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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+
In relation to the base unit of [length] => (meters), 1 Siriometer (sir) is equal to 1.496E+17 meters, while 1 Femtometers (fm) = 1.0E-15 meters.| 8681399870 Siriometer | to common length units |
|---|---|
| 8681399870 sir | = 1.298737420552E+27 meters (m) |
| 8681399870 sir | = 1.298737420552E+24 kilometers (km) |
| 8681399870 sir | = 1.298737420552E+29 centimeters (cm) |
| 8681399870 sir | = 4.2609495424934E+27 feet (ft) |
| 8681399870 sir | = 5.1131394509921E+28 inches (in) |
| 8681399870 sir | = 1.4203165141645E+27 yards (yd) |
| 8681399870 sir | = 8.0699801941164E+23 miles (mi) |
| 8681399870 sir | = 137272742897.37 light years (ly) |
| 8681399870 sir | = 4.9086144913606E+30 pixels (PX) |
| 8681399870 sir | = 8.11710887845E+61 planck length (pl) |