1999ApJ...518L..33Y

The absolute position of the compact radio source at the dynamical center of the Galaxy, Sagittarius A*, was known only to an accuracy of 0".2 in spite of its accurate location with respect to near-IR stellar sources to within 30 mas. To remedy this poor positional accuracy, we have selected 15 high-resolution, high-frequency VLA observations of Sgr A* carried out in the last 13 years and determined the weighted average position with the average epoch 1992.4 to be at α, δ1950=17^h42^m29{fs}3076±0{fs}0007, -28°59'18".484±0".014 or α, δ2000=17^h45^m40{fs}0383±0{fs}0007, -29°00'28".069±0".014, which agrees with earlier published values to within the 0".2 error bars of the earlier measurements. An accurate absolute position of Sgr A* can be useful for its identification with sources at other wavelengths, particularly in soft and hard X-rays, with implications for the models of a massive black hole at the Galactic center.