15460 Manca

15460 Manca (provisional designation 1998 YD10) is a Koronian asteroid from the outer region of the asteroid belt, approximately 5 kilometers in diameter. The asteroid was discovered on 25 December 1998, by Italian astronomers Andrea Boattini and Luciano Tesi at Pistoia Mountains Astronomical Observatory in San Marcello Pistoiese, central Italy. It was named for Italian amateur astronomer Francesco Manca. == Orbit and classification == Manca belongs to the Koronis family, a family of stony asteroids in the outer main-belt with nearly ecliptical orbits. It orbits the Sun at a distance of 2.6–3.2 astronomical units (AU) once every 4 years and 12 months (1,810 days). Its orbit has an eccentricity of 0.09 and an inclination of 3° with respect to the ecliptic. The asteroid's observation arc begins 48 years prior to its official discovery observation, with a precovery taken at the Palomar Observatory in March 1950. == Physical characteristics == Manca has also been characterized as an X-type asteroid by Pan-STARRS photometric survey. === Rotation period === In August 2012, a rotational lightcurve was obtained for Manca from photometric observations made at the Palomar Transient Factory, California. Analysis of the lightcurve gave a rotation period of 7.2723 hours with a brightness variation of 0.22 magnitude (U=2). === Diameter and albedo === According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Manca measures 5.35 kilometers in diameter and its surface has an albedo of 0.295. The Collaborative Asteroid Lightcurve Link assumes a stony standard albedo for members of the Koronis family of 0.24, and calculates a diameter of 5.17 kilometers with an absolute magnitude of 13.6. == Naming == This minor planet was named for Italian amateur astronomer Francesco Manca (born 1966), member of the "Gruppo Astrofili Brianza" and an active observer of near-Earth objects, and potentially hazardous asteroids in particular, at Sormano Astronomical Observatory in northern Italy. The official naming citation was published by the Minor Planet Center on 13 October 2000 (M.P.C. 41388). == References == == External links == Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine) Dictionary of Minor Planet Names, Google books Minor Planet (15460) Manca, animation of CCD images Sormano Astronomical Observatory, IAU code 587 Asteroids and comets rotation curves, CdR Archived 29 July 2016 at the Wayback Machine – Observatoire de Genève, Raoul Behrend Discovery Circumstances: Numbered Minor Planets (15001)-(20000) – Minor Planet Center 15460 Manca at AstDyS-2, Asteroids—Dynamic Site Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info 15460 Manca at the JPL Small-Body Database