Pluto has not orbited the Sun since the planet was discovered (and named) 248 years ago - it has obviously orbited the Sun at some stage but not as 'Pluto'.
Sort of right - Pluto was discovered & classified as a planet in 1930, then de-classified 76 years later in 2006. As it takes it 248 years to orbit the Sun, it never managed to orbit it as a planet...
Over to you.