Updated colors of Ixion and Quaoar using traced spectra from Marchi et al. (2003), and Makemake using processed spectrum from Alvarez-Candal et al. (2020).
Removed Gonggong's oblateness, which is based on outdated data (reported by pedroJ)
Removed Bond albedo values from Verbiscer et al. (2022), which are actually spherical albedo.
Updated info links of Gonggong, Quaoar, and Sedna to reflect the changed Wikipedia article names.