The most unusual characteristic of uranus is its green color the icy cold temperature the axis tilted at 98° the methane atmosphere

the axis is tilted at 98 degrees

Explanation:

Uranus is blue, not green; it has an atmosphere of hydrogen and helium, not methane.  While it does have an icy cold temperature, that's not a very unusual characteristic for an outer planet.  However, the tilt of the axis is unusual; no other planet is tilted almost completely on its side!

i think its 100

i hope this !