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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 Microarcseconds (μas) = 4.8481368E-12 radians.| 25 Second Of Arc | to common angle units |
|---|---|
| 25 SOA | = 0.000121203425 radians (rad) |
| 25 SOA | = 0.121203425 milliradians (mrad/mil) |
| 25 SOA | = 0.12345675774231 angular mils (µ mil) |
| 25 SOA | = 0.0069444444442145 degrees (°deg) |
| 25 SOA | = 0.0077160498149887 gradians (grad) |
| 25 SOA | = 0.41666698179368 arcminutes (arcmin) |
| 25 SOA | = 25 arcseconds (arcsec) |
| 25 SOA | = 0.00011574069564686 sextants (60°) |
| 25 SOA | = 0.00023148094919786 signs (30°) |
| 25 SOA | = 1.9290109800913E-5 turns (t) |