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An arcsecond (arsec) or second of arc 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 Arcseconds (arcsec) is equal to 4.848137E-6 radians, while 1 Hour Angles (HA) = 0.26179938779 radians.| 1 Arcseconds | to common angle units |
|---|---|
| 1 arcsec | = 4.848137E-6 radians (rad) |
| 1 arcsec | = 0.004848137 milliradians (mrad/mil) |
| 1 arcsec | = 0.0049382703096925 angular mils (µ mil) |
| 1 arcsec | = 0.00027777777776858 degrees (°deg) |
| 1 arcsec | = 0.00030864199259955 gradians (grad) |
| 1 arcsec | = 0.016666679271747 arcminutes (arcmin) |
| 1 arcsec | = 1 arcseconds (arcsec) |
| 1 arcsec | = 4.6296278258744E-6 sextants (60°) |
| 1 arcsec | = 9.2592379679144E-6 signs (30°) |
| 1 arcsec | = 7.7160439203653E-7 turns (t) |
| Arcseconds | to Hour Angles (table conversion) |
|---|---|
| 1 arcsec | = 1.8518519240728E-5 HA |
| 2 arcsec | = 3.7037038481457E-5 HA |
| 3 arcsec | = 5.5555557722185E-5 HA |
| 4 arcsec | = 7.4074076962913E-5 HA |
| 5 arcsec | = 9.2592596203641E-5 HA |
| 6 arcsec | = 0.00011111111544437 HA |
| 7 arcsec | = 0.0001296296346851 HA |
| 8 arcsec | = 0.00014814815392583 HA |
| 9 arcsec | = 0.00016666667316655 HA |
| 10 arcsec | = 0.00018518519240728 HA |
| 20 arcsec | = 0.00037037038481457 HA |
| 30 arcsec | = 0.00055555557722185 HA |
| 40 arcsec | = 0.00074074076962913 HA |
| 50 arcsec | = 0.00092592596203641 HA |
| 60 arcsec | = 0.0011111111544437 HA |
| 70 arcsec | = 0.001296296346851 HA |
| 80 arcsec | = 0.0014814815392583 HA |
| 90 arcsec | = 0.0016666667316655 HA |
| 100 arcsec | = 0.0018518519240728 HA |
| 200 arcsec | = 0.0037037038481457 HA |
| 300 arcsec | = 0.0055555557722185 HA |
| 400 arcsec | = 0.0074074076962913 HA |
| 500 arcsec | = 0.0092592596203641 HA |
| 600 arcsec | = 0.011111111544437 HA |
| 700 arcsec | = 0.01296296346851 HA |
| 800 arcsec | = 0.014814815392583 HA |
| 900 arcsec | = 0.016666667316655 HA |
| 1000 arcsec | = 0.018518519240728 HA |
| 2000 arcsec | = 0.037037038481457 HA |
| 4000 arcsec | = 0.074074076962913 HA |
| 5000 arcsec | = 0.092592596203641 HA |
| 7500 arcsec | = 0.13888889430546 HA |
| 10000 arcsec | = 0.18518519240728 HA |
| 25000 arcsec | = 0.46296298101821 HA |
| 50000 arcsec | = 0.92592596203641 HA |
| 100000 arcsec | = 1.8518519240728 HA |
| 1000000 arcsec | = 18.518519240728 HA |
| 1000000000 arcsec | = 18518.519240728 HA |