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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.| 180400 Siriometer | to common length units |
|---|---|
| 180400 sir | = 2.698784E+22 meters (m) |
| 180400 sir | = 2.698784E+19 kilometers (km) |
| 180400 sir | = 2.698784E+24 centimeters (cm) |
| 180400 sir | = 8.8542782152231E+22 feet (ft) |
| 180400 sir | = 1.0625133858268E+24 inches (in) |
| 180400 sir | = 2.951426071741E+22 yards (yd) |
| 180400 sir | = 1.676946631671E+19 miles (mi) |
| 180400 sir | = 2852535.6727619 light years (ly) |
| 180400 sir | = 1.0200129788993E+26 pixels (PX) |
| 180400 sir | = 1.68674E+57 planck length (pl) |