55565 Aya (provisional designation 2002 AW197) is a large trans-Neptunian object in the classical Kuiper belt. It was discovered on 10 January 2002 by astronomers at Palomar Observatory.
Aya is a large object, most likely at least 700 km in diameter. It has a rotation period of 8.8 hours and has a moderately red color. The object's brightness does not significantly vary as it rotates, which indicates it is likely spheroidal.