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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 Octants (oct) = 0.785398 radians.| 1 Second Of Arc | to common angle units |
|---|---|
| 1 SOA | = 4.848137E-6 radians (rad) |
| 1 SOA | = 0.004848137 milliradians (mrad/mil) |
| 1 SOA | = 0.0049382703096925 angular mils (µ mil) |
| 1 SOA | = 0.00027777777776858 degrees (°deg) |
| 1 SOA | = 0.00030864199259955 gradians (grad) |
| 1 SOA | = 0.016666679271747 arcminutes (arcmin) |
| 1 SOA | = 1 arcseconds (arcsec) |
| 1 SOA | = 4.6296278258744E-6 sextants (60°) |
| 1 SOA | = 9.2592379679144E-6 signs (30°) |
| 1 SOA | = 7.7160439203653E-7 turns (t) |
| Second Of Arc | to Octants (table conversion) |
|---|---|
| 1 SOA | = 6.1728410309168E-6 oct |
| 2 SOA | = 1.2345682061834E-5 oct |
| 3 SOA | = 1.851852309275E-5 oct |
| 4 SOA | = 2.4691364123667E-5 oct |
| 5 SOA | = 3.0864205154584E-5 oct |
| 6 SOA | = 3.7037046185501E-5 oct |
| 7 SOA | = 4.3209887216418E-5 oct |
| 8 SOA | = 4.9382728247334E-5 oct |
| 9 SOA | = 5.5555569278251E-5 oct |
| 10 SOA | = 6.1728410309168E-5 oct |
| 20 SOA | = 0.00012345682061834 oct |
| 30 SOA | = 0.0001851852309275 oct |
| 40 SOA | = 0.00024691364123667 oct |
| 50 SOA | = 0.00030864205154584 oct |
| 60 SOA | = 0.00037037046185501 oct |
| 70 SOA | = 0.00043209887216418 oct |
| 80 SOA | = 0.00049382728247334 oct |
| 90 SOA | = 0.00055555569278251 oct |
| 100 SOA | = 0.00061728410309168 oct |
| 200 SOA | = 0.0012345682061834 oct |
| 300 SOA | = 0.001851852309275 oct |
| 400 SOA | = 0.0024691364123667 oct |
| 500 SOA | = 0.0030864205154584 oct |
| 600 SOA | = 0.0037037046185501 oct |
| 700 SOA | = 0.0043209887216418 oct |
| 800 SOA | = 0.0049382728247334 oct |
| 900 SOA | = 0.0055555569278251 oct |
| 1000 SOA | = 0.0061728410309168 oct |
| 2000 SOA | = 0.012345682061834 oct |
| 4000 SOA | = 0.024691364123667 oct |
| 5000 SOA | = 0.030864205154584 oct |
| 7500 SOA | = 0.046296307731876 oct |
| 10000 SOA | = 0.061728410309168 oct |
| 25000 SOA | = 0.15432102577292 oct |
| 50000 SOA | = 0.30864205154584 oct |
| 100000 SOA | = 0.61728410309168 oct |
| 1000000 SOA | = 6.1728410309168 oct |
| 1000000000 SOA | = 6172.8410309168 oct |