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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 Nanoradians (nrad) = 1.0E-9 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 Nanoradians (table conversion) |
|---|---|
| 1 SOA | = 4848.137 nrad |
| 2 SOA | = 9696.274 nrad |
| 3 SOA | = 14544.411 nrad |
| 4 SOA | = 19392.548 nrad |
| 5 SOA | = 24240.685 nrad |
| 6 SOA | = 29088.822 nrad |
| 7 SOA | = 33936.959 nrad |
| 8 SOA | = 38785.096 nrad |
| 9 SOA | = 43633.233 nrad |
| 10 SOA | = 48481.37 nrad |
| 20 SOA | = 96962.74 nrad |
| 30 SOA | = 145444.11 nrad |
| 40 SOA | = 193925.48 nrad |
| 50 SOA | = 242406.85 nrad |
| 60 SOA | = 290888.22 nrad |
| 70 SOA | = 339369.59 nrad |
| 80 SOA | = 387850.96 nrad |
| 90 SOA | = 436332.33 nrad |
| 100 SOA | = 484813.7 nrad |
| 200 SOA | = 969627.4 nrad |
| 300 SOA | = 1454441.1 nrad |
| 400 SOA | = 1939254.8 nrad |
| 500 SOA | = 2424068.5 nrad |
| 600 SOA | = 2908882.2 nrad |
| 700 SOA | = 3393695.9 nrad |
| 800 SOA | = 3878509.6 nrad |
| 900 SOA | = 4363323.3 nrad |
| 1000 SOA | = 4848137 nrad |
| 2000 SOA | = 9696274 nrad |
| 4000 SOA | = 19392548 nrad |
| 5000 SOA | = 24240685 nrad |
| 7500 SOA | = 36361027.5 nrad |
| 10000 SOA | = 48481370 nrad |
| 25000 SOA | = 121203425 nrad |
| 50000 SOA | = 242406850 nrad |
| 100000 SOA | = 484813700 nrad |
| 1000000 SOA | = 4848137000 nrad |
| 1000000000 SOA | = 4848137000000 nrad |