 Kerberos has a high albedo or reflectivity similar to Pluto's other small moons, likely due to the presence of water ice on its surface.Before the "New Horizons" flyby, Kerberos was initially thought to have a larger size and a darker surface.Like the other small moons of Pluto, Kerberos is not tidally locked and its rotation is chaotic, varying quickly over geological timescales.