How fast must Voyager travel to leave the solar system?

[SPB COOPERATOR]

I have read articles about the Voyager probes leaving the solar system (or not) depending on what definition is used. So, another definition - do the Voyagers have sufficient velocity to escape the Sun's gravitati0nal influence?

 

[russ_watters]

...do the Voyagers have sufficient velocity to escape the Sun's gravitati0nal influence?

Yes.

 

[PeroK]

Technically, the Sun's gravitational influence extends indefinitely. The Voyager spacecraft , however, are not in an orbit of the Sun - they have more than what is known as the escape velocity. Eventually, the primary gravitational influence will be another nearby star.

 

[SPB COOPERATOR]

Ooops I overlooked the point the the Sun's Ve of 617.5 km/s is from the sun itself, not the solar system. Does the solar system itself have Ve and even the galaxy itself?

 

[PeroK]

Ooops I overlooked the point the the Sun's Ve of 617.5 km/s is from the sun itself, not the solar system. Does the solar system itself have Ve and even the galaxy itself?

This page gives you an estimated galactic escape velocity relative to the Sun of 550 km/s:

https://en.wikipedia.org/wiki/Milky_Way

Voyager is traveling at $15 km/s$ relative to the Sun.