Let's take a look at my favorite friends V1 & V2.
This data is correct for July 30th, 2009

Pioneer 10 Pioneer 11 Voyager 2 Voyager 1 New Horizons Distance from Sun (AU) 98.784 79.008 89.678 110.642 14.074 Speed relative to Sun (km/s) 12.092 11.460 15.499 17.086 16.929 Speed relative to Sun (AU/year) 2.551 2.418 3.270 3. ( Read more... )