| sign | 1 sign | 2 sign | 3 sign | 4 sign | 5 sign | 6 sign | 7 sign | 8 sign | 9 sign | 10 sign | 11 sign | 12 sign | 13 sign | 14 sign | 15 sign | 16 sign | 17 sign | 18 sign | 19 sign | 20 sign | 21 sign | 22 sign | 23 sign | 24 sign | 25 sign | 26 sign | 27 sign | 28 sign | 29 sign | 30 sign | 31 sign | 32 sign | 33 sign | 34 sign | 35 sign | 36 sign | 37 sign | 38 sign | 39 sign | 40 sign | 41 sign | 42 sign | 43 sign | 44 sign | 45 sign | 46 sign | 47 sign | 48 sign | 49 sign | 50 sign | 51 sign | 52 sign | 53 sign | 54 sign | 55 sign | 56 sign | 57 sign | 58 sign | 59 sign | 60 sign | 61 sign | 62 sign | 63 sign | 64 sign | 65 sign | 66 sign | 67 sign | 68 sign | 69 sign | 70 sign | 71 sign | 72 sign | 73 sign | 74 sign | 75 sign | 76 sign | 77 sign | 78 sign | 79 sign | 80 sign | 81 sign | 82 sign | 83 sign | 84 sign | 85 sign | 86 sign | 87 sign | 88 sign | 89 sign | 90 sign | 91 sign | 92 sign | 93 sign | 94 sign | 95 sign | 96 sign | 97 sign | 98 sign | 99 sign | 100 sign |
| arcsecond | 108 000 " | 216 000 " | 324 000 " | 432 000 " | 540 000 " | 648 000 " | 756 000 " | 864 000 " | 972 000 " | 1 080 000 " | 1 188 000 " | 1 296 000 " | 1 404 000 " | 1 512 000 " | 1 620 000 " | 1 728 000 " | 1 836 000 " | 1 944 000 " | 2 052 000 " | 2 160 000 " | 2 268 000 " | 2 376 000 " | 2 484 000 " | 2 592 000 " | 2 700 000 " | 2 808 000 " | 2 916 000 " | 3 024 000 " | 3 132 000 " | 3 240 000 " | 3 348 000 " | 3 456 000 " | 3 564 000 " | 3 672 000 " | 3 780 000 " | 3 888 000 " | 3 996 000 " | 4 104 000 " | 4 212 000 " | 4 320 000 " | 4 428 000 " | 4 536 000 " | 4 644 000 " | 4 752 000 " | 4 860 000 " | 4 968 000 " | 5 076 000 " | 5 184 000 " | 5 292 000 " | 5 400 000 " | 5 508 000 " | 5 616 000 " | 5 724 000 " | 5 832 000 " | 5 940 000 " | 6 048 000 " | 6 156 000 " | 6 264 000 " | 6 372 000 " | 6 480 000 " | 6 588 000 " | 6 696 000 " | 6 804 000 " | 6 912 000 " | 7 020 000 " | 7 128 000 " | 7 236 000 " | 7 344 000 " | 7 452 000 " | 7 560 000 " | 7 668 000 " | 7 776 000 " | 7 884 000 " | 7 992 000 " | 8 100 000 " | 8 208 000 " | 8 316 000 " | 8 424 000 " | 8 532 000 " | 8 640 000 " | 8 748 000 " | 8 856 000 " | 8 964 000 " | 9 072 000 " | 9 180 000 " | 9 288 000 " | 9 396 000 " | 9 504 000 " | 9 612 000 " | 9 720 000 " | 9 828 000 " | 9 936 000 " | 10 044 000 " | 10 152 000 " | 10 260 000 " | 10 368 000 " | 10 476 000 " | 10 584 000 " | 10 692 000 " | 10 800 000 " |
sign is the unit of plane angle, equals to 30°.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| sign | ≡ 30° | = 0.523599 rad | Metric system SI |
| signs | arcseconds | signs | arcseconds |
|---|---|---|---|
| 1 | ≈ 108000 | 6 | ≈ 648000 |
| 2 | ≈ 216000 | 7 | ≈ 756000 |
| 3 | ≈ 324000 | 8 | ≈ 864000 |
| 4 | ≈ 432000 | 9 | ≈ 972000 |
| 5 | ≈ 540000 | 10 | ≈ 1080000 |
A second of arc, arcsecond (arcsec), arc second, or second arc is a unit of angular measurement equal to 1/3600 of one degree.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| arcsecond | " | ≡ 1°⁄3600 | ≈ 4.848137×10−6 rad | Metric system SI |
| arcseconds | signs | arcseconds | signs |
|---|---|---|---|
| 1 | ≈ 9.2592592592593E-6 | 6 | ≈ 5.5555555555556E-5 |
| 2 | ≈ 1.8518518518519E-5 | 7 | ≈ 6.4814814814815E-5 |
| 3 | ≈ 2.7777777777778E-5 | 8 | ≈ 7.4074074074074E-5 |
| 4 | ≈ 3.7037037037037E-5 | 9 | ≈ 8.3333333333333E-5 |
| 5 | ≈ 4.6296296296296E-5 | 10 | ≈ 9.2592592592593E-5 |
| signs | arcseconds |
|---|---|
| 1 | ≈ 108 000 |
| 9.2592592592593 × 10-6 | ≈ 1 |
| Symbol | Definition |
|---|---|
| ≡ | exactly equal |
| ≈ | approximately equal to |
| = | equal to |
| digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |