  We report on optical polarimetric observations of two Apollo type near-Earth
asteroids, (422699) 2000 PD3 and (3200) Phaethon, and BVRI photometric
observations of 2000 PD3 using the 1.6m Pirka telescope in 2017. We derived the
geometric albedo of pv = 0.22 +- 0.06 and the color indices (B-V = 0.282 +-
0.072, V-R = 0.198 +- 0.035 and V-I = 0.203 +- 0.022) for 2000 PD3 which are
consistent with those of S-type asteroids (including Q-types). The effective
diameter of 2000 PD3 was derived as 0.69 +- 0.15 km using our derived geometric
albedo. We found that our polarimetric data of Phaethon in 2017 is deviated
from the polarimetric profile taken at different epoch of 2016 using the
identical instrument setting (Ito et al., 2018). This result suggests that
Phaethon would have a regional heterogeneity in grain size and/or albedo on its
surface.
