https://skyandtelescope.org/astronomy-news/nasas-juno-mission-makes-closest-flyby-past-io/



Juno mission has made its closest approach yet to Io, Jupiter’s innermost Galilean moon, passing within 1,500 kilometers (930 miles) of the surface on February 3rd. These were the closest Io passes that Juno will make (though the record still goes to the Galileo mission, which passed 112 miles (181 kilometers) from Io in 2001).