<Tr> <Td> Pluto III </Td> <Td> Hydra </Td> <Td> / ˈhaɪdrə / </Td> <Td> </Td> <Td> 65 x 45 x 25 ±? </Td> <Td> 0.005 ± 0.004 </Td> <Td> 7004647380000000000 ♠ 64 738 ± 3 </Td> <Td> 7001382017700000000 ♠ 38.201 77 ± 0.000 03 </Td> <Td> 1: 5.98 </Td> <Td> 0.005862 ± 0.000025 </Td> <Td> 0.242 ± 0.005 </Td> <Td> 23.3 </Td> <Td> 2005 / 06 / 15 </Td> </Tr> <Dl> <Dd> (*) All elements are with respect to the Pluto - Charon barycenter . The maximum distance between the centers of Pluto and Charon is 19,571 ± 4 km . </Dd> </Dl> <Dd> (*) All elements are with respect to the Pluto - Charon barycenter . The maximum distance between the centers of Pluto and Charon is 19,571 ± 4 km . </Dd> <Ul> <Li> <P> Pluto and its five moons, including the location of the system's barycenter . Sizes, distances and relative brightness of the bodies are to scale (click on image for detail). </P> </Li> </Ul>

Which of the following is not true of plutos largest moon