league (land) | 1 lea | 2 lea | 3 lea | 4 lea | 5 lea | 6 lea | 7 lea | 8 lea | 9 lea | 10 lea | 11 lea | 12 lea | 13 lea | 14 lea | 15 lea | 16 lea | 17 lea | 18 lea | 19 lea | 20 lea | 21 lea | 22 lea | 23 lea | 24 lea | 25 lea | 26 lea | 27 lea | 28 lea | 29 lea | 30 lea | 31 lea | 32 lea | 33 lea | 34 lea | 35 lea | 36 lea | 37 lea | 38 lea | 39 lea | 40 lea | 41 lea | 42 lea | 43 lea | 44 lea | 45 lea | 46 lea | 47 lea | 48 lea | 49 lea | 50 lea | 51 lea | 52 lea | 53 lea | 54 lea | 55 lea | 56 lea | 57 lea | 58 lea | 59 lea | 60 lea | 61 lea | 62 lea | 63 lea | 64 lea | 65 lea | 66 lea | 67 lea | 68 lea | 69 lea | 70 lea | 71 lea | 72 lea | 73 lea | 74 lea | 75 lea | 76 lea | 77 lea | 78 lea | 79 lea | 80 lea | 81 lea | 82 lea | 83 lea | 84 lea | 85 lea | 86 lea | 87 lea | 88 lea | 89 lea | 90 lea | 91 lea | 92 lea | 93 lea | 94 lea | 95 lea | 96 lea | 97 lea | 98 lea | 99 lea | 100 lea |
astronomical unit | 3.2273186626312 × 10-8 AU | 6.4546373252624 × 10-8 AU | 9.6819559878936 × 10-8 AU | 1.2909274650525 × 10-7 AU | 1.6136593313156 × 10-7 AU | 1.9363911975787 × 10-7 AU | 2.2591230638418 × 10-7 AU | 2.581854930105 × 10-7 AU | 2.9045867963681 × 10-7 AU | 3.2273186626312 × 10-7 AU | 3.5500505288943 × 10-7 AU | 3.8727823951574 × 10-7 AU | 4.1955142614206 × 10-7 AU | 4.5182461276837 × 10-7 AU | 4.8409779939468 × 10-7 AU | 5.1637098602099 × 10-7 AU | 5.486441726473 × 10-7 AU | 5.8091735927362 × 10-7 AU | 6.1319054589993 × 10-7 AU | 6.4546373252624 × 10-7 AU | 6.7773691915255 × 10-7 AU | 7.1001010577887 × 10-7 AU | 7.4228329240518 × 10-7 AU | 7.7455647903149 × 10-7 AU | 8.068296656578 × 10-7 AU | 8.3910285228411 × 10-7 AU | 8.7137603891043 × 10-7 AU | 9.0364922553674 × 10-7 AU | 9.3592241216305 × 10-7 AU | 9.6819559878936 × 10-7 AU | 1.0004687854157 × 10-6 AU | 1.032741972042 × 10-6 AU | 1.0650151586683 × 10-6 AU | 1.0972883452946 × 10-6 AU | 1.1295615319209 × 10-6 AU | 1.1618347185472 × 10-6 AU | 1.1941079051735 × 10-6 AU | 1.2263810917999 × 10-6 AU | 1.2586542784262 × 10-6 AU | 1.2909274650525 × 10-6 AU | 1.3232006516788 × 10-6 AU | 1.3554738383051 × 10-6 AU | 1.3877470249314 × 10-6 AU | 1.4200202115577 × 10-6 AU | 1.452293398184 × 10-6 AU | 1.4845665848104 × 10-6 AU | 1.5168397714367 × 10-6 AU | 1.549112958063 × 10-6 AU | 1.5813861446893 × 10-6 AU | 1.6136593313156 × 10-6 AU | 1.6459325179419 × 10-6 AU | 1.6782057045682 × 10-6 AU | 1.7104788911945 × 10-6 AU | 1.7427520778209 × 10-6 AU | 1.7750252644472 × 10-6 AU | 1.8072984510735 × 10-6 AU | 1.8395716376998 × 10-6 AU | 1.8718448243261 × 10-6 AU | 1.9041180109524 × 10-6 AU | 1.9363911975787 × 10-6 AU | 1.968664384205 × 10-6 AU | 2.0009375708313 × 10-6 AU | 2.0332107574577 × 10-6 AU | 2.065483944084 × 10-6 AU | 2.0977571307103 × 10-6 AU | 2.1300303173366 × 10-6 AU | 2.1623035039629 × 10-6 AU | 2.1945766905892 × 10-6 AU | 2.2268498772155 × 10-6 AU | 2.2591230638418 × 10-6 AU | 2.2913962504682 × 10-6 AU | 2.3236694370945 × 10-6 AU | 2.3559426237208 × 10-6 AU | 2.3882158103471 × 10-6 AU | 2.4204889969734 × 10-6 AU | 2.4527621835997 × 10-6 AU | 2.485035370226 × 10-6 AU | 2.5173085568523 × 10-6 AU | 2.5495817434787 × 10-6 AU | 2.581854930105 × 10-6 AU | 2.6141281167313 × 10-6 AU | 2.6464013033576 × 10-6 AU | 2.6786744899839 × 10-6 AU | 2.7109476766102 × 10-6 AU | 2.7432208632365 × 10-6 AU | 2.7754940498628 × 10-6 AU | 2.8077672364891 × 10-6 AU | 2.8400404231155 × 10-6 AU | 2.8723136097418 × 10-6 AU | 2.9045867963681 × 10-6 AU | 2.9368599829944 × 10-6 AU | 2.9691331696207 × 10-6 AU | 3.001406356247 × 10-6 AU | 3.0336795428733 × 10-6 AU | 3.0659527294996 × 10-6 AU | 3.098225916126 × 10-6 AU | 3.1304991027523 × 10-6 AU | 3.1627722893786 × 10-6 AU | 3.1950454760049 × 10-6 AU | 3.2273186626312 × 10-6 AU |
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 |
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 |
leagues (land) | astronomical units |
---|---|
1 | = 3.2273186626312 × 10-8 |
30,985,474.461475 | = 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 …) |