Note to those concerned by the possibility of a close approach by Eris:

From Wikipedia:

Eris has an orbital period of 557 years, and as of 2009 lies at 96.7 astronomical units from the Sun,[11] almost its maximum possible distance. (Its aphelion is 97.5 AU.) Eris came to perihelion between 1698[5] and 1699,[34] to aphelion around 1977,[34] and will return to perihelion around 2256[34] to 2258.[35] Eris and its moon are currently the most distant known objects in the Solar System apart from long-period comets and space probes.[36]