Pluto was discovered by Clyde Tombaugh in 1930, much in the same way this animated gif works. By blinking two different images taken at different times, any object that moves is apparent. Originally classified as a planet, but when other objects of similar sizes started being discovered, it was reclassified as a dwarf planet.
Even with the Hubble Space telescope, only broad areas of light and dark were discernible, it took the fly by of the New Horizons probe in July 2015 to provide our first real look at Pluto. Pluto has 5 known moons, the largest is Charon, and at half the diameter, and 1/8 the mass, the pair almost forms a binary planet system.
Pluto completes one orbit around the Sun in 248 years, and its orbit more eccentric, and moderately inclined relative to the other planets, and at its closest is inside the orbit of Neptune.
Pluto making it's way across the star fields in Sagittarius.
Images taken on Aug 03, 2016, and Aug 05, 2016 with the 80 mm refractor and mono ccd camera..