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The table on the "Exploration of Jupiter" Wikipedia page suggests Dragonfly will be the first mission to the outer planets that will not use a gravity assist from Jupiter. Is there a source confirming this?

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Here is a paper which among other things includes the results of a trajectory search. They say

Gravity assists of Earth, Venus, and Mars were included with a patched conics assumption. Jupiter was immediately discarded as it is out of phase during the desired time period.

The trajectories proposed in that paper involve multiple Earth and Venus flybys. I guess if the mission was delayed a few years then Jupiter might come back into play.

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    $\begingroup$ I'd guesstimate a landing in 2042 if a Jupiter flyby is included. Relative positions of Jupiter and Saturn repeat every 21 years. $\endgroup$ – asdfex Apr 5 at 12:00

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