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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 Gigameters (Gm) = 1000000000 meters.| 251000 Siriometer | to common length units |
|---|---|
| 251000 sir | = 3.75496E+22 meters (m) |
| 251000 sir | = 3.75496E+19 kilometers (km) |
| 251000 sir | = 3.75496E+24 centimeters (cm) |
| 251000 sir | = 1.2319422572178E+23 feet (ft) |
| 251000 sir | = 1.4783307086614E+24 inches (in) |
| 251000 sir | = 4.1064741907262E+22 yards (yd) |
| 251000 sir | = 2.3332239720035E+19 miles (mi) |
| 251000 sir | = 3968882.7819469 light years (ly) |
| 251000 sir | = 1.4191976591115E+26 pixels (PX) |
| 251000 sir | = 2.34685E+57 planck length (pl) |