Siriometer
Encyclopedia
The siriometer is a rarely used astronomical measure equal to one million astronomical unit
s, i.e., one million times the average distance between the Sun and Earth. This distance is equal to about 149,597,870,000,000,000 meters (149.6 Pm) or about 15.813 light-year
s, which is roughly twice the distance from Earth to the star Sirius
.
It was proposed in 1911 by Carl V. L. Charlier.
Astronomical unit
An astronomical unit is a unit of length equal to about or approximately the mean Earth–Sun distance....
s, i.e., one million times the average distance between the Sun and Earth. This distance is equal to about 149,597,870,000,000,000 meters (149.6 Pm) or about 15.813 light-year
Light-year
A light-year, also light year or lightyear is a unit of length, equal to just under 10 trillion kilometres...
s, which is roughly twice the distance from Earth to the star Sirius
Sirius
Sirius is the brightest star in the night sky. With a visual apparent magnitude of −1.46, it is almost twice as bright as Canopus, the next brightest star. The name "Sirius" is derived from the Ancient Greek: Seirios . The star has the Bayer designation Alpha Canis Majoris...
.
It was proposed in 1911 by Carl V. L. Charlier.