[yarddog]

I had never thought about it but they all are Roman names except for Uranus which is Greek.

[Mr Ramsbotham]

I had never thought about it but they all are Roman names except for Uranus which is Greek.

That's because Greeks have a special interest in Uranus.

[Verginius Rufus]

Uranus is the Latin version of the Greek name Ouranos. Likewise with Pluto—it’s a Latinized version of a Greek name (Plouton).