On 10/07/15 12:07, Phil Hobbs wrote:
On 7/9/2015 9:14 PM, Jeff Liebermann wrote:
It would be a major disaster if a leap second were
thrown into the timing if you're tracking a spacecraft such as Voyager
1 moving at 17 km/sec (38,000 mph).
You'd be off by 17 km. Is Voyager 1's position known to that accuracy?
Didn't think so.

And yet if you were aiming at Pluto via a slingshot around Venus, you
don't want to be 17km off on approach to Venus. I can't do the math, but
I suspect it's rather closer to 17cm.