA Space GmbH, located at ESOC*. Email: [email protected] * Robert-Bosch-Strasse 5, 64293 Darmstadt, Germany. +49 6151 900 Keywords: Rosetta, optical navigation, spacecraft orbit determination, comet orbit and attitude determination, 67P/Churyumov-Gerasymenko 0BABSTRACT Rosetta is an interplanetary cornerstone mission in ESA's long-term space science program. Its main objective is the exploration and study of the comet 67P/Churyumov-Gerasimenko during its approach to the Sun. The spacecraft carries 11 scientific instruments and a lander module, Philae, with 10 additional instruments, for the most detailed study of a comet ever attempted. Launched in March 2004 with an Ariane-5/G1, it used four planetary swing-bys (Earth and Mars) in order to obtain the required velocity to reach the comet. During its long journey, Rosetta had close encounters (fly-bys) with two asteroids: 2867 Steins and 21 Lutetia. The spacecraft entered hibernation mode on 8th June 2011, switching off almost all its systems, except the main computer and several heaters. During 31 months it will fly silently on its way to meet the comet, until 20th January 2014, when the spacecraft is set to reactivate again. Four months later, the Rosetta mission comet phase formally starts. This paper describes the planned navigation strategy and preparations that have been performed by the ESOC Flight Dynamics team to support the navigation operations during the comet phase. -
Near Infra-Red Spectroscopy of the Asteroid 21 Lutetia II
A&A 470, 1157–1164 (2007) Astronomy DOI: 10.1051/0004-6361:20066944 & c ESO 2007 Astrophysics Near infra-red spectroscopy of the asteroid 21 Lutetia II. Rotationally resolved spectroscopy of the surface D. A. Nedelcu1,2, M. Birlan1, P. Vernazza3, P. Descamps1,R.P.Binzel4,F.Colas1, A. Kryszczynska5,andS.J.Bus6 1 Institut de Mécanique Céleste et de Calcul des Éphémérides (IMCCE), Observatoire de Paris, 77 avenue Denfert-Rochereau, 75014 Paris Cedex, France e-mail: [Mirel.Birlan;Pascal.Descamps;Francois.Colas]@imcce.fr 2 Astronomical Institute of the Romanian Academy, 5 Cu titul de Argint, 75212 Bucharest, Romania e-mail: [email protected] 3 LESIA, Observatoire de Paris-Meudon, 5 place Jules Janssen, 92195 Meudon Cedex, France e-mail: [email protected] 4 Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge MA 02139, USA e-mail: [email protected] 5 Astronomical Observatory, Adam Mickiewicz University, Sloneczna 36, 60-286 Poznan, Poland e-mail: [email protected] 6 Institute for Astronomy, 640 North A’ohouku Place, Hilo, HI 96720, USA e-mail: [email protected] Received 15 December 2006 / Accepted 16 April 2007 ABSTRACT Aims. In the framework of the ground-based science campaign dedicated to the encounter with the Rosetta spacecraft, the mineralogy of the asteroid (21) Lutetia was investigated. Methods. Near-infrared (NIR) spectra of the asteroid in the 0.8−2.5 µm spectral range were obtained with SpeX/IRTF in remote observing mode from Meudon, France in March and April 2006. We analysed these data together with previously acquired spectra – March 2003, August 2004.