******************************************************************************** Original file name: lutetia_002m_cart.bds Created by: Nat Bachman (JPL/NAIF) Creation date: 26-JUN-2015 00:17 Description ============================================================================== Lutetia shape model SPICE DSK file based on Rosetta images. See "References" and the following sections of this file for details. This version of the model has approximately 1.6e6 plates. The reference frame of the shape data is ROS_LUTETIA (frame ID -2660021) The frame and PCK kernels used to make this DSK were ROS_V24.TF ROS_LUTETIA_RSOC_V03.TPC ROS_LUTETIA_RSOC_V03.TF This file can be read using the Alpha Test DSK prototype software set, which is available from NAIF. Although that software set is still under development, this file will continue to be readable by all future SPICE Toolkit versions of the software. Input files ------------------------------------------------------------------------------ Shape data: lutetia_002m_cart.wrl Converted to MKDSK plate-vertex table input format (format 1). LSK: naif0011.tls References ============================================================================== Plate model data were taken from the PDS Small Bodies Node web site; the URL is http://pdssbn.astro.umd.edu/holdings/ro-a-osinac_osiwac-5-lutetia-shape-v1.0 The data set description given there is Shape model of asteroid 21 Lutetia, as derived from the Rosetta images obtained around the time of closest approach. Twelve different versions of the model, at different resolutions, are given. The publication date of the data set was 2013 Jan 23. The data set citation is: Farnham, T.L., SHAPE MODEL OF ASTEROID 21 LUTETIA, RO-A-OSINAC/OSIWAC-5-LUTETIA-SHAPE-V1.0, NASA Planetary Data System, 2013. PDS label for the input shape data file ============================================================================== PDS_VERSION_ID = PDS3 LABEL_REVISION_NOTE = "Jul 16 2013: T. Farnham; Created " RECORD_TYPE = "FIXED_LENGTH" RECORD_BYTES = 80 FILE_RECORDS = 2379435 ^COUNTS_TABLE = ("LUTETIA_002M_CART.WRL",6) ^VERTEX_TABLE = ("LUTETIA_002M_CART.WRL",7) ^PLATE_TABLE = ("LUTETIA_002M_CART.WRL",793109) DATA_SET_ID = "RO-A-OSINAC/OSIWAC-5-LUTETIA-SHAPE-V1.0" PRODUCT_NAME = "CARTESIAN PLATE MODEL FOR ASTEROID LUTETIA - 2M PLATES" PRODUCT_ID = "LUTETIA-CARTESIAN-PLATE-MODEL-2MILLION" INSTRUMENT_HOST_ID = "RO" INSTRUMENT_HOST_NAME = "ROSETTA-ORBITER" INSTRUMENT_ID = {"OSINAC","OSIWAC"} TARGET_NAME = "21 LUTETIA" START_TIME = "N/A" STOP_TIME = "N/A" PRODUCT_CREATION_TIME = 2013-07-16 OBJECT = COUNTS_TABLE ROWS = 1 ROW_BYTES = 80 INTERCHANGE_FORMAT = ASCII COLUMNS = 2 DESCRIPTION = "Table that gives the count of vertices and plates representing the surface of the numerical shape model. The shape model comprises triangular plates and vertices that are specified in a body-fixed cartesian coordinate system." OBJECT = COLUMN COLUMN_NUMBER = 1 NAME = "NUMVERTICES" DESCRIPTION = "NUMBER OF VERTICES IN SHAPE MODEL" DATA_TYPE = ASCII_INTEGER START_BYTE = 6 BYTES = 6 FORMAT = "I6" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 2 NAME = "NUMPLATES" DESCRIPTION = "NUMBER OF TRIANGULAR PLATES IN SHAPE MODEL" DATA_TYPE = ASCII_INTEGER START_BYTE = 15 BYTES = 7 FORMAT = "I7" END_OBJECT = COLUMN END_OBJECT = COUNTS_TABLE OBJECT = VERTEX_TABLE ROWS = 793099 ROW_BYTES = 80 INTERCHANGE_FORMAT = "ASCII" COLUMNS = 1 DESCRIPTION = "Table of vertices of the numerical shape model. These are the vertices of plates that approximate the surface of the body. Each row of this table contains the X, Y and Z coordinates of one vertex in a Cartesian coordinate system " OBJECT = COLUMN COLUMN_NUMBER = 1 NAME = "COORDINATES" DESCRIPTION = "The (x,y,z) coordinates of one vertex in the model" UNIT = "KILOMETER" DATA_TYPE = "ASCII_REAL" START_BYTE = 1 BYTES = 48 ITEMS = 3 ITEM_BYTES = 16 FORMAT = "3(F16.12)" END_OBJECT = COLUMN END_OBJECT = VERTEX_TABLE OBJECT = PLATE_TABLE ROWS = 1586194 ROW_BYTES = 80 INTERCHANGE_FORMAT = "ASCII" COLUMNS = 2 DESCRIPTION = "Table of triangular plates of the numerical shape model. These triangular plates approximate the surface of the body. Each row of this table contains three integer offsets that point to three vertices from the previous table. The three entries are the vertices of one triangular plate of the shape model, and denote the offset from the first row in the table of vertices. An offset of 0 points to the first row in the table of vertices, an offset of 1 to the second row, and so on. " OBJECT = COLUMN COLUMN_NUMBER = 1 NAME = "PLATE_VERTICES" DESCRIPTION = "Offsets of the three vertices defining this triangular plane. The offsets refer to the vertices listed in the preceding vertex table." DATA_TYPE = "ASCII_INTEGER" START_BYTE = 1 BYTES = 24 ITEMS = 3 ITEM_BYTES = 8 FORMAT = "3(I8)" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 2 NAME = "FLAG" DESCRIPTION = "VRML Flag denoting the end of the facet." DATA_TYPE = "ASCII_INTEGER" START_BYTE = 28 BYTES = 2 ITEMS = 1 ITEM_BYTES = 2 FORMAT = "(I2)" END_OBJECT = COLUMN END_OBJECT = PLATE_TABLE END Summary for DSK file lutetia_002m_cart.bds ============================================================================== Segment number: 1 Surface ID code: 2000021 (LUTETIA) Center ID code: 2000021 (LUTETIA) Reference frame name N/A; ID code: -2260021 Data type code: 2 (Shape model using triangular plates) Data class: 2 (Arbitrary surface) Min, max longitude (deg): 0.000000 360.000 Min, max latitude (deg): -90.0000 90.0000 Min, max radius (km): 3.30709E+01 6.46538E+01 Coverage start time: 1950 JAN 01 00:00:41.183 Coverage stop time: 2050 JAN 01 00:01:08.183 Type 2 parameters ----------------- Number of vertices: 793099 Number of plates: 1586194 Voxel edge length (km): 5.05453E-01 Number of voxels: 10062500 Number of coarse voxels: 80500 Voxel grid X, Y, Z extents: 230 250 175 Coarse voxel grid X, Y, Z extents: 46 50 35 Min, max vertex X value (km): -5.31332E+01 5.85580E+01 Min, max vertex Y value (km): -5.74028E+01 6.35251E+01 Min, max vertex Z value (km): -3.83110E+01 4.65410E+01 ============================================================================== ******************************************************************************** MKDSK RUN DATE/TIME: 2015-06-25T23:56:04 MKDSK SETUP FILE: lutetia_002m_cart.cmd MKDSK INPUT FILE: lutetia_002m_cart.inp MKDSK OUTPUT FILE: lutetia_002m_cart.bds OUTPUT FILE STATUS: NEW FILE ******************************************************************************** MKDSK Program; Ver. 1.1.0, 30-JUN-2014; Toolkit Ver. N0065 Complete MKDSK Setup File Template: \begindata INPUT_SHAPE_FILE = 'lutetia_002m_cart.inp' OUTPUT_DSK_FILE = 'lutetia_002m_cart.bds' COMMENT_FILE = ' ' LEAPSECONDS_FILE = 'naif0011.tls' SURFACE_NAME = 'LUTETIA' CENTER_NAME = 'LUTETIA' REF_FRAME_NAME = 'ROS_LUTETIA' START_TIME = '1950 JAN 1' STOP_TIME = '2050 JAN 1' DATA_CLASS = 2 INPUT_DATA_UNITS = ( 'ANGLES = DEGREES' 'DISTANCES = KM' ) COORDINATE_SYSTEM = 'LATITUDINAL' MINIMUM_LATITUDE = -90.0 MAXIMUM_LATITUDE = 90.0 MINIMUM_LONGITUDE = 0.0 MAXIMUM_LONGITUDE = 360.0 DATA_TYPE = 2 PLATE_TYPE = 1 FINE_VOXEL_SCALE = 3.0 COARSE_VOXEL_SCALE = 5 KERNELS_TO_LOAD = ( 'ROS_V24.TF' 'ROS_LUTETIA_RSOC_V03.TPC' 'ROS_LUTETIA_RSOC_V03.TF' ) \begintext ********************************************************************************