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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+
A chain (ch) is a unit of length. It measures 66 feet, or 22 yards, or 100 links, or 4 rods (20.1168 m). There are 10 chains in a furlong, and 80 chains in one statute mile. ..more definition+
In relation to the base unit of [length] => (meters), 1 Siriometer (sir) is equal to 1.496E+17 meters, while 1 Chains (ch) = 20.1168 meters.| 12800 Siriometer | to common length units |
|---|---|
| 12800 sir | = 1.91488E+21 meters (m) |
| 12800 sir | = 1.91488E+18 kilometers (km) |
| 12800 sir | = 1.91488E+23 centimeters (cm) |
| 12800 sir | = 6.2824146981627E+21 feet (ft) |
| 12800 sir | = 7.5388976377953E+22 inches (in) |
| 12800 sir | = 2.0941382327209E+21 yards (yd) |
| 12800 sir | = 1.1898512685914E+18 miles (mi) |
| 12800 sir | = 202397.20959729 light years (ly) |
| 12800 sir | = 7.2373426440747E+24 pixels (PX) |
| 12800 sir | = 1.1968E+56 planck length (pl) |