4832 Palinurus
4832 Palinurus is a Jupiter trojan from the Trojan camp, approximately in diameter. It was discovered on 12 October 1988, by American astronomer Carolyn Shoemaker at the Palomar Observatory in California. The dark D-type asteroid belongs to the [|90 largest Jupiter trojans] and has a short rotation period of 5.3 hours. It was named after Aeneas' navigator, Palinurus, from Greek mythology.
Orbit and classification
Palinurus is a Jovian asteroid in the so-called Trojan camp, located in the Lagrangian point, 60° behind Jupiter, orbiting in a 1:1 resonance with the Gas Giant. It is also a non-family asteroid of the Jovian background population.It orbits the Sun at a distance of 4.5–6.0 AU once every 12 years and 1 month. Its orbit has an eccentricity of 0.14 and an inclination of 19° with respect to the ecliptic. The body's observation arc begins at Palomar in September 1988, one month prior to its official discovery observation.
Physical characteristics
In the SDSS-based taxonomy, Palinurus is a dark D-type asteroid. Pan-STARRS' survey has also characterized it as a D-type, which is the most common spectral type among the larger Jupiter trojans. It has a high V–I color index of 1.00.Rotation period
In July 2010, a rotational lightcurve of Palinurus was obtained during eight consecutive nights by Italian astronomer Stefano Mottola at the Calar Alto Observatory in Spain. Lightcurve analysis gave a rotation period of hours with a brightness variation of 0.09 magnitude.In January 2015, photometric observations by Robert Stephens at the Center for Solar System Studies in Landers, California, determined a period of hours with an amplitude of 0.16 magnitude based on a fragmentary lightcurve.
Diameter and albedo
According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Palinurus measures 52.06 kilometers in diameter and its surface has an albedo of 0.071,while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for a C-type asteroid of 0.057 and calculates a similar diameter of 53.16 kilometers based on an absolute magnitude of 10.1.