{"@type": "dcat:Dataset", "accessLevel": "public", "accrualPeriodicity": "irregular", "bureauCode": ["026:00"], "contactPoint": {"@type": "vcard:Contact", "fn": "Thomas Morgan", "hasEmail": "mailto:thomas.h.morgan@nasa.gov"}, "description": "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.", "identifier": "urn:nasa:pds:ast.bus-demeo.taxonomy", "issued": "2021-05-21", "keyword": ["multiple-asteroids", "none"], "landingPage": "https://pds.nasa.gov/ds-view/pds/viewBundle.jsp?identifier=urn%3Anasa%3Apds%3Aast.bus-demeo.taxonomy&version=1.0", "license": "http://www.usa.gov/publicdomain/label/1.0/", "modified": "2025-07-17", "programCode": ["026:005"], "publisher": {"@type": "org:Organization", "name": "National Aeronautics and Space Administration"}, "references": ["https://pds.nasa.gov"], "theme": ["Earth Science"], "title": "BUS-DEMEO ASTEROID TAXONOMY"}