Adaptive Optics and Lightcurve Data of Asteroids: Twenty Shape Models and Information Content Analysis
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ESO's VLT Sphere and DAMIT
ESO’s VLT Sphere and DAMIT ESO’s VLT SPHERE (using adaptive optics) and Joseph Durech (DAMIT) have a program to observe asteroids and collect light curve data to develop rotating 3D models with respect to time. Up till now, due to the limitations of modelling software, only convex profiles were produced. The aim is to reconstruct reliable nonconvex models of about 40 asteroids. Below is a list of targets that will be observed by SPHERE, for which detailed nonconvex shapes will be constructed. Special request by Joseph Durech: “If some of these asteroids have in next let's say two years some favourable occultations, it would be nice to combine the occultation chords with AO and light curves to improve the models.” 2 Pallas, 7 Iris, 8 Flora, 10 Hygiea, 11 Parthenope, 13 Egeria, 15 Eunomia, 16 Psyche, 18 Melpomene, 19 Fortuna, 20 Massalia, 22 Kalliope, 24 Themis, 29 Amphitrite, 31 Euphrosyne, 40 Harmonia, 41 Daphne, 51 Nemausa, 52 Europa, 59 Elpis, 65 Cybele, 87 Sylvia, 88 Thisbe, 89 Julia, 96 Aegle, 105 Artemis, 128 Nemesis, 145 Adeona, 187 Lamberta, 211 Isolda, 324 Bamberga, 354 Eleonora, 451 Patientia, 476 Hedwig, 511 Davida, 532 Herculina, 596 Scheila, 704 Interamnia Occultation Event: Asteroid 10 Hygiea – Sun 26th Feb 16h37m UT The magnitude 11 asteroid 10 Hygiea is expected to occult the magnitude 12.5 star 2UCAC 21608371 on Sunday 26th Feb 16h37m UT (= Mon 3:37am). Magnitude drop of 0.24 will require video. DAMIT asteroid model of 10 Hygiea - Astronomy Institute of the Charles University: Josef Ďurech, Vojtěch Sidorin Hygiea is the fourth-largest asteroid (largest is Ceres ~ 945kms) in the Solar System by volume and mass, and it is located in the asteroid belt about 400 million kms away. -
Marathon 2,500 Years Edited by Christopher Carey & Michael Edwards
MARATHON 2,500 YEARS EDITED BY CHRISTOPHER CAREY & MICHAEL EDWARDS INSTITUTE OF CLASSICAL STUDIES SCHOOL OF ADVANCED STUDY UNIVERSITY OF LONDON MARATHON – 2,500 YEARS BULLETIN OF THE INSTITUTE OF CLASSICAL STUDIES SUPPLEMENT 124 DIRECTOR & GENERAL EDITOR: JOHN NORTH DIRECTOR OF PUBLICATIONS: RICHARD SIMPSON MARATHON – 2,500 YEARS PROCEEDINGS OF THE MARATHON CONFERENCE 2010 EDITED BY CHRISTOPHER CAREY & MICHAEL EDWARDS INSTITUTE OF CLASSICAL STUDIES SCHOOL OF ADVANCED STUDY UNIVERSITY OF LONDON 2013 The cover image shows Persian warriors at Ishtar Gate, from before the fourth century BC. Pergamon Museum/Vorderasiatisches Museum, Berlin. Photo Mohammed Shamma (2003). Used under CC‐BY terms. All rights reserved. This PDF edition published in 2019 First published in print in 2013 This book is published under a Creative Commons Attribution-NonCommercial- NoDerivatives (CC-BY-NC-ND 4.0) license. More information regarding CC licenses is available at http://creativecommons.org/licenses/ Available to download free at http://www.humanities-digital-library.org ISBN: 978-1-905670-81-9 (2019 PDF edition) DOI: 10.14296/1019.9781905670819 ISBN: 978-1-905670-52-9 (2013 paperback edition) ©2013 Institute of Classical Studies, University of London The right of contributors to be identified as the authors of the work published here has been asserted by them in accordance with the Copyright, Designs and Patents Act 1988. Designed and typeset at the Institute of Classical Studies TABLE OF CONTENTS Introductory note 1 P. J. Rhodes The battle of Marathon and modern scholarship 3 Christopher Pelling Herodotus’ Marathon 23 Peter Krentz Marathon and the development of the exclusive hoplite phalanx 35 Andrej Petrovic The battle of Marathon in pre-Herodotean sources: on Marathon verse-inscriptions (IG I3 503/504; Seg Lvi 430) 45 V. -
PACS Sky Fields and Double Sources for Photometer Spatial Calibration
