Siriometer
The siriometer is a rarely used astronomical measure equal to one million astronomical units, i.e., one million times the average distance between the Sun and Earth.[1] This distance is equal to about 149,597,870,000,000,000 meters (149.6 Pm) or about 15.813 light-years, which is roughly twice the distance from Earth to the star Sirius.
It was proposed in 1911 by Carl V. L. Charlier.[2]
The proposed symbol for the siriometer is (Sm).
References
- On the units of distance in stellar astronomy, Malmquist, K. G., The Observatory, Vol. 48, p. 142-144 (1925)
- ↑ "WolframAlpha". Retrieved 25 April 2012.
- ↑ https://www.gutenberg.org/files/22157/22157-h/22157-h.htm Lectures on Stellar Statistics. Charlier. 1921
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