Color-color diagram of J-H vs. J-Ks. Colors of 2024 PT₅ are plotted with a star. Colors of NEAs in the literature are plotted: Eros (circle) (Chapman & Morrison 1976), Itokawa (triangle) (Ishiguro et al. 2003), Apollo (square) (Hartmann et al. 1982), 2012 TC₄ (diamond and inverse triangle) (Urakawa et al. 2019; Reddy et al. 2019), Wilson-Harrington (left-pointing triangle) (Hartmann et al. 1982), and Duende (right-pointing triangle and pentagon) (de Leόn et al. 2013; Takahashi et al. 2014). Error bars indicate the 1σ uncertainties. Average near-infrared colors of S, C, and X types observed by VISTA-VHS are also indicated with rectangles (Popescu et al. 2016). The colors of the lunar rock core samples of Isaacson et al. (2011) and Kamo‘oalewa of Sharkey et al. (2021) are also shown with an octagon and elongated diamond, respectively. The error bars correspond to the uncertainties of the 1σ envelope of the compiled spectra in Fig. 12.