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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.| 426000000000 Siriometer | to common length units |
|---|---|
| 426000000000 sir | = 6.37296E+28 meters (m) |
| 426000000000 sir | = 6.37296E+25 kilometers (km) |
| 426000000000 sir | = 6.37296E+30 centimeters (cm) |
| 426000000000 sir | = 2.0908661417323E+29 feet (ft) |
| 426000000000 sir | = 2.5090393700787E+30 inches (in) |
| 426000000000 sir | = 6.9695538057743E+28 yards (yd) |
| 426000000000 sir | = 3.9599737532808E+25 miles (mi) |
| 426000000000 sir | = 6736032131909.9 light years (ly) |
| 426000000000 sir | = 2.4086780987311E+32 pixels (PX) |
| 426000000000 sir | = 3.9831E+63 planck length (pl) |