Document: PACS-ME-TN-035 PACS Date: 27th July 2009 Herschel Version: 2.7 Fields and Double Sources for Spatial Calibration Page 1 PACS Sky Fields and Double Sources for Photometer Spatial Calibration M. Nielbock1, D. Lutz2, B. Ali3, T. M¨uller2, U. Klaas1 1Max{Planck{Institut f¨urAstronomie, K¨onigstuhl17, D-69117 Heidelberg, Germany 2Max{Planck{Institut f¨urExtraterrestrische Physik, Giessenbachstraße, D-85748 Garching, Germany 3NHSC, IPAC, California Institute of Technology, Pasadena, CA 91125, USA Document: PACS-ME-TN-035 PACS Date: 27th July 2009 Herschel Version: 2.7 Fields and Double Sources for Spatial Calibration Page 2 Contents 1 Scope and Assumptions 4 2 Applicable and Reference Documents 4 3 Stars 4 3.1 Optical Star Clusters . .4 3.2 Bright Binaries (V -band search) . .5 3.3 Bright Binaries (K-band search) . .5 3.4 Retrieval from PACS Pointing Calibration Target List . .5 3.5 Other stellar sources . 13 3.5.1 Herbig Ae/Be stars observed with ISOPHOT . 13 4 Galactic ISOCAM fields 13 5 Galaxies 13 5.1 Quasars and AGN from the Veron catalogue . 13 5.2 Galaxy pairs . 14 5.2.1 Galaxy pairs from the IRAS Bright Galaxy Sample with VLA radio observations 14 6 Solar system objects 18 6.1 Asteroid conjunctions . 18 6.2 Conjunctions of asteroids with pointing stars . 22 6.3 Planetary satellites . 24 Appendices 26 A 2MASS images of fields with suitable double stars from the K-band 26 B HIRES/2MASS overlays for double stars from the K-band search 32 C FIR/NIR overlays for double galaxies 38 C.1 HIRES/2MASS overlays for double galaxies . -
Occultation Newsletter Volume 8, Number 4
Volume 12, Number 1 January 2005 $5.00 North Am./$6.25 Other International Occultation Timing Association, Inc. (IOTA) In this Issue Article Page The Largest Members Of Our Solar System – 2005 . 4 Resources Page What to Send to Whom . 3 Membership and Subscription Information . 3 IOTA Publications. 3 The Offices and Officers of IOTA . .11 IOTA European Section (IOTA/ES) . .11 IOTA on the World Wide Web. Back Cover ON THE COVER: Steve Preston posted a prediction for the occultation of a 10.8-magnitude star in Orion, about 3° from Betelgeuse, by the asteroid (238) Hypatia, which had an expected diameter of 148 km. The predicted path passed over the San Francisco Bay area, and that turned out to be quite accurate, with only a small shift towards the north, enough to leave Richard Nolthenius, observing visually from the coast northwest of Santa Cruz, to have a miss. But farther north, three other observers video recorded the occultation from their homes, and they were fortuitously located to define three well- spaced chords across the asteroid to accurately measure its shape and location relative to the star, as shown in the figure. The dashed lines show the axes of the fitted ellipse, produced by Dave Herald’s WinOccult program. This demonstrates the good results that can be obtained by a few dedicated observers with a relatively faint star; a bright star and/or many observers are not always necessary to obtain solid useful observations. – David Dunham Publication Date for this issue: July 2005 Please note: The date shown on the cover is for subscription purposes only and does not reflect the actual publication date. -
(704) Interamnia from Its Occultations and Lightcurves
International Journal of Astronomy and Astrophysics, 2014, 4, 91-118 Published Online March 2014 in SciRes. http://www.scirp.org/journal/ijaa http://dx.doi.org/10.4236/ijaa.2014.41010 A 3-D Shape Model of (704) Interamnia from Its Occultations and Lightcurves Isao Satō1*, Marc Buie2, Paul D. Maley3, Hiromi Hamanowa4, Akira Tsuchikawa5, David W. Dunham6 1Astronomical Society of Japan, Yamagata, Japan 2Southwest Research Institute, Boulder, USA 3International Occultation Timing Association, Houston, USA 4Hamanowa Astronomical Observatory, Fukushima, Japan 5Yanagida Astronomical Observatory, Ishikawa, Japan 6International Occultation Timing Association, Greenbelt, USA Email: *[email protected], [email protected], [email protected], [email protected], [email protected], [email protected] Received 9 November 2013; revised 9 December 2013; accepted 17 December 2013 Copyright © 2014 by authors and Scientific Research Publishing Inc. This work is licensed under the Creative Commons Attribution International License (CC BY). http://creativecommons.org/licenses/by/4.0/ Abstract A 3-D shape model of the sixth largest of the main belt asteroids, (704) Interamnia, is presented. The model is reproduced from its two stellar occultation observations and six lightcurves between 1969 and 2011. The first stellar occultation was the occultation of TYC 234500183 on 1996 De- cember 17 observed from 13 sites in the USA. An elliptical cross section of (344.6 ± 9.6 km) × (306.2 ± 9.1 km), for position angle P = 73.4 ± 12.5˚ was fitted. The lightcurve around the occulta- tion shows that the peak-to-peak amplitude was 0.04 mag. and the occultation phase was just be- fore the minimum. -
