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 |
light-minute | 8.3167464 light-minute | 16.6334928 light-minute | 24.9502392 light-minute | 33.2669856 light-minute | 41.5837320 light-minute | 49.9004784 light-minute | 58.2172248 light-minute | 66.5339712 light-minute | 74.8507176 light-minute | 83.1674640 light-minute | 91.4842104 light-minute | 99.8009568 light-minute | 108.1177032 light-minute | 116.4344496 light-minute | 124.7511960 light-minute | 133.0679424 light-minute | 141.3846888 light-minute | 149.7014352 light-minute | 158.0181815 light-minute | 166.3349279 light-minute | 174.6516743 light-minute | 182.9684207 light-minute | 191.2851671 light-minute | 199.6019135 light-minute | 207.9186599 light-minute | 216.2354063 light-minute | 224.5521527 light-minute | 232.8688991 light-minute | 241.1856455 light-minute | 249