Possible Transfer of Life by Earth-Grazing Objects to Exoplanetary
  Systems
  Recently, a 30-cm object was discovered to graze the Earth's atmosphere and
shift into a Jupiter-crossing orbit. We use the related survey parameters to
calibrate the total number of such objects. The number of objects that could
have exported terrestrial microbes out of the Solar System is in the range $2
\times 10^{9}$--$3 \times 10^{11}$. We find that $10^{7}$--$10^{9}$ such
objects could have been captured by binary star systems over the lifetime of
the Solar System. Adopting the fiducial assumption that one polyextremophile
colony is picked up by each object, the total number of objects carrying living
colonies on them upon capture could be $10$--$10^3$.
