This data set contains 166 laboratory spectra of 108 meteorite samples, as reported
by M. J. Gaffey in Gaffey (1976) [GAFFEY1976]. This in turn was based on his PhD
thesis work (Gaffey 1974 [GAFFEY1974]).

The data set contains observations obtained with the NASA IRTF SpeX instrument covering the 0.7 to 2.5 micron near-infrared portion of the spectrum. The data set archives reduced, calibrated spectra which were obtained and used in Sherry Fieber-Beyer's Ph.D. dissertation at the University of North Dakota and archives reduced, calibrated spectra subsequent 2010. The research focused on asteroids in a zone centered on the 3:1 resonance. These spectra were used to mineralogically characterize asteroids in this zone in an attempt to identify their meteorite analogs.

The Asteroid Polarimetric Database (APD) is a collection of asteroid polarimetry
results compiled by D.F. Lupishko of Karazin Kharkiv National University, Ukraine. It
is intended to include most asteroid polarimetry available through February 15, 2019.

Photometric observations of 125 asteroids, including absolute magnitudes, reported in Wisniewski et al. 1997.

This data set is a collection of asteroid taxonomic classifications from various classification methods, collected from the literature.

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), though several minor changes
were made in instrumentation and in portions of the data reduction process.

This data set contains low-resolution (R~150) near-infrared (0.7-2.5 microns) spectra of 90 main belt asteroids observed with the SpeX instrument on the NASA Infrared Telescope Facility (IRTF) on Mauna Kea, Hawai'i. This data set archives reduced, calibrated spectra of targets of opportunity observed from 2001 to 2012.

This data set is a compilation of published diameters, albedos, and densities for
Transneptunian Objects (TNOs) and Centaurs. A total of 194 objects are listed, many
with more than one entry. This version covers published values through 31 March
2018.

This data set is intended to include published broadband colors of centaurs and Transneptunian Objects (TNOs) published through March 2014. It includes some comets with Centaur orbits. It supersedes all versions of the TNO colors data set EAR-A-3-RDR-TNO-PHOT.

This data set contains asteroid dynamical family memberships for 122 families calculated from synthetic proper elements, including high-inclination families. These families were calculated by David Nesvorny (Nesvorny et al. 2015) using his code based on the Hierarchical Clustering Method (HCM) described in Zappala et al. (1990, 1994). The input synthetic proper elements for 384,337 numbered asteroids were calculated by Knezevic and Milani.