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Potentially hazardous asteroids (PHAs) represent a unique opportunity forphysical characterization during their close approaches to Earth. The proximityof these asteroids makes them accessible for sample-return and manned missions,but could also represent a risk for life on Earth in the event of collision.Therefore, a detailed mineralogical analysis is a key component in planningfuture exploration missions and developing appropriate mitigation strategies.In this study we present near-infrared spectra (0.7-2.55 microns) of PHA(214869) 2007 PA8 obtained with the NASA Infrared Telescope Facility during itsclose approach to Earth on November 2012. The mineralogical analysis of thisasteroid revealed a surface composition consistent with H ordinary chondrites.In particular, we found that the olivine and pyroxene chemistries of 2007 PA8are Fa18(Fo82) and Fs16, respectively. The olivine-pyroxene abundance ratio wasestimated to be 47%. This low olivine abundance and the measured bandparameters, close to the H4 and H5 chondrites, suggest that the parent body of2007 PA8 experienced thermal metamorphism before being catastrophicallydisrupted. Based on the compositional affinity, proximity to the J5:2resonance, and estimated flux of resonant objects we determined that theKoronis family is the most likely source region for 2007 PA8.

Composition of Potentially Hazardous Asteroid (214869) 2007 PA8: An H Chondrite from the Outer Asteroid Belt