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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.| 4640000000 Siriometer | to common length units |
|---|---|
| 4640000000 sir | = 6.94144E+26 meters (m) |
| 4640000000 sir | = 6.94144E+23 kilometers (km) |
| 4640000000 sir | = 6.94144E+28 centimeters (cm) |
| 4640000000 sir | = 2.277375328084E+27 feet (ft) |
| 4640000000 sir | = 2.7328503937008E+28 inches (in) |
| 4640000000 sir | = 7.5912510936133E+26 yards (yd) |
| 4640000000 sir | = 4.3132108486439E+23 miles (mi) |
| 4640000000 sir | = 73368988479.019 light years (ly) |
| 4640000000 sir | = 2.6235367084771E+30 pixels (PX) |
| 4640000000 sir | = 4.3384E+61 planck length (pl) |