astronomical unit | 1 AU | 2 AU | 3 AU | 4 AU | 5 AU | 6 AU | 7 AU | 8 AU | 9 AU | 10 AU | 11 AU | 12 AU | 13 AU | 14 AU | 15 AU | 16 AU | 17 AU | 18 AU | 19 AU | 20 AU | 21 AU | 22 AU | 23 AU | 24 AU | 25 AU | 26 AU | 27 AU | 28 AU | 29 AU | 30 AU | 31 AU | 32 AU | 33 AU | 34 AU | 35 AU | 36 AU | 37 AU | 38 AU | 39 AU | 40 AU | 41 AU | 42 AU | 43 AU | 44 AU | 45 AU | 46 AU | 47 AU | 48 AU | 49 AU | 50 AU | 51 AU | 52 AU | 53 AU | 54 AU | 55 AU | 56 AU | 57 AU | 58 AU | 59 AU | 60 AU | 61 AU | 62 AU | 63 AU | 64 AU | 65 AU | 66 AU | 67 AU | 68 AU | 69 AU | 70 AU | 71 AU | 72 AU | 73 AU | 74 AU | 75 AU | 76 AU | 77 AU | 78 AU | 79 AU | 80 AU | 81 AU | 82 AU | 83 AU | 84 AU | 85 AU | 86 AU | 87 AU | 88 AU | 89 AU | 90 AU | 91 AU | 92 AU | 93 AU | 94 AU | 95 AU | 96 AU | 97 AU | 98 AU | 99 AU | 100 AU |
league (land) | 30,985,474.461475 lea | 61,970,948.922949 lea | 92,956,423.384424 lea | 123,941,897.8459 lea | 154,927,372.30737 lea | 185,912,846.76885 lea | 216,898,321.23032 lea | 247,883,795.6918 lea | 278,869,270.15327 lea | 309,854,744.61475 lea | 340,840,219.07622 lea | 371,825,693.5377 lea | 402,811,167.99917 lea | 433,796,642.46065 lea | 464,782,116.92212 lea | 495,767,591.3836 lea | 526,753,065.84507 lea | 557,738,540.30655 lea | 588,724,014.76802 lea | 619,709,489.22949 lea | 650,694,963.69097 lea | 681,680,438.15244 lea | 712,665,912.61392 lea | 743,651,387.07539 lea | 774,636,861.53687 lea | 805,622,335.99834 lea | 836,607,810.45982 lea | 867,593,284.92129 lea | 898,578,759.38277 lea | 929,564,233.84424 lea | 960,549,708.30572 lea | 991,535,182.76719 lea | 1,022,520,657.2287 lea | 1,053,506,131.6901 lea | 1,084,491,606.1516 lea | 1,115,477,080.6131 lea | 1,146,462,555.0746 lea | 1,177,448,029.536 lea | 1,208,433,503.9975 lea | 1,239,418,978.459 lea | 1,270,404,452.9205 lea | 1,301,389,927.3819 lea | 1,332,375,401.8434 lea | 1,363,360,876.3049 lea | 1,394,346,350.7664 lea | 1,425,331,825.2278 lea | 1,456,317,299.6893 lea | 1,487,302,774.1508 lea | 1,518,288,248.6123 lea | 1,549,273,723.0737 lea | 1,580,259,197.5352 lea | 1,611,244,671.9967 lea | 1,642,230,146.4582 lea | 1,673,215,620.9196 lea | 1,704,201,095.3811 lea | 1,735,186,569.8426 lea | 1,766,172,044.3041 lea | 1,797,157,518.7655 lea | 1,828,142,993.227 lea | 1,859,128,467.6885 lea | 1,890,113,942.15 lea | 1,921,099,416.6114 lea | 1,952,084,891.0729 lea | 1,983,070,365.5344 lea | 2,014,055,839.9959 lea | 2,045,041,314.4573 lea | 2,076,026,788.9188 lea | 2,107,012,263.3803 lea | 2,137,997,737.8418 lea | 2,168,983,212.3032 lea | 2,199,968,686.7647 lea | 2,230,954,161.2262 lea | 2,261,939,635.6877 lea | 2,292,925,110.1491 lea | 2,323,910,584.6106 lea | 2,354,896,059.0721 lea | 2,385,881,533.5336 lea | 2,416,867,007.995 lea | 2,447,852,482.4565 lea | 2,478,837,956.918 lea | 2,509,823,431.3795 lea | 2,540,808,905.8409 lea | 2,571,794,380.3024 lea | 2,602,779,854.7639 lea | 2,633,765,329.2254 lea | 2,664,750,803.6868 lea | 2,695,736,278.1483 lea | 2,726,721,752.6098 lea | 2,757,707,227.0713 lea | 2,788,692,701.5327 lea | 2,819,678,175.9942 lea | 2,850,663,650.4557 lea | 2,881,649,124.9172 lea | 2,912,634,599.3786 lea | 2,943,620,073.8401 lea | 2,974,605,548.3016 lea | 3,005,591,022.763 lea | 3,036,576,497.2245 lea | 3,067,561,971.686 lea | 3,098,547,446.1475 lea |
The astronomical unit (symbol: au or ua) is a unit of length, roughly the distance from Earth to the Sun. However, that distance varies as Earth orbits the Sun, from a maximum (aphelion) to a minimum (perihelion) and back again once a year. Originally conceived as the average of Earth's aphelion and perihelion, it is now defined as exactly 149 597 870 700 metres (about 150 million kilometres, or 93 million miles). The astronomical unit is used primarily as a convenient yardstick for measuring distances within the Solar System or around other stars. However, it is also a fundamental component in the definition of another unit of astronomical length, the parsec.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
astronomical unit | AU | ≡ 149 597 870 700 m ≈ Distance from Earth to Sun | ≡ 149 597 870 700 m | Science - Astronomy (Length) |
astronomical units | leagues (land) | astronomical units | leagues (land) |
---|---|---|---|
1 | = 30985474.461475 | 4 | = 123941897.8459 |
1.5 | = 46478211.692212 | 4.5 | = 139434635.07664 |
2 | = 61970948.922949 | 5 | = 154927372.30737 |
2.5 | = 77463686.153687 | 5.5 | = 170420109.53811 |
3 | = 92956423.384424 | 6 | = 185912846.76885 |
A league is a unit of length (or, in various regions, area). It was common in Europe and Latin America, but is no longer an official unit in any nation. The word originally meant the distance a person could walk in an hour. Since the Middle Ages, many values have been specified in several countries.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
league (land) | lea | ≈ 1 hour walk, Currently defined in US as 3 Statute miles, but historically varied from 2 to 9 km | ≈ 4828 m | Imperial/US |
leagues (land) | astronomical units | leagues (land) | astronomical units |
---|---|---|---|
1 | = 3.2273186626312E-8 | 4 | = 1.2909274650525E-7 |
1.5 | = 4.8409779939468E-8 | 4.5 | = 1.452293398184E-7 |
2 | = 6.4546373252624E-8 | 5 | = 1.6136593313156E-7 |
2.5 | = 8.068296656578E-8 | 5.5 | = 1.7750252644472E-7 |
3 | = 9.6819559878936E-8 | 6 | = 1.9363911975787E-7 |
astronomical units | leagues (land) |
---|---|
1 | = 30,985,474.461475 |
3.2273186626312 × 10-8 | = 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 …) |