Pioneer 11 flew within 786,000 kilometers of Callisto during its December 1974 flyby of Jupiter, capturing images and data that helped reveal the moon's heavily cratered surface.

Pioneer 11 made a brief flyby of Ganymede during its Jupiter encounter on December 2, 1974, capturing images from a distance of 446,250 kilometers that helped refine understanding of the moon's size and orbital characteristics.

Pioneer 11 captured the first close-up images of Io during its December 1974 flyby of Jupiter, revealing the moon's unusual orange color and lack of impact craters.

Pioneer 11's flyby of Europa occurred at a distance of 586,000 kilometers during its December 1974 encounter with the Jupiter system.

Pioneer 11 completed the first-ever flyby of Jupiter's polar regions on December 2, 1974, passing within 26,400 miles of the gas giant while capturing detailed images and collecting data about its intense radiation belts.

Pioneer 11 conducted a distant flyby of Saturn's moon Iapetus on September 1, 1979, capturing low-resolution images from approximately 966,000 kilometers away that helped confirm the moon's unusual two-toned coloration.

This encounter did not occur - Pioneer 11 flew by Saturn and its moons in 1979 but did not encounter Phoebe, which orbits Saturn in a distant, retrograde orbit.

Pioneer 11 made a distant flyby of Saturn's irregular moon Hyperion on September 1, 1979, making no significant observations of the small moon during its historic Saturn system encounter.

Pioneer 11 captured distant images of Dione during its flyby of the Saturn system on September 1, 1979, but did not approach close enough for detailed observations of the moon's surface.

Pioneer 11 captured distant images of Mimas during its 1979 Saturn flyby, providing early data about the moon's surface features including its distinctive Herschel Crater.

Pioneer 11 completed the first flyby of Saturn on September 1, 1979, passing within 21,000 kilometers of the planet's cloud tops and discovering a new ring and two previously unknown moons.

Pioneer 11 conducted a brief flyby of Saturn's moon Tethys during its Saturn encounter on September 1, 1979, capturing distant images of the icy satellite.

Pioneer 11 passed within 2,500 kilometers of Enceladus on September 1, 1979, capturing low-resolution images that revealed little detail about the moon's surface features.

Pioneer 11 flew past Rhea at a distance of 345,000 kilometers on September 1, 1979, capturing the first detailed images of Saturn's second-largest moon.

Pioneer 11 made distant observations of Titan during its Saturn flyby on September 1, 1979, measuring the moon's surface temperature and helping confirm the presence of its thick atmosphere.