659 Nestor /ˈnɛstər/ is a dark Jupiter trojan from the Greek camp, approximately 110 kilometers (68 miles) in diameter.
It was discovered on 23 March 1908, by German astronomer Max Wolf at Heidelberg Observatory in southern Germany, and named after King Nestor from Greek mythology.
[5] On 30 June 2006, a dimensional estimate was also obtained from an occultation event by David Gault, when the asteroid eclipsed the star "TYC 6854-00630" (as designated in the Tycho Catalogue) for a duration of 9.52 seconds.
Based on this time period, a cross section with the minor and major occultation axes at 109 × 109 kilometers was inferred.
[14] In August 1995, Italian astronomer Stefano Mottola observed the asteroid with the Bochum 0.61-metre Telescope at ESO's La Silla Observatory, Chile, and derived a period of 15.98±0.03 hours with a brightness variation of 0.31±0.01 magnitude (U=3).