Comparison of the linear polarization degrees of 1999 JD₆ and other near-Earth asteroids in the red region (about 650 ± 50 nm). The open circles indicate data corresponding to 1999 JD₆. Other symbols denote data for (152679) 1998 KU₂ (open black crosses; Kuroda et al. 2018), (3200) Phaethon (cyan triangles; Ito et al. 2018; Shinnaka et al. 2018), (1566) Icarus (blue squares; Ishiguro et al. 2017), (1685) Toro (green pluses; Kiselev et al. 1990), (4179) Toutatis (orange crosses; Ishiguro et al. 1997; Mukai et al. 1997), and (33342) 1998 WT₂₄ (dark green diamonds; Kiselev et al. 2002). 1999 JD₆ exhibits a different polarimetric behavior than was reported in previous studies.