Photometric survey of 55 near-earth asteroids

Context. Near-earth objects (NEOs), thanks to their proximity, provide a unique opportunity investigate asteroids with diameters down dozens of meters. The study NEOs is also important because potential hazard the Earth. investigation small challenging from Earth as they are observable only for short time following discovery and can sometimes be reached again years or decades later. Aims. We aim derive visible colors perform an initial taxonomic classification main focus on smaller recent discoveries. Methods. Photometric observations were performed using 1.2 m telescope at Haute-Provence observatory 1.0 Pic du Midi in broadband Johnson-Cousins Sloan photometric systems. Results. present new 55 NEOs. Our shows that almost half (43%) our sample classified S+Q-complex members, 19% X-complex, 16% C-complex, 12% D-types, finally 6% 4% A- V-types, respectively. distribution observed H > 19 ≤ remains same. However, majority dataset D < 500 belong “silicate” group, which probably result observational bias towards brighter more accessible objects. “Carbonaceous” predominant among those Jovian Tisserand parameter Tj 3. These bodies could dormant extinct comets. median values absolute magnitude “carbonaceous” groups = 18.10 ± 0.95 19.50 1.20, whereas estimated 1219 729 344 226 m, “Silicate” have much lower Earth’s minimum orbit intersection distance (MOID) somewhat orbital inclination comparison About potentially hazardous mostly (almost 65%) represented by