659 Nestor is a Jupiter trojanasteroid orbiting the Sun. Along with the other Jupter trojans in the Greek Camp, it orbits in the same orbit as Jupiter, about 60 degrees ahead of the planet.
It was seen on 30th June 2006 when it occulted TYC 6854-00630. The length of time the occultation lasted (9.52 seconds) equates to a size of at least 109 km diameter.
It was found by Max Wolf in 1908. Its provisional name was 1908 CS.