Data Set Abstract |
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. |