Data Set Information
DATA_SET_NAME BUS-DEMEO ASTEROID TAXONOMY V1.0
DATA_SET_ID EAR-A-VARGBDET-5-BUSDEMEOTAX-V1.0
NSSDC_DATA_SET_ID
DATA_SET_TERSE_DESCRIPTION
DATA_SET_DESCRIPTION Data Set Overview : The Bus-DeMeo asteroid taxonomy classification system, described in DeMeo et al. (2009), is based on reflectance spectrum characteristics for 371 asteroids measured over the wavelength 0.45 to 2.45 microns. This system of 24 classes is constructed using principal component analysis, following most closely the visible wavelength taxonomy of Bus (1999), which itself builds upon the system of Tholen (1984). Nearly all of the Bus taxonomy classes are preserved, with one new class (Sv) defined. Note that a 'w' following the taxonomic type indicates that the spectrum has a slope greater than 0.25. A ':' following the taxonomic type indicates a questionable classification because of low quality or questionable data. Spectra with a ':' are not included in the mean spectra. This data set includes a table of classifications in the DeMeo-Bus system for the 371 asteroids upon which the system is based. It also includes mean spectra for each of the classes, and the principal component scores. Files included in the data directory: demeotax.tab - Bus-DeMeo classifications for 371 asteroids. meanspectra.tab - Mean spectra for each of the 24 classes. demeorefs.tab - Full references for the published papers with the spectral observations used for the classifications, cited in demeotax.tab. pcscores.tab - Principal component scores for the 371 asteroids. Ancillary documents included in the documents directory: classdesc.asc - For each of the 24 classes, this document gives the column for that class in the meanspectra.tab file, a short physical description of the spectrum, and the number of asteroids included in the class. taxocard.pdf - Thumbnail spectra for each of the 24 classes, arranged on a single page for easy reference and comparison. References: Bus, S. J., Compositional structure in the asteroid belt: Results of a spectroscopic survey. PhD thesis, Massachusetts Institute of Technology, 1999. DeMeo, F., R.P. Binzel, S.M. Slivan, and S.J. Bus, An extension of the Bus asteroid taxonomy into the Near-Infrared, Icarus 202 160-180, 2009. Tholen, D.J., Asteroid Taxonomy from Cluster Analysis of Photometry, Ph.D. dissertation, University of Arizona, 1984.
DATA_SET_RELEASE_DATE 2009-06-03T00:00:00.000Z
START_TIME 1991-10-25T12:00:00.000Z
STOP_TIME 2008-05-10T12:00:00.000Z
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 VARGBTEL
INSTRUMENT_NAME VARIOUS GROUND-BASED DETECTORS
INSTRUMENT_ID VARGBDET
INSTRUMENT_TYPE UNKNOWN
NODE_NAME Small Bodies
ARCHIVE_STATUS LOCALLY_ARCHIVED
CONFIDENCE_LEVEL_NOTE Confidence Level Overview : All classifications are consistent with the output from the online webtool at http://smass.mit.edu/busdemeoclass.html. Classifications that are uncertain due to the quality of the spectral data are denoted by a colon following the class designation.
CITATION_DESCRIPTION DeMeo, F., Binzel, R.P., Slivan, S.M., and Bus, S.J., Bus-DeMeo Asteroid Taxonomy V1.0. EAR-A-VARGBDET-5-BUSDEMEOTAX-V1.0. NASA Planetary Data System, 2009.
ABSTRACT_TEXT The Bus-DeMeo asteroid taxonomy classification system, described in DeMeo et al. (2009), is based on reflectance spectrum characteristics for 371 asteroids measured over the wavelength 0.45 to 2.45 microns. This system of 24 classes is constructed using principal component analysis, following most closely the visible wavelength taxonomy of Bus (1999), which itself builds upon the system of Tholen (1984). Nearly all of the Bus taxonomy classes are preserved, with one new class (Sv) defined. This data set includes a table of classifications in the Bus-DeMeo system for the 371 asteroids upon which the system is based. It also includes mean spectra for each of the classes.
PRODUCER_FULL_NAME CAROL NEESE
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