The distance from Earth to the star Sirius is then approximately 0.54 siriometers.
[3] The unit was proposed in 1911 by Carl V. L. Charlier,[3] who worked on stellar statistics.
Frank Dyson (the Astronomer Royal) objected to the name siriometer, because "it suggests a machine for measuring".
[6] The first General Assembly of the International Astronomical Union in 1922 adopted the parsec as the standard unit of stellar distances,[7] which simplified the definition of absolute magnitude.
[3] Modern professional astronomers use the parsec as their primary unit for distances larger than the Solar System.