VLBA IMAGE OF SGR-A-ASTERISK AT LAMBDA=1.35-CM

The compact non-thermal radio source at the Galactic Center, Sgr A, h as been imaged, at lambda=1.35 cm, for the first time with VLBI techni ques. We observed Sgr A, on 1991 June 23, with an array formed by 5 o f the VLBA telescopes and the phased-VLA. The maximum angular resoluti on corresponded to a fringe spacing of 6.0x2.8 milliarcseconds in posi tion angle 3-degrees (measured east from north). The observed surface brightness distribution of Sgr A is best modelled by an elliptically shaped gaussian component with parameter values: flux density 1.07 +/- 0.15 Jy, major axis of FWHM = 2.58 0.08 milliarcseconds in position a ngle = 79-degrees +/- 6-degrees, and axial ratio = 0.5 +/- 0.2. The an gular size of this model agrees well with the expected scattering size of Sgr A. There is no clear evidence of any change in the source str ucture between our two sets of lambda=1.35 cm VLBI observations on Sgr A which were separated by 6 years.