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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 Octants (oct) is equal to 0.785398 radians, while 1 Second Of Arc (SOA) = 4.848137E-6 radians.| 9 Octants | to common angle units |
|---|---|
| 9 oct | = 7.068582 radians (rad) |
| 9 oct | = 7068.582 milliradians (mrad/mil) |
| 9 oct | = 7199.9963330712 angular mils (µ mil) |
| 9 oct | = 404.99989994816 degrees (°deg) |
| 9 oct | = 449.99991405633 gradians (grad) |
| 9 oct | = 24300.012375897 arcminutes (arcmin) |
| 9 oct | = 1457999.6398617 arcseconds (arcsec) |
| 9 oct | = 6.7499957028184 sextants (60°) |
| 9 oct | = 13.499965622613 signs (30°) |
| 9 oct | = 1.1249989257049 turns (t) |