Spat (distance unit)

The spat (symbol S[1]) is an obsolete unit of distance used in astronomy.[1] It is equal to 1,000,000,000 kilometres (620,000,000 mi; 6.7 au).[1] A light-year is about 9460 S.

Not to be confused with Spat (angular unit).

References
  1. Nouvelle encyclopédie du monde. Vol. 16. Montréal, Toronto, Paris: Éditions Leland Ltée, Librairie Aristide Quillet. 1962. p. 5426.


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