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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.| 173000 Siriometer | to common length units |
|---|---|
| 173000 sir | = 2.58808E+22 meters (m) |
| 173000 sir | = 2.58808E+19 kilometers (km) |
| 173000 sir | = 2.58808E+24 centimeters (cm) |
| 173000 sir | = 8.4910761154856E+22 feet (ft) |
| 173000 sir | = 1.0189291338583E+24 inches (in) |
| 173000 sir | = 2.8303587051619E+22 yards (yd) |
| 173000 sir | = 1.6081583552056E+19 miles (mi) |
| 173000 sir | = 2735524.7859634 light years (ly) |
| 173000 sir | = 9.7817209173822E+25 pixels (PX) |
| 173000 sir | = 1.61755E+57 planck length (pl) |