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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+
Plethron is a measurement used in Ancient times, equal to 100 Greek feet (pous). It was roughly the width of a typical athletic running-track, and was used as the st ..more definition+
In relation to the base unit of [length] => (meters), 1 Siriometer (sir) is equal to 1.496E+17 meters, while 1 Greek Plethron (pleth) = 30.8 meters.| 3840000000 Siriometer | to common length units |
|---|---|
| 3840000000 sir | = 5.74464E+26 meters (m) |
| 3840000000 sir | = 5.74464E+23 kilometers (km) |
| 3840000000 sir | = 5.74464E+28 centimeters (cm) |
| 3840000000 sir | = 1.8847244094488E+27 feet (ft) |
| 3840000000 sir | = 2.2616692913386E+28 inches (in) |
| 3840000000 sir | = 6.2824146981627E+26 yards (yd) |
| 3840000000 sir | = 3.5695538057743E+23 miles (mi) |
| 3840000000 sir | = 60719162879.188 light years (ly) |
| 3840000000 sir | = 2.1712027932224E+30 pixels (PX) |
| 3840000000 sir | = 3.5904E+61 planck length (pl) |