In the time it took scientists to discover
it, let it be a planet for 76 years, take
away its planet status, say it might be a
planet again, then change their minds,
Pluto never made a full orbit around the
sun. Due to it taking 248.09 Earth years
for Pluto to circle the sun, we won’t see it
complete an orbit until March 23, 2178. Source Source 2