  GRB 970228 is the first gamma ray burst for which prolonged post-burst
transient x-ray, optical, and infrared emission has been detected. Recent
Hubble Space Telescope observations show that the transient consists of two
components: a point source, which is known to be fading, and an extended
source, which is possibly fading. I fit standard fireball remnant models to the
first month of x-ray, optical, and infrared measurements, which may be done
without assuming a GRB distance scale. I show that its emission is consistent
with that of the remnant of a relativistically expanding impulsive fireball in
which a forward shock dominates the emission of the GRB event: the piston
model. However, two discrepant measurements may indicate that the post-burst
flux varies by factors of approximately 3 on timescales of days or weeks.
Furthermore, using the HST observations and the fitted model, I show that the
extended object probably is fading, which may place GRB 970228 at galactic halo
distances.
