Data Set Overview : The eight color asteroid survey provides reflectance spectra for minor planets using eight filter passbands. This dataset includes the primary data obtained for 589 minor planets, the mean values for each minor planet included in the survey, the principal component scores derived from the primary data, the response curves, effective wavelengths, and bandpasses for the filters, and the coordinates and values determined for standard stars defining the system.   Data : The data are included in six ASCII data tables. 'ecas.tab' - Primary data. 'ecasmean.tab' - Mean values derived from primary data. 'ecaspc.tab' - Principal component scores for each asteroid, derived from the primary data. 'ecasstds.tab' - Standard stars defining the ECAS photometric system. 'ecasfltr.tab' - Transmission curves for the eight filters used, and transmission and reflectance curves of the dichroic beam-splitter. 'ecasband.tab' - Effective wavelengths and bandpasses of the filters.   Media/Format : This dataset is released in the form of ASCII files which may be stored on disk or other magnetic medium and which may be distributed by ftp, email, real-time access by remote login, or by whatever means is most convenient.

Confidence Level Overview : The RMS errors of the individual observations are included in the dataset. The reliability of the data may be estimated by comparing multiple observations of each object.   Review : This dataset underwent a formal external review on March 31, 1995.