PDS_VERSION_ID = PDS3 RECORD_TYPE = "FIXED_LENGTH" RECORD_BYTES = 240 FILE_RECORDS = 2653 ^TABLE = "DBCP.TAB" DATA_SET_ID = "EAR-C-COMPIL-5-DB-COMET-POLARIMETRY-V1.0" PRODUCT_NAME = "DATABASE OF COMET POLARIMETRY" PRODUCT_ID = "DBCP_TAB" INSTRUMENT_HOST_NAME = "PUBLISHED LITERATURE" INSTRUMENT_NAME = "COMPILATION" TARGET_NAME = "COMET" TARGET_TYPE = "COMET" START_TIME = 1940-11-26 STOP_TIME = 2005-07-03 PRODUCT_CREATION_TIME = 2006-07-05 OBJECT = TABLE ROWS = 2653 ROW_BYTES = 240 INTERCHANGE_FORMAT = "ASCII" COLUMNS = 27 DESCRIPTION = "This file contains a summary of polarization results culled from the literature. See the data set description for a brief discussion on the derivation and relationships among the various polarization parameters reported." OBJECT = COLUMN COLUMN_NUMBER = 1 NAME = "COMET_NUMBER" DESCRIPTION = "Periodic number, if any" DATA_TYPE = "ASCII_INTEGER" START_BYTE = 1 BYTES = 3 FORMAT = "I3" NOT_APPLICABLE_CONSTANT = " " END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 2 NAME = "COMET_TYPE" START_BYTE = 4 BYTES = 1 DATA_TYPE = "CHARACTER" FORMAT = "A1" DESCRIPTION = "Single letter indicating the type of the comet: P = periodic, C = non-periodic, D = defunct" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 3 NAME = "COMET_NAME" START_BYTE = 6 BYTES = 23 DATA_TYPE = "CHARACTER" FORMAT = "A23" DESCRIPTION = "Name of comet" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 4 NAME = "DISCOVERY_ID" START_BYTE = 30 BYTES = 9 DATA_TYPE = "CHARACTER" FORMAT = "A9" MISSING_CONSTANT = "-" DESCRIPTION = "IAU Discovery Designation of the comet" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 5 NAME = "YEAR" START_BYTE = 39 BYTES = 4 DATA_TYPE = "ASCII_INTEGER" FORMAT = "I4" DESCRIPTION = "Year of the observation" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 6 NAME = "MONTH" START_BYTE = 44 BYTES = 2 DATA_TYPE = "ASCII_INTEGER" FORMAT = "I2" DESCRIPTION = "Month of the observation" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 7 NAME = "DAY" START_BYTE = 47 BYTES = 6 UNIT = "UT DAY" DATA_TYPE = "ASCII_REAL" FORMAT = "F6.3" MISSING_CONSTANT = 00. DESCRIPTION = "Day of the observation" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 8 NAME = "EFFECTIVE WAVELENGTH" START_BYTE = 54 BYTES = 5 DATA_TYPE = "ASCII_INTEGER" FORMAT = "I5" UNIT = "ANGSTROM" MISSING_CONSTANT = -9999 DESCRIPTION = "Effective wavelength of filter" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 9 NAME = "FWHM" START_BYTE = 60 BYTES = 4 DATA_TYPE = "ASCII_INTEGER" FORMAT = "I4" UNIT = "ANGSTROM" MISSING_CONSTANT = -999 DESCRIPTION = "Full width at the half maximum of filter. The widths of the standard photometric systems realized by different observers can be distinguished from standard ones (see description of column 10)" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 10 NAME = "FILTER_NAME" START_BYTE = 65 BYTES = 11 DATA_TYPE = "CHARACTER" FORMAT = "A11" MISSING_CONSTANT = "-" DESCRIPTION = "Filter or spectral band used to make the observation, as given in the reference cited in the last column of the record. This data set includes the UBVRIJKL - standard wide photometric band system (Johnson, 1965, ApJ 141, 923), standard wide photometric band system VRI (Cousins, 1976, Mem. Roy. Astron. Soc. 81, 25-36 ), IHW - standard cometary filter set developed in the framework of the International Halley Watch program (Osborn et al. 1990, Icarus 88, 228-245), HB - standard cometary filter set developed in the framework of the International Hale-Bopp program (Farnham et al. 2000, Icarus 147, 180-204), and non standard narrow-band and wide-band filters used by different observers" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 11 NAME = "DIAPHRAGM" START_BYTE = 77 BYTES = 5 DATA_TYPE = "ASCII_REAL" FORMAT = "F5.1" UNIT = "ARCSECOND" MISSING_CONSTANT = -99.9 DESCRIPTION = "Diameter of observing diaphragm" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 12 NAME = "PROJ_DIAPHRAGM" START_BYTE = 83 BYTES = 7 DATA_TYPE = "ASCII_INTEGER" FORMAT = "I7" UNIT = "KILOMETER" MISSING_CONSTANT = -999999 DESCRIPTION = "Diameter of observing diaphragm projected at the comet" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 13 NAME = "BOX" START_BYTE = 91 BYTES = 8 DATA_TYPE = "CHARACTER" FORMAT = "A8" MISSING_CONSTANT = "-" DESCRIPTION = "Size of observing box, stated as two dimensions in units of arcseconds. For example, '45x45'." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 14 NAME = "PROJ_BOX" START_BYTE = 100 BYTES = 11 DATA_TYPE = "CHARACTER" FORMAT = "A11" MISSING_CONSTANT = "-" DESCRIPTION = "Size of observing box projected at the comet, stated as two dimensions in units of kilometers. For example, '3035x4654'." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 15 NAME = "OFFSET_NOTES" START_BYTE = 112 BYTES = 22 DATA_TYPE = "CHARACTER" FORMAT = "A22" MISSING_CONSTANT = "-----" DESCRIPTION = "Description of the offset of the centre of the diaphragm or box relative to the nucleus of comet. When present, this may be a distance to nucleus in arcsec or km and an azimuth around the nucleus in degrees or in the positions N (North), W (West), S (South), and E (East)." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 16 NAME = "LINEAR_POLARIZATION" START_BYTE = 135 BYTES = 6 DATA_TYPE = "ASCII_REAL" FORMAT = "F6.2" UNIT = "PERCENT" MISSING_CONSTANT = -99.99 DESCRIPTION = "Percent linear polarization. This is negative where theta(r), the angular deviation of the plane of polarization from the direction of the perpendicular to the plane of scattering, is between 45 and 135 degrees." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 17 NAME = "ERROR_LP" START_BYTE = 142 BYTES = 4 DATA_TYPE = "ASCII_REAL" FORMAT = "F4.2" UNIT = "PERCENT" MISSING_CONSTANT = -.99 DESCRIPTION = "Error in the preceding percent of linear polarization" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 18 NAME = "PA_POLARIZATION" START_BYTE = 147 BYTES = 6 DATA_TYPE = "ASCII_REAL" FORMAT = "F6.2" UNIT = "DEGREE" MISSING_CONSTANT = -99.99 DESCRIPTION = "Position angle of the plane of polarization, measured eastward from north" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 19 NAME = "ERROR_PA_POL" START_BYTE = 154 BYTES = 4 DATA_TYPE = "ASCII_REAL" FORMAT = "F4.1" UNIT = "DEGREE" MISSING_CONSTANT = -9.9 DESCRIPTION = "Error of the position angle of polarization plane" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 20 NAME = "CIRCULAR_POLARIZATION" START_BYTE = 159 BYTES = 6 DATA_TYPE = "ASCII_REAL" FORMAT = "F6.3" UNIT = "PERCENT" MISSING_CONSTANT = -9.999 DESCRIPTION = "Percent of circular polarization. The sign indicates handedness: Positive indicates right-handed polarization; negative left-handed." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 21 NAME = "ERROR_CP" START_BYTE = 166 BYTES = 5 DATA_TYPE = "ASCII_REAL" FORMAT = "F5.3" UNIT = "PERCENT" MISSING_CONSTANT = -.9999 DESCRIPTION = "Error in the percent of circular polarization" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 22 NAME = "PHASE_ANGLE" START_BYTE = 172 BYTES = 6 DATA_TYPE = "ASCII_REAL" FORMAT = "F6.2" UNIT = "DEGREE" MISSING_CONSTANT = -99.99 DESCRIPTION = "Phase angle. It is the angular distance between the Sun and the observer as seen from comet" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 23 NAME = "PA_SCATTERING" START_BYTE = 179 BYTES = 6 DATA_TYPE = "ASCII_REAL" FORMAT = "F6.2" UNIT = "DEGREE" MISSING_CONSTANT = -99.99 DESCRIPTION = "Position angle of the scattering plane. The scattering plane is defined by the Sun, the observer, and the comet" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 24 NAME = "DEVIATION_OF_PP" START_BYTE = 186 BYTES = 5 DATA_TYPE = "ASCII_REAL" FORMAT = "F5.1" UNIT = "DEGREE" MISSING_CONSTANT = -99.9 DESCRIPTION = "Deviation of the polarization plane from the direction perpendicular to the scattering plane" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 25 NAME = "R_HELIO" START_BYTE = 192 BYTES = 5 DATA_TYPE = "ASCII_REAL" FORMAT = "F5.3" UNIT = "AU" MISSING_CONSTANT = -.999 DESCRIPTION = "Heliocentric distance of comet" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 26 NAME = "R_GEO" START_BYTE = 198 BYTES = 5 DATA_TYPE = "ASCII_REAL" FORMAT = "F5.3" UNIT = "AU" MISSING_CONSTANT = -.999 DESCRIPTION = "Geocentric distance of comet" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 27 NAME = "REFERENCES" START_BYTE = 204 BYTES = 35 DATA_TYPE = "CHARACTER" FORMAT = "A35" DESCRIPTION = "References according to the list of references. For references listed as 'unpublished', contact the data supplier at kiselev@mao.kiev.ua" END_OBJECT = COLUMN END_OBJECT = TABLE END