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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 Milliarcseconds (mas) is equal to 4.8481368E-9 radians, while 1 Second Of Arc (SOA) = 4.848137E-6 radians.| 8700 Milliarcseconds | to common angle units |
|---|---|
| 8700 mas | = 4.217879016E-5 radians (rad) |
| 8700 mas | = 0.04217879016 milliradians (mrad/mil) |
| 8700 mas | = 0.042962949921976 angular mils (µ mil) |
| 8700 mas | = 0.002416666566892 degrees (°deg) |
| 8700 mas | = 0.0026851852248442 gradians (grad) |
| 8700 mas | = 0.14500010368252 arcminutes (arcmin) |
| 8700 mas | = 8.6999996410993 arcseconds (arcsec) |
| 8700 mas | = 4.027776042353E-5 sextants (60°) |
| 8700 mas | = 8.0555366997708E-5 signs (30°) |
| 8700 mas | = 6.7129579337884E-6 turns (t) |