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A second of arc, or arcsecond (arsec) 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 Second Of Arc (SOA) is equal to 4.848137E-6 radians, while 1 Rotations (rot) = 6.28319 radians.| 3900 Second Of Arc | to common angle units |
|---|---|
| 3900 SOA | = 0.0189077343 radians (rad) |
| 3900 SOA | = 18.9077343 milliradians (mrad/mil) |
| 3900 SOA | = 19.259254207801 angular mils (µ mil) |
| 3900 SOA | = 1.0833333332975 degrees (°deg) |
| 3900 SOA | = 1.2037037711382 gradians (grad) |
| 3900 SOA | = 65.000049159814 arcminutes (arcmin) |
| 3900 SOA | = 3900 arcseconds (arcsec) |
| 3900 SOA | = 0.01805554852091 sextants (60°) |
| 3900 SOA | = 0.036111028074866 signs (30°) |
| 3900 SOA | = 0.0030092571289425 turns (t) |