(55565) 2002 AW197 (provisional designation 2002 AW197) is a classical, non-resonant trans-Neptunian object from the Kuiper belt in the outermost region of the Solar System, also known as a cubewano.
It is the tenth-intrinsically-brightest known trans-Neptunian objct,[23] and with a likely diameter of at least 600 kilometers (400 miles), it is approximately tied with 2002 MS4 and 2013 FY27 (to within measurement uncertainties) as the largest unnamed object in the Solar System.
[16] Tancredi notes that photometric observations suggest that it is a spheroid with small albedo spots.
[24] However, its low albedo suggests it does not have planetary geology, as it should if it were a dwarf planet.
[8] ESO analysis of spectra reveals a strong red slope and no presence of water ice[25] (in contrast to Quaoar, also red) suggesting organic material (see comparison of colours and typical composition inferred from spectra of the TNOs).