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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 Circles (o) is equal to 6.28319 radians, while 1 Second Of Arc (SOA) = 4.848137E-6 radians.| 1 Circles | to common angle units |
|---|---|
| 1 o | = 6.28319 radians (rad) |
| 1 o | = 6283.19 milliradians (mrad/mil) |
| 1 o | = 6400.0028520557 angular mils (µ mil) |
| 1 o | = 360.0002548397 degrees (°deg) |
| 1 o | = 400.0003055775 gradians (grad) |
| 1 o | = 21600.031627293 arcminutes (arcmin) |
| 1 o | = 1296000.9174658 arcseconds (arcsec) |
| 1 o | = 6.0000019098585 sextants (60°) |
| 1 o | = 11.999980901451 signs (30°) |
| 1 o | = 1 turns (t) |
| Circles | to Second Of Arc (table conversion) |
|---|---|
| 1 o | = 1296000.9174658 SOA |
| 2 o | = 2592001.8349316 SOA |
| 3 o | = 3888002.7523975 SOA |
| 4 o | = 5184003.6698633 SOA |
| 5 o | = 6480004.5873291 SOA |
| 6 o | = 7776005.5047949 SOA |
| 7 o | = 9072006.4222608 SOA |
| 8 o | = 10368007.339727 SOA |
| 9 o | = 11664008.257192 SOA |
| 10 o | = 12960009.174658 SOA |
| 20 o | = 25920018.349316 SOA |
| 30 o | = 38880027.523975 SOA |
| 40 o | = 51840036.698633 SOA |
| 50 o | = 64800045.873291 SOA |
| 60 o | = 77760055.047949 SOA |
| 70 o | = 90720064.222608 SOA |
| 80 o | = 103680073.39727 SOA |
| 90 o | = 116640082.57192 SOA |
| 100 o | = 129600091.74658 SOA |
| 200 o | = 259200183.49316 SOA |
| 300 o | = 388800275.23975 SOA |
| 400 o | = 518400366.98633 SOA |
| 500 o | = 648000458.73291 SOA |
| 600 o | = 777600550.47949 SOA |
| 700 o | = 907200642.22608 SOA |
| 800 o | = 1036800733.9727 SOA |
| 900 o | = 1166400825.7192 SOA |
| 1000 o | = 1296000917.4658 SOA |
| 2000 o | = 2592001834.9316 SOA |
| 4000 o | = 5184003669.8633 SOA |
| 5000 o | = 6480004587.3291 SOA |
| 7500 o | = 9720006880.9937 SOA |
| 10000 o | = 12960009174.658 SOA |
| 25000 o | = 32400022936.646 SOA |
| 50000 o | = 64800045873.291 SOA |
| 100000 o | = 129600091746.58 SOA |
| 1000000 o | = 1296000917465.8 SOA |
| 1000000000 o | = 1.2960009174658E+15 SOA |