3 ms·

Here's an interesting graph: http://en.wikipedia.org/wiki/File:Voyager_2_velocity_vs_distance_from_sun.svg http://en.wikipedia.org/wiki/File:Voyager_2_velocity

Here's an interesting graph: http://en.wikipedia.org/wiki/File:Voyager_2_velocity_vs_distance_from_sun.svg http://en.wikipedia.org/wiki/File:Voyager_2_velocity_vs_dist... Looks like Uranus gave a tiny boost and Neptune a negative boost -- not through any intrinsic property of the planet, mind you, just the constraints applied when you want to tour the whole solar system without burning any fuel.

dalke 14y ago
That's the same graph as the JPL link I pointed out earlier, but clearer and with more description. It shows that my earlier reading was incorrect. It looks like the delta-V from Jupiter is 11km/s, Saturn is 8km/s, Uranus is 1km/s and Neptune, as you point out, is a negative delta V w.r.t distance from the Sun. Note that the comment says it's because Voyager 2 deflected out of the plane of the ecliptic as a consequence of doing a flyby of Triton, and not because of fuel constraints. In any case, I had forgotten that Voyager I did not do the grand tour of the giants. I haven't been able to find a similar velocity profile for Voyager I.