Uranus in Natural Colors
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.
The Uranus ACS/HRC data are from the HST proposal 9725: E. Karkoschka and M. Tomasko (U. AZ)
The Uranus STIS/CCD data are from the HST proposal 9035: E. Karkoschka (U. AZ), M. Lemmon (Texas A&M), M. Tomasko (U. AZ)
Note: Uranus images within this press release were taken with ACS/HRC. They were color calibrated using STIS/CCD data of Uranus.
ACS/HRC: F435W, F550M, F658N, F660N, F775W, F814W, F850LP, and F892N
STIS/CCD: G430L and G750L
NASA and Erich Karkoschka, University of Arizona