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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.| 4000 Siriometer | to common length units |
|---|---|
| 4000 sir | = 5.984E+20 meters (m) |
| 4000 sir | = 5.984E+17 kilometers (km) |
| 4000 sir | = 5.984E+22 centimeters (cm) |
| 4000 sir | = 1.9632545931759E+21 feet (ft) |
| 4000 sir | = 2.355905511811E+22 inches (in) |
| 4000 sir | = 6.5441819772528E+20 yards (yd) |
| 4000 sir | = 3.7182852143482E+17 miles (mi) |
| 4000 sir | = 63249.127999154 light years (ly) |
| 4000 sir | = 2.2616695762733E+24 pixels (PX) |
| 4000 sir | = 3.74E+55 planck length (pl) |