Detection of proper motion in OQ208?

We report on an ongoing work aimed to detect the separation speed of the tw o hot-spots of the compact symmetric object OQ208. Comparing images at 8.4 GHz taken in 6 epoches between 1994 and 1997 we obtain an estimate of 0.058 +/-0.038 mas/year as the relative motions between two components of the rad io source. At the red-shift of OQ208 1 mas correspond to 1 pc, thus we obta in a projected jet speed of 0.095+/-0.062c. With an inclination of 45 degre es between the jets and the line of sight, we have an actual jet velocity o f 0.134+/-0.088c and therefore the kinematic age of the source is so young of 320+/-210 years.