Data Set Information
DATA_SET_NAME ASTEROID DYNAMICAL FAMILIES V2.0
DATA_SET_ID EAR-A-5-DDR-FAMILY-V2.0
NSSDC_DATA_SET_ID
DATA_SET_TERSE_DESCRIPTION
DATA_SET_DESCRIPTION Data Set Overview : This data set contains the Zappala et al. (1995) [ZAPPALAETAL1995] asteroid dynamical families classifications, based on the hierarchical clustering method applied to the proper elements of Milani & Knezevic (1994) [MILANI&KNEZEVIC1994]. It includes 12,487 numbered and unnumbered asteroids. Parameters : For each asteroid included in the analysis, the following parameters are provided. The proper elements a', e', and sin(i') of version 6.8.5 of the fully analytical theory of Milani and Knezevic (1995) [MILANI&KNEZEVIC1995]. These are the proper elements used as inputs to the hierarchical clustering analysis. The name of the family to which the asteroid was assigned. This is blank for asteroids not assigned to a family. The family name is identical with the name of the lowest-numbered asteroid in the family. A flag specifying whether the asteroid belongs to a nominal family (F) or a clump (C). These terms are defined in Zappala et al. (1995) [ZAPPALAETAL1995]. A quality code indicating the reliability of the family assignment. Data : The complete family classifications are found in the file 'family.tab'. Ancillary Data : Files for each individual family contain just the asteroids in that family at a quality code of 2 or 3. For the convenience of users, absolute magnitudes, albedos, and diameters have been included in these files. Modification History -------------------- This data set was first archived in 1994, including the family classifications of Zappala et al. (1990) [ZAPPALAETAL1990] as well as several historical classifications. This is the first update to the data set, using the most recent and extensive classifications of Zappala et al. (1995) [ZAPPALAETAL1995]. The historical classifications will be added in a future update.
DATA_SET_RELEASE_DATE 1997-03-24T00:00:00.000Z
START_TIME 1965-01-01T12:00:00.000Z
STOP_TIME N/A (ongoing)
MISSION_NAME SUPPORT ARCHIVES
MISSION_START_DATE 2004-03-22T12:00:00.000Z
MISSION_STOP_DATE N/A (ongoing)
TARGET_NAME ASTEROID
TARGET_TYPE ASTEROID
INSTRUMENT_HOST_ID PUBLIT
INSTRUMENT_NAME COMPILATION
INSTRUMENT_ID COMPIL
INSTRUMENT_TYPE UNKNOWN
NODE_NAME Small Bodies
ARCHIVE_STATUS SUPERSEDED
CONFIDENCE_LEVEL_NOTE Review : This data set underwent peer review on March 24, 1997.
CITATION_DESCRIPTION Citation TBD
ABSTRACT_TEXT This data set contains the Zappala et al. (1995) [ZAPPALAETAL1995] asteroid dynamical families classifications, based on the hierarchical clustering method applied to the proper elements of Milani & Knezevic (1994) [MILANI&KNEZEVIC1994]. It includes 12,487 numbered and unnumbered asteroids.
PRODUCER_FULL_NAME CAROL NEESE
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