I came across this opening sequence to the 1979-1980 Buck Rogers syndicated show on YouTube. Who didn't like Buck Rogers.
Here you see Buck's shuttle launch and a brief mishap sends Buck Rogers out of his trajectory and returns him to earth "500 years later."
Seeing the clip you see his ship launched in the year 1987 and return 2491. This show definitely brings back memories.
But if you do the calculation:
1987 > 2491 = 504 years
Updated 12.26.17. New link.