5023 Agapenor
5023 Agapenor is a Jupiter trojan from the Greek camp, approximately 30 kilometers in diameter. It was discovered on 11 October 1985, by American astronomer couple Carolyn and Eugene Shoemaker at the Palomar Observatory in California, United States. The Jovian asteroid was named for Agapenor from Greek mythology.
Orbit and classification
Agapenor orbits in the leading Greek camp at Jupiter's Lagrangian point, 60° ahead of its orbit . It orbits the Sun in the outer main-belt at a distance of 4.9–5.4 AU once every 11 years and 9 months. Its orbit has an eccentricity of 0.05 and an inclination of 12° with respect to the ecliptic.A precovery was taken at the discovering observatory in September 1985, extending the body's observation arc by 25 days prior to its official discovery observation.
Physical characteristics
Agapenor has been characterized as an X-type asteroid by PanSTARRS photometric survey.Rotation period
In September 2009, Agapenor was observed by Italian astronomer Stefano Mottola in a photometric survey of 80 Jupiter trojans, using the 1.2-meter reflector at Calar Alto Observatory in southeastern Spain. The obtained lightcurve gave a rotation period of hours with a brightness variation of in magnitude.Diameter and albedo
According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Agapenor measures 27.9 kilometers in diameter and its surface has an albedo of 0.17.The Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous of 0.057 and calculates a significantly larger diameter of 46.3 kilometers.