siriometer

名词 n.
中文释义

英文释义

名词 n.
  1. A unit of distance equal to one million astronomical units or 15.813 light-years.
    — The siriometer dates its pedigree from the founder of stellar astronomy, William Herschel. As is well known, the distance unit used by Herschel is the mean distance of the first magnitude stars, which distance was called by him the distance of Sirius.

词形变化

siriometers plural

词源

From Sirius + -o- + meter. It is roughly twice the distance from Earth to the star Sirius.
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