PDS_VERSION_ID = PDS3 /* File Characteristics */ RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 64 FILE_RECORDS = 198 /* Data Object Pointers */ ^TABLE = "mul70dis.tab" /* Identification Keywords */ DATA_SET_ID = "EAR-A-5-DDR-PROPER-ELEMENTS-V1.0" PRODUCT_NAME = "Discarded Results - Multi-Opposition" PRODUCT_ID = "PROPEL-MUL70DIS-199703" INSTRUMENT_HOST_NAME = "N/A" INSTRUMENT_NAME = "N/A" TARGET_NAME = ASTEROID START_TIME = "N/A" STOP_TIME = "N/A" PRODUCT_CREATION_TIME = 1997-03-24 /* Peer Review Date */ RECORD_FORMAT = "(a5,2x,f7.5,2(1x,f5.4),2(1x,f9.3),1x,i3, 2(1x,i2),1x,f5.2)" /* Data Object Descriptions */ OBJECT = TABLE ROWS = 198 ROW_BYTES = 64 INTERCHANGE_FORMAT = ASCII COLUMNS = 10 DESCRIPTION = "Version 7.0 of the proper elements of Milani and Knezevic, for unnumbered multi-opposition asteroids. This file contains proper elements which have NOT been computed properly (absurd results, asteroids outside the region where the method works, etc.) 198 asteroids are included. See 'Asteroid proper elements and the dynamical structure of the asteroid belt', Milani and Knezevic 1994, Icarus 107, 219-254 for a full description of the fully analytic theory used to generate these proper elements. The software and input files to generate these proper elements are available from Andrea Milani, milani@dm.unipi.it." OBJECT = COLUMN COLUMN_NUMBER = 1 NAME = "ASTEROID IDENTIFICATION CODE" DESCRIPTION = "An alphanumeric code for the asteroid provisional designation. For survey asteroids, nnnnSS where SS is the survey (PL, T1, T2, or T3) and nnnn is the survey catalog number; for non-survey asteroids, aaXX(nn) where 19aa is the discovery year, XX is the letter pair indicating the half-month of discovery, and nn is the number indicating order of discovery within that half-month. (E.g. 1992 CD4 is coded as 92CD4.)" DATA_TYPE = CHARACTER START_BYTE = 1 BYTES = 5 FORMAT = A5 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 2 NAME = "PROPER SEMIMAJOR AXIS" DESCRIPTION = "Proper semi-major axis (a') in AU." UNIT = "ASTRONOMICAL UNIT" DATA_TYPE = ASCII_REAL START_BYTE = 8 BYTES = 7 FORMAT = "F7.5" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 3 NAME = "PROPER ECCENTRICITY" DESCRIPTION = "Proper eccentricity (e')." DATA_TYPE = ASCII_REAL START_BYTE = 16 BYTES = 5 FORMAT = "F5.4" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 4 NAME = "SINE OF PROPER INCLINATION" DESCRIPTION = "Sine of proper inclination, sin(I')." DATA_TYPE = ASCII_REAL START_BYTE = 22 BYTES = 5 FORMAT = "F5.4" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 5 NAME = "PROPER RATE OF PERIHELION" DESCRIPTION = "Proper rate of perihelion, g, in arcseconds per year." UNIT = "ARCSECONDS PER YEAR" DATA_TYPE = ASCII_REAL START_BYTE = 28 BYTES = 9 FORMAT = "F9.3" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 6 NAME = "PROPER RATE OF NODE" DESCRIPTION = "Proper rate of node, s, in arcseconds per year." UNIT = "ARCSECONDS PER YEAR" DATA_TYPE = ASCII_REAL START_BYTE = 38 BYTES = 9 FORMAT = "F9.3" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 7 NAME = "RESONANCE FLAG" DESCRIPTION = "Resonance flag (RFL) is a code indicating the presence of a resonance causing non-convergence of the proper element computation. RFL = 0 indicates convergence. RFL between 1 and 67 indicates the divisor of the resonance, RFL = 71 indicates problems related to the divisor z(3) = 3(g - g(6)) + s - s(6), and RFL of 90 or greater indicates failure in the selection of an adapted theory, with the exact value indicating the size of the last divergent step on a logarithmic scale; 90 corresponds to 0.001 and 100 corresponds to 1. The significance of RFL is discussed in greater detail in Milani and Knezevic 1994, Icarus 107, 219." DATA_TYPE = ASCII_INTEGER START_BYTE = 48 BYTES = 3 FORMAT = I3 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 8 NAME = "MEAN ELEMENTS QUALITY CODE" DESCRIPTION = "The mean elements quality code (QCM) is defined on a decibel scale in such a way that QCM = 0 corresponds to a short periodic term in a (semimajor axis) of amplitude 0.003 AU, and QCM = 10 corresponds to 0.03 AU. QCM larger than about 10 indicates nearly resonant cases for which the mean elements are seriously degraded. For QCM greater than or equal to 13, the osculating elements are copied into the mean elements file to avoid the ludicrous values which can result from the almost zero divide, and the computation of proper elements is skipped. Thus, QCM = 13 or greater flags the resonant asteroids. The significance of QCM is further discussed in Milani and Knezevic 1994, Icarus 107, 219." DATA_TYPE = ASCII_INTEGER START_BYTE = 52 BYTES = 2 FORMAT = I2 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 9 NAME = "OSCULATING ELEMENTS QUALITY CODE" DESCRIPTION = "The osculating elements quality code (QCO) is a decibel scale in which QCO = 0 corresponds to i(0) = 1E-4 and QCO = 20 corresponds to 1E-2. The covariance i(0)*2 is defined in Milani et al. 1994, 'Asteroids, Comets, Meteors 1993', Milani, DiMartino, and Cellino, Eds., Kluwer Academic Publishers 1994, p. 467. (QCO is used only for single-opposition orbits and is therefore 0 for all entries in this file.)" DATA_TYPE = ASCII_INTEGER START_BYTE = 55 BYTES = 2 FORMAT = I2 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 10 NAME = "ABSOLUTE V MAGNITUDE" DESCRIPTION = "Absolute V magnitude, H(V), from the osculating elements catalog of Bowell and Muinonen." UNIT = "MAGNITUDE" DATA_TYPE = ASCII_REAL START_BYTE = 58 BYTES = 5 FORMAT = "F5.2" END_OBJECT = COLUMN END_OBJECT = TABLE END