A metric unit of distance equal to 1012 meters or 109 kilometers. This is about 6.6846 astronomical units. The distance from Saturn to the Sun is about 1.43 terameters
Russ Rowlett (Director), How Many? A Dictionary of Units of Measurement, Center for Mathematics and Science Education University of North Carolina, USA 2005. http://www.unc.edu/~rowlett/units/dictA.html, (Unit of Meas and Covr Factors - Amer) {608}