 Pluto, on the other hand, like other plutinos, follows a less inclined and less eccentric orbit and, protected by orbital resonance, can cross Neptune's orbit.In about 800 years, Eris will be closer to the Sun than Pluto for some time (see the graph at the left).As of 2007, Eris has an apparent magnitude of 18.7, making it bright enough to be detectable to some amateur telescopes.