Changes

== Orbital characteristics of its moons ==

== Orbital characteristics of its moons ==

Pluto and Charon make a wide binary. The barycenter of the Pluto-Charon system lies ''above'' its surface, not within it. Remarkably, the eccentricity of the Pluto-Charon wide binary is nearly ''zero.'' The eccentricities of the orbits of Pluto's other known satellites ([[Styx]], [[Nix]], [[Kerberos]], and [[Hydra (moon)|Hydra]]) are slightly larger than zero, but are all less than one percent.

Pluto and Charon make a wide binary. The barycenter of the Pluto-Charon system lies ''above'' its surface, not within it. Remarkably, the eccentricity of the Pluto-Charon wide binary is nearly ''zero.'' The eccentricities of the orbits of Pluto's other known satellites ([[Styx (moon)|Styx]], [[Nix]], [[Kerberos]], and [[Hydra (moon)|Hydra]]) are slightly larger than zero, but are all less than one percent.

== Pluto's origin ==

== Pluto's origin ==