P-34675 Range : 5.9 million km. ( 3.6 million miles ) Orbital Speed : 40,000 km/hr. or 25,000 mi/hr. The most recently discovered satellites of Neptune, 1989N5 and 1989N6, are shown in this Voyager 2 image. Their high orbital speed, in combination with the a 15 sec. exposure, has caused faint streaks. 1989N3 was discovered in early August, 1989. 1989N6 is distinguished by an orbit that is inclined 4.5 degrees to Neptune's equatorial plane, the only new satellite in the Neptune system to have noticably inclined orbit. 1989N5 cicles Neptune every 7.5 hours at a ditance of 25,000 km. or 15,500 miles above the cloud tops. 1989N6 orbits Neptune 23,00 km. or 14,000 miles from cloud tops every 7.1 hours
Photographer JPL