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We investigated the physical properties and dynamical evolution of Near EarthAsteroid (NEA) (190491) 2000 FJ10 in order to assess the suitability of thisaccessible NEA as a space mission target. Photometry and colour determinationwere carried out with the 1.54 m Kuiper Telescope and the 10 m Southern AfricanLarge Telescope during the object's recent favourable apparition in 2011-12.During the earlier 2008 apparition, a spectrum of the object in the 6000-9000Angstrom region was obtained with the 4.2 m William Herschel Telescope.Interpretation of the observational results was aided by numerical simulationsof 1000 dynamical clones of 2000 FJ10 up to 10^6 yr in the past and in thefuture. The asteroid's spectrum and colours determined by our observationssuggest a taxonomic classification within the S-complex although otherclassifications (V, D, E, M, P) cannot be ruled out. On this evidence, it isunlikely to be a primitive, relatively unaltered remnant from the early historyof the solar system and thus a low priority target for robotic sample return.Our photometry placed a lower bound of 2 hrs to the asteroid's rotation period.Its absolute magnitude was estimated to be 21.54+-0.1 which, for a typicalS-complex albedo, translates into a diameter of 130+-20 m. Our dynamicalsimulations show that it has likely been an Amor for the past 10^5 yr. Althoughcurrently not Earth-crossing, it will likely become so during the period 50 -100 kyr in the future. It may have arrived from the inner or central Main Belt> 1 Myr ago as a former member of a low-inclination S-class asteroid family.Its relatively slow rotation and large size make it a suitable destination fora human mission. We show that ballistic Earth-190491-Earth transfertrajectories with Delta-V < 2 km s^-1 at the asteroid exist between 2052 and2061.

Physical and dynamical characterisation of low Delta-V NEA (190491) 2000 FJ10