Data Set Overview:This data set contains the data referred to ARS Mission PhaseData:Both data, scientific and housekeeping, are collected in this dataset. They referred to CODMAC Level 3.Processing:Only CODMAC Level 3 data are present in this data setA preliminary calibration is used for level 3 data during cruisephase when sensorhead boom is stowed, thus yielding to a poor dataquality. See ROMAP_CALIBRATION_DESC.TXT in DOCUMENT directory andDATA_QUALITY keyword in data file labels.Coordinate System:The geometry items SC_SUN_POSITION_VECTOR, SC_TARGET_POSITION_VECTORand SC_TARGET_VELOCITY_VECTOR provided in the label of the dataproduct are relative to the Earth Mean Equator and Equinox referenceframe of J2000.SUB_SPACECRAFT_LATITUDE, SUB_SPACECRAFT_LONGITUDE are given in thePLANETOCENTRIC coordinate system. These parameters are computed attime t:START_TIME. Distances are given in km, angles in degrees.ROMAP-MAG data are available in a non geophysical coordinate system(ECLIPJ2000, science_D for level 3, science_H for level 5). Althoughlocal systems might be preferred for solar wind interaction orremanent magnetization analysis, transformation in those systems isnot foreseen for asteroid flybys. The main reason is that ROMAP dataare used primarily for correction of RPC data. This has been done inS/C system. The transformation to local systems could be done by theuser.The coordinate system will change during comet phase from geophysicalcoordinates to comet related coordinates (e.g. comet fixed frame,comet solar orbital).

Data confidence is nominal, meaning that all data have been validated by the scientific team and found as expected. Any exceptions are noted by the DATA_QUALITY_ID.