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The siriometer is a rarely used and an obsolete astronomical unit of length, defined to be equal to about one million astronomical units (au). One siriometer is approxim ..more definition+
A unit of length used to measure nuclear distances, = 10−15 meter. Named for the Italian physicist Enrico Fermi (1901–1954). Now obsolete, replaced by the SI term femtometer (symbol, fm); 1 fermi = 1 femtometer.
In relation to the base unit of [length] => (meters), 1 Siriometer (sir) is equal to 1.496E+17 meters, while 1 Fermi (fermi) = 1.0E-15 meters.| 47900 Siriometer | to common length units |
|---|---|
| 47900 sir | = 7.16584E+21 meters (m) |
| 47900 sir | = 7.16584E+18 kilometers (km) |
| 47900 sir | = 7.16584E+23 centimeters (cm) |
| 47900 sir | = 2.3509973753281E+22 feet (ft) |
| 47900 sir | = 2.8211968503937E+23 inches (in) |
| 47900 sir | = 7.8366579177603E+21 yards (yd) |
| 47900 sir | = 4.452646544182E+18 miles (mi) |
| 47900 sir | = 757408.30778987 light years (ly) |
| 47900 sir | = 2.7083493175873E+25 pixels (PX) |
| 47900 sir | = 4.47865E+56 planck length (pl) |