uranus88Uranus is approximately 3 billion km (1.89 billion miles) from the sun.It rotates on an extreme axial tilt of 97.77° and one day is only 17 hours on Uranus, however, it takes the planet 84 years to complete its rotation around the sun at an orbitalSnificant Events. March 13, 1781: British astronomer William Herschel discovers Uranus – the first new planet discovered since ancient times – while searching for faint stars. 1787-1851: Four Uranian moons are discovered