4348 Poulydamas
4348 Poulydamas is a large Jupiter Trojan from the Trojan camp, approximately in diameter. It was discovered on 11 September 1988, by American astronomer Carolyn Shoemaker at the Palomar Observatory in California. The assumed C-type asteroid belongs to the [|40 largest Jupiter trojans] and has a rotation period of 9.9 hours. It was named after Poulydamas from Greek mythology.
Orbit and classification
Poulydamas is a dark Jovian asteroid orbiting in the trailering Trojan camp at Jupiter's Lagrangian point, 60° behind its orbit in a 1:1 resonance . It is also a non-family asteroid of the Jovian background population.It orbits the Sun at a distance of 4.7–5.7 AU once every 12 years. Its orbit has an eccentricity of 0.10 and an inclination of 8° with respect to the ecliptic. The body's observation arc begins with a precovery taken at Palomar in October 1953, nearly 35 years prior to its official discovery observation.
Physical characteristics
Poulydamas is an assumed, carbonaceous C-type asteroid.Rotation period
In December 1990, a first rotational lightcurve of Poulydamas was obtained by Stefano Mottola and Mario Di Martino using the 1.52-meter Loiano Telescope at the Bologna Observatory in Italy. Lightcurve analysis gave a well-defined rotation period of hours with an amplitude of magnitude.In October 2013, astronomers at the Palomar Transient Factory measured a period of 9.9214 hours and a brightness variation of 0.23 magnitude in the R-band.
Between 2015 and 2018, photometric observations by Robert Stephens at the Center for Solar System Studies, California, rendered four similar, rotational periods of 9.88, 9.922, 9.937 and 9.941 hours with four corresponding amplitudes of 0.19, 0.34, 0.27 and 0.29 magnitude