  In the 1-2.5 micron range, spectroscopic observations are made on the
AcuA-spec asteroids, whose spectra were obtained in a continuous covered mode
between 2.5-5.0 micron by AKARI. Based on the Bus-DeMeo taxonomy (DeMeo et al.
2009, Icarus, 202, 160), all the AcuA-spec asteroids are classified, using the
published and our observational data. Additionally, taking advantage of the
Bus-DeMeo taxonomy characteristics, we constrain the characteristic each
spectral type by combining the taxonomy results with the other physical
observational data from colorimetry, polarimetry, radar, and radiometry. As a
result, it is suggested that certain C-, Cb-, B-type, dark X-, and D-complex
asteroids have spectral properties compatible with those of anhydrous
interplanetary dust particles with tiny bright material, such as water ice.
This supports the proposal regarding the C-complex asteroids (Vernazza et al.
2015, ApJ, 806, 204; 2017, AJ, 153, 72). A combination of the Bus-DeMeo
taxonomy for AcuA-spec asteroids and the presumptions with other physical clues
such as the polarimetric inversion angle, radar albedo, and mid-infrared
spectroscopic spectra will be beneficial for surface material constraints, from
the AcuA-spec asteroid observations.
