Uranus

The semi-major axis of Uranus's orbit about the sun is 19.18 Astronomical Units (A.U.) or roughly 2.9 billion km.

Uranus (without rings) has a diameter of roughly 32,000 miles (51,000 km) at the equator.

This image was created from HST data from the following proposal 10805: PI: L. Sromovsky (University of Wisconsin, Madison), H. Hammel (Space Science Institute), and K. Rages (SETI Institute).

FR782N at 750nm, 770 nm, and 790 nm

NASA, ESA, L. Sromovsky (University of Wisconsin, Madison), H. Hammel (Space Science Institute), and K. Rages (SETI)

This image is a composite of many separate exposures made by the ACS instrument on the Hubble Space Telescope. A single ramp filter was used to sample several wavelength ranges. The color results from assigning different hues (colors) to each monochromatic image. In this case, the assigned colors are:

Blue: FR782N (750 nm )
Green: FR782N (770 nm)
Red: FR782N (790 nm)