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An arcsecond (arsec) or second of arc is 1/60 of an arcminute, 1/3600 of a degree, 1/1296000 of a turn, and π/648000 (about 1/206265) of a radian.
In relation to the base unit of [angle] => (radians), 1 Microarcseconds (μas) is equal to 4.8481368E-12 radians, while 1 Arcseconds (arcsec) = 4.848137E-6 radians.| 991000000000 Microarcseconds | to common angle units |
|---|---|
| 991000000000 μas | = 4.8045035688 radians (rad) |
| 991000000000 μas | = 4804.5035688 milliradians (mrad/mil) |
| 991000000000 μas | = 4893.8256750205 angular mils (µ mil) |
| 991000000000 μas | = 275.27776641264 degrees (°deg) |
| 991000000000 μas | = 305.86420204835 gradians (grad) |
| 991000000000 μas | = 16516.67847694 arcminutes (arcmin) |
| 991000000000 μas | = 990999.95911832 arcseconds (arcsec) |
| 991000000000 μas | = 4.5879609861745 sextants (60°) |
| 991000000000 μas | = 9.17590444767 signs (30°) |
| 991000000000 μas | = 0.76465992096371 turns (t) |