On identifying the neutron star that was born in the supernova that   placed 60Fe onto the Earth
  Recently, 60Fe was found in the Earth crust formed in a nearby recent supernova (SN). If the distance to the SN and mass of the progenitor of that SN was known, then one could constrain SN models. Knowing the positions, proper motions, and distances of dozens of young nearby neutron stars, we can determine their past flight paths and possible kinematic origin. Once the birth place of a neutron star in a SN is found, we would have determined the distance of the SN and the mass of the SN progenitor star. 
R. Neuh\"auser, N. Tetzlaff, T. Eisenbeiss, M. M. Hohle
astro-ph.SR