  The emission of energetic gluons in $\tt$ production in $\ee$ annihilation
can have important experimental consequences, in particular on top quark mass
measurements. We present compact, analytical expressions for the gluon energy
distribution and its average value at first order in QCD perturbation theory.
Our results are valid for arbitrary masses, collision energies and production
currents. We pay particular attention to top quark production near threshold,
and show that in certain cases the soft gluon approximation is insufficient to
describe the radiation spectrum.
