  The TGRS (Transient Gamma-Ray Spectrometer) experiment is a high-resolution
germanium detector launched on the WIND satellite on Nov. 1, 1994. Although
primarily intended to study gamma-ray bursts and solar flares, TGRS also has
the capability of studying slower transients (e.g. x-ray novae) and certain
steady sources. We present here results on the narrow 511 keV annihilation line
from the general direction of the Galactic Center accumulated over the period
Jan. 1995 through Oct. 1995. These results were obtained from the TGRS
occultation mode, in which a lead absorber occults the Galactic Center region
for 1/4 of each spacecraft rotation, thus chopping the 511 keV signal. The
occulted region is a band in the sky of width 16 degrees that passes through
the Galactic Center. We detect the narrow annihilation line from the galactic
center with flux = $(1.64\pm0.09)\times10^{-3} {photons} {cm}^{-2} {s}^{-1}$.
The data are consistent with a single point source at the galactic center, but
a distributed source of extent up to ~30 degrees cannot be ruled out. No
evidence for temporal variability on time scales longer than 1 month was found.
