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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 Rotations (rot) is equal to 6.28319 radians, while 1 Second Of Arc (SOA) = 4.848137E-6 radians.| 398000 Rotations | to common angle units |
|---|---|
| 398000 rot | = 2500709.62 radians (rad) |
| 398000 rot | = 2500709620 milliradians (mrad/mil) |
| 398000 rot | = 2547201135.1182 angular mils (µ mil) |
| 398000 rot | = 143280101.4262 degrees (°deg) |
| 398000 rot | = 159200121.61984 gradians (grad) |
| 398000 rot | = 8596812587.6626 arcminutes (arcmin) |
| 398000 rot | = 515808365151.4 arcseconds (arcsec) |
| 398000 rot | = 2388000.7601237 sextants (60°) |
| 398000 rot | = 4775992.3987777 signs (30°) |
| 398000 rot | = 398000 turns (t) |