The largest contribution to the fireball-rich Leonid outburst of 1998 has previously been shown to be a component of resonant meteoroids ejected from Comet 55P/Tempel-Tuttle in 1333. By integrating particles with a suitable range of initial orbits, we demonstrate here that the cross section of the arc of resonant particles from 1333 through which the Earth passed in 1998 is quite compact and reflects details of the particles' initial ejection velocities. This is because resonant motion prevents streams of particles from dispersing as quickly as non-resonant particles.