Hesiod Theogony.Pdf
Hesiod (8th or 7th c. BC, composed in Greek) The Homeric epics, the Iliad and the Odyssey, are probably slightly earlier than Hesiod’s two surviving poems, the Works and Days and the Theogony. Yet in many ways Hesiod is the more important author for the study of Greek mythology. While Homer treats cer- tain aspects of the saga of the Trojan War, he makes no attempt at treating myth more generally. He often includes short digressions and tantalizes us with hints of a broader tra- dition, but much of this remains obscure. Hesiod, by contrast, sought in his Theogony to give a connected account of the creation of the universe. For the study of myth he is im- portant precisely because his is the oldest surviving attempt to treat systematically the mythical tradition from the first gods down to the great heroes. Also unlike the legendary Homer, Hesiod is for us an historical figure and a real per- sonality. His Works and Days contains a great deal of autobiographical information, in- cluding his birthplace (Ascra in Boiotia), where his father had come from (Cyme in Asia Minor), and the name of his brother (Perses), with whom he had a dispute that was the inspiration for composing the Works and Days. His exact date cannot be determined with precision, but there is general agreement that he lived in the 8th century or perhaps the early 7th century BC. His life, therefore, was approximately contemporaneous with the beginning of alphabetic writing in the Greek world. Although we do not know whether Hesiod himself employed this new invention in composing his poems, we can be certain that it was soon used to record and pass them on. -
Guide to the Extended Versions of MPC Data Files Based on the MPCORB Format
Guide to the Extended Versions of MPC Data Files Based on the MPCORB Format Last updated: 2016/04/19 by J.L. Galache Introduction The Minor Planet Center (MPC) has been providing the orbits of minor planets in the form of a file, MPCORB.DAT, since the mid '90s (1990s, not 1890s). Back then there were only a few thousand known asteroids, compared to the several hundred thousand of today, so a flat text file was the appropriate way to circulate these data. It was also a time when most orbit computations were programmed in Fortran, which ingested data no other way. MPCORB.DAT has therefore always been, and continues to be, a fixed-width file (see Table 1 for the current format description1). In fact, all original data files available on the MPC website are flat text files (even the orbits files provided for planetarium-type/sky simulation software packages are simply text files of varying format2). In the early years of the 2010s, possibly due to the rising popularity of the scripting language Python amongst astronomers, and an increased interest from developers wanting to write asteroid-themed tools, requests were received to provide data in other, easier to parse formats, e.g., JSON, CSV, SQL, etc. At the same time, astronomers and developers alike wanted more information than was currently been provided in MPCORB.DAT; information that did exist on the MPC website in other, often hard to find, files. Here was an opportunity to add some new data to existing files, while also making them available in other formats. -
Small Vehicle Asteroid Mission Concept
The “Bering” Small Vehicle Asteroid Mission Concept The “Bering” Small Vehicle Asteroid Mission Concept. Rene Michelsen1, Anja Andersen2, Henning Haack3, John L. Jørgensen4, Maurizio Betto4, Peter S. Jørgensen4, 1Astronomical Observatory, University of Copenhagen, Juliane Maries Vej 30, 2100 Copenhagen Denmark, Phone: +45 3532 5929, Fax: +45 3532 5989, e-mail: [email protected] 2Nordita, Blegdamsvej 17, 2100 Copenhagen, Denmark, Phone: +45 3532 5501, Fax: +45 3538 9157, e-mail: [email protected]. 3Geological Museum, University of Copenhagen, Øster Voldgade 5-7, 1350 Copenhagen K, Denmark Phone: +45 3532 2367, Fax: +45 3532 2325, e-mail: [email protected] 4Ørsted*DTU, MIS, Building 327, Technical University of Denmark, 2800 Lyngby, Denmark, Phone +45 4525 3438, Fax: +45 4588 7133, e-mail: [email protected], mbe@…, psj@… Abstract The study of the Asteroids is traditionally performed by means of large Earth based telescopes, by which orbital elements and spectral properties are acquired. Space borne research, has so far been limited to a few occasional flybys and a couple of dedicated flights to a single selected target. While the telescope based research offers precise orbital information, it is limited to the brighter, larger objects, and taxonomy as well as morphology resolution is limited. Conversely, dedicated missions offers detailed surface mapping in radar, visual and prompt gamma, but only for a few selected targets. The dilemma obviously being the resolution vs. distance and the statistics vs. delta-V requirements. Using advanced instrumentation and onboard autonomy, we have developed a space mission concept whose goal is to map the flux, size and taxonomy distributions of the Asteroids. -
Herodotus and the Origins of Political Philosophy the Beginnings of Western Thought from the Viewpoint of Its Impending End
Herodotus and the Origins of Political Philosophy The Beginnings of Western Thought from the Viewpoint of its Impending End A doctoral thesis by O. H. Linderborg Dissertation presented at Uppsala University to be publicly examined in Engelska Parken, 7-0042, Thunbergsvägen 3H, Uppsala, Monday, 3 September 2018 at 14:00 for the degree of Doctor of Philosophy. The examination will be conducted in English. Faculty examiner: Docent Elton Barker (Open University). Abstract Linderborg, O. H. 2018. Herodotus and the Origins of Political Philosophy. The Beginnings of Western Thought from the Viewpoint of its Impending End. 224 pp. Uppsala: Department of Linguistics and Philology, Uppsala University. ISBN 978-91-506-2703-9. This investigation proposes a historical theory of the origins of political philosophy. It is assumed that political philosophy was made possible by a new form of political thinking commencing with the inauguration of the first direct democracies in Ancient Greece. The pristine turn from elite rule to rule of the people – or to δημοκρατία, a term coined after the event – brought with it the first ever political theory, wherein fundamentally different societal orders, or different principles of societal rule, could be argumentatively compared. The inauguration of this alternative-envisioning “secular” political theory is equaled with the beginnings of classical political theory and explained as the outcome of the conjoining of a new form of constitutionalized political thought (cratistic thinking) and a new emphasis brought to the inner consistency of normative reasoning (‘internal critique’). The original form of political philosophy, Classical Political Philosophy, originated when a political thought launched, wherein non-divinely sanctioned visions of transcendence of the prevailing rule, as well as of the full range of alternatives disclosed by Classical Political Theory, first began to be envisioned. -
16 Minor Planet Bulletin 40 (2013)
16 bimodal but has some indication of flattening of the maximums. LIGHTCURVES FOR 1394 ALGOA, 3078 HORROCKS, 4874 Burke was observed by Aymani (2012), who obtained a 4724 BROCKEN, AND 6329 HIKONEJYO period of 3.657 ± 0.001 and amplitude A = 0.31 mag. Menzies FROM ETSCORN CAMPUS OBSERVATORY (2012) obtained a period of 3.656 ± 0.001 and an amplitude of 0.23 ± 0.02 mag. Daniel A. Klinglesmith III, Ethan Risley, Janek Turk, Angelica Vargas, Curtis Warren The 115° longitude difference between the Etscorn Campus Etscorn Campus Observatory Observatory and the Bigmuskie Observatory allowed almost an 8 New Mexico Tech hour (~0.3) phase shift for 3948 Bohr. This allowed us to cover the 101 East Road nearly 24-hour sidereal period asteroid completely. This type of Socorro, NM, USA 87801 international collaboration is essential for asteroid with periods [email protected] near 24 hours. The collaboration continued with the observations of 4874 Burke’s 3.657-hour period (Received: 6 September) Between 2012 March and June, four asteroids were observed at the Etscorn Campus Observatory. Synodic periods and amplitudes were determined for all four: 1394 Algoa, P = 2.768 ± 0.001 h, A = 0.21 ± 0.10 mag; 3078 Horrocks, P = 13.620 ± 0.003 h, A = 0.25 ± 0.10 mag; 4724 Brocken, P = 5.912 ± 0.001 h, A = 0.75 ± 0.10 mag; and 6329 Hikonejyo, P = 6.064 ± 0.001 h, A = 0.23 ± 0.10 mag. Continuing with the lightcurve program at Etscorn Campus Observatory, we obtained data for four asteroids using our two Celestron 35.6-cm f/11 Schmidt-Cassegrain telescopes and SBIG STL-1001E CCD cameras with 1024x1024x24-micron pixels. -
Aqueous Alteration on Main Belt Primitive Asteroids: Results from Visible Spectroscopy1
Aqueous alteration on main belt primitive asteroids: results from visible spectroscopy1 S. Fornasier1,2, C. Lantz1,2, M.A. Barucci1, M. Lazzarin3 1 LESIA, Observatoire de Paris, CNRS, UPMC Univ Paris 06, Univ. Paris Diderot, 5 Place J. Janssen, 92195 Meudon Pricipal Cedex, France 2 Univ. Paris Diderot, Sorbonne Paris Cit´e, 4 rue Elsa Morante, 75205 Paris Cedex 13 3 Department of Physics and Astronomy of the University of Padova, Via Marzolo 8 35131 Padova, Italy Submitted to Icarus: November 2013, accepted on 28 January 2014 e-mail: [email protected]; fax: +33145077144; phone: +33145077746 Manuscript pages: 38; Figures: 13 ; Tables: 5 Running head: Aqueous alteration on primitive asteroids Send correspondence to: Sonia Fornasier LESIA-Observatoire de Paris arXiv:1402.0175v1 [astro-ph.EP] 2 Feb 2014 Batiment 17 5, Place Jules Janssen 92195 Meudon Cedex France e-mail: [email protected] 1Based on observations carried out at the European Southern Observatory (ESO), La Silla, Chile, ESO proposals 062.S-0173 and 064.S-0205 (PI M. Lazzarin) Preprint submitted to Elsevier September 27, 2018 fax: +33145077144 phone: +33145077746 2 Aqueous alteration on main belt primitive asteroids: results from visible spectroscopy1 S. Fornasier1,2, C. Lantz1,2, M.A. Barucci1, M. Lazzarin3 Abstract This work focuses on the study of the aqueous alteration process which acted in the main belt and produced hydrated minerals on the altered asteroids. Hydrated minerals have been found mainly on Mars surface, on main belt primitive asteroids and possibly also on few TNOs. These materials have been produced by hydration of pristine anhydrous silicates during the aqueous alteration process, that, to be active, needed the presence of liquid water under low temperature conditions (below 320 K) to chemically alter the minerals. -
University Microfilms International 300 N
EVIDENCE FOR A COMPOSITIONAL RELATIONSHIP BETWEEN ASTEROIDS AND METEORITES FROM INFRARED SPECTRAL REFLECTANCES Item Type text; Dissertation-Reproduction (electronic) Authors Feierberg, Michael Andrew Publisher The University of Arizona. Rights Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author. Download date 05/10/2021 16:29:15 Link to Item http://hdl.handle.net/10150/282081 INFORMATION TO USERS This was produced from a copy of a document sent to us for microfilming. While the most advanced technological means to photograph and reproduce this document have been used, the quality is heavily dependent upon the quality of the material submitted. The following explanation of techniques is provided to help you understand markings or notations which may appear on this reproduction. 1. The sign or "target" for pages apparently lacking from the document photographed is "Missing Page(s)". If it was possible to obtain the missing page(s) or section, they are spliced into the film along with adjacent pages. This may have necessitated cutting through an image and duplicating adjacent pages to assure you of complete continuity. 2. When an image on the film is obliterated with a round black mark it is an indication that the film inspector noticed either blurred copy because of movement during exposure, or duplicate copy. Unless we meant to delete copyrighted materials that should not have been filmed, you will find a good image of the page in the adjacent frame.