PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM OBJECT = TEXT NOTE = " AAREADME file for Stardust Wild 2 shape models, version 2.1" PUBLICATION_DATE = 2006-06-28 END_OBJECT = TEXT END This volume was created for the sole purpose of delivering this small data set on a hard medium to Central Node and the NSSDC. For information about content and format, please see the documentation in the descriptive sections of the files in the catalog/ subdirectory. Version 2.1 corrects an error in the RECORD_TYPE value of one of the data file labels. Shape models of Comet Wild 2 as derived from the Stardust NAVCAM images ======================================================================== Introduction ============ This document provides an overview of this volume of the Wild 2 shape models, including a complete listing of the volume contents. This volume contains the triaxial ellipsoid model that defines the basic shape and orientation of the nucleus, as well as the more detailed plate model that describes the topographic features on the surface. Different versions of the plate model are included, with 2 versions in cartesian coordinates and 2 versions in planetocentric coordinates. For each set, one version includes only the portions of the surface visible in the NAVCAM images, while the second version fills in the unseen regions with the best-fitting triaxial ellipsoid. See the DATASET.CAT file in the CATALOG directory for information about how the models were derived. Version 1.0 of this data set included only the triaxial ellipsoid. Version 2.0 adds the various forms of the deailed plate model. Volume Contents =============== Files on this volume are organized into a set of subdirectories below the top-level directory. The following table shows the structure and content of these directories. In the table, directory names are enclosed in square brackets ([]). [TOP-LEVEL-DIRECTORY] | |-- AAREADME.TXT The text version of the AAREADME file. |-- VOLDESC.CAT Description of the contents of this volume. | |--[BROWSE] Directory containing PDS catalog objects. | | | |-- BROWSEINFO.TXT Description of files in the BROWSE directory. | |-- WILD2_SHAPE_VRML_HEADL.LBL VRML version of plate model (Headlight) | |-- WILD2_SHAPE_VRML_SOLAR.LBL VRML version of plate model (sun illum.) | +-- *.LBL PDS labels for documents in this directory. | |--[CATALOG] Directory containing PDS catalog objects. | | | |-- CATINFO.TXT Description of files in the CATALOG directory. | |-- DATASET.CAT Description of Widl 2 shape models. | |-- NAVCAM.CAT Description of the NAVCAM instrument. | |-- SDU.CAT Description of the spacecraft. | |-- STARDUST.CAT Description of the mission. | |-- REFERENCE.CAT References to works cited in catalog objects. | |-- 81P_WILD_2_1978_A2.CAT Target catalog object for comet Wild 2. | +-- 5535_ANNEFRANK.CAT Target catalog object for asteroid Annefrank. | |--[DATA] Directory containing NAVCAM Wild 2 data. | | | |-- WILD2_SHAPE.TAB Basic triaxial ellipsoid shape model of Wild 2. | |-- WILD2_CART_VIS.TAB Plate model of the visible surface (cartesian). | |-- WILD2_CART_FULL.TAB Plate model of full nucleus (cartesian). | |-- WILD2_PLAN_VIS.TAB Plate model of the visible surface (planeto.). | |-- WILD2_PLAN_FULL.TAB Plate model of full nucleus (planetocentric). | +-- *.LBL PDS labels for documents in this directory. | |--[DOCUMENT] Directory containing volume related documents. | | | |-- DOCINFO.TXT Description of files in the DOCUMENT directory. | |-- MODEL_DESC.TXT Description of the triaxial ellipsoid model. | |-- FIGURE1.* Figure showing the model geometry. | |-- FIGURE2.* Figure showing the triaxial ellipsoid fit. | |-- PLATE_MODEL_DESC.TXT Description of the topographic plate model. | |-- PLATE_FIGURE1.* Figure showing the plate model. | |-- MODEL_PREP.TXT Steps taken by SBN to prepare the models. | +-- *.LBL PDS labels for documents in this directory. | +--[INDEX] Directory containing index files. | |-- INDXINFO.TXT Description of files in the INDEX directory. |-- INDEX.TAB Index of files on this volume. +-- INDEX.LBL PDS label for INDEX.TAB file. Whom to Contact for Information =============================== Model generation: Dr. Thomas C. Duxbury Phone: +1 (818) 354-4301 Electronic mail address: THOMAS.C.DUXBURY@JPL.NASA.GOV JET PROPULSION LABORATORY MAILSTOP 301-429 4800 OAK GROVE DRIVE PASADENA, CA 91109 USA Preparation for PDS (SBN) Dr. Tony L. Farnham Phone: +1 (301) 405-3856 Electronic mail address: farnham@astro.umd.edu Dr. Jian-yang Li Phone: +1 (301) Electronic mail address: jyli@astro.umd.edu Department of Astronomy University of Maryland College Park, MD 20742 USA -Tony Farnham PDS Small Bodies Node University of Maryland 2006-06-28