Saturn Compass and Scale
The semi-major axis of Saturn's orbit about the sun is 9.5 astronomical units (A.U.) or roughly 1.4 billion km.
The planet (without rings) has a diameter of roughly 75,000 miles (120,000 km) at the equator.
The image was created from Hubble data from proposals 11566 and 11984: J. Nichols et al.
The science team comprises: J. Nichols, S. Badman, and E. Bunce (University of Leicester), J. Clarke (Boston University), S. Cowley (University of Leicester), F. Crary (Southwest Research Institute), M. Dougherty (Imperial College, London), J.-C. Gerard and D. Grodent (University of Liege), K. Hansen (University of Michigan), W. Kurth (University of Iowa), D. Mitchell (JHU/APL), W. Pryor (Central Arizona College), T. Stallard and L. Talboys (University of Leicester), and S. Wannawichian (Boston University).
F115LP (UV) and F125LP (UV)
This image was originally black and white and recorded only overall brightness. These brightness values were translated into a range of bluish hues. Such color "maps" can be useful in helping to distinguish subtly varying brightness in an image.