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    • SMALL MAIN-BELT ASTEROID SPECTROSCOPIC SURVEY, PHASE II

    Metadata Updated: April 11, 2025

    This data set contains visible-wavelength (0.435-0.925 micron) spectra for 1341 main-belt asteroids observed during the second phase of the Small Main-belt Asteroid Spectroscopic Survey (SMASSII) between August 1993 and March 1999. The purpose of the SMASSII survey was to provide a new basis for studying the compositional diversity and structure of the asteroid belt. Based on experiences gained from the earlier SMASS survey, SMASSII focused on producing an even larger, internally consistent set of CCD spectra for small (D < 20 km) main-belt asteroids. The observing strategies and procedures used during SMASSII roughly parallel those used in the first survey (Xu et al. Icarus 115 1-35, 1995 [XUETAL1995]), though several minor changes were made in instrumentation and in portions of the data reduction process.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: us-pd

    Downloads & Resources

    References

    https://pds.nasa.gov

    Dates

    Metadata Created Date January 31, 2023
    Metadata Updated Date April 11, 2025
    Data Update Frequency irregular

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date January 31, 2023
    Metadata Updated Date April 11, 2025
    Publisher National Aeronautics and Space Administration
    Maintainer
    Identifier urn:nasa:pds:context_pds3:data_set:data_set.ear-a-i0028-4-sbn0001-smassii-v1.0_pyuc-ea53
    Data First Published 2021-05-21
    Data Last Modified 2025-03-31
    Category Earth Science
    Public Access Level public
    Data Update Frequency irregular
    Bureau Code 026:00
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id 3aaf3814-f879-415f-b08a-cbf0b23b63c9
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://pds.nasa.gov/ds-view/pds/viewDataset.jsp?dsid=EAR-A-I0028-4-SBN0001%2FSMASSII-V1.0
    License http://www.usa.gov/publicdomain/label/1.0/
    Program Code 026:005
    Related Documents https://pds.nasa.gov
    Source Datajson Identifier True
    Source Hash 3220f7d235ad6592a706012e9bb494b8532a77e9fbecee5117e5c51ae3e1bfb6
    Source Schema Version 1.1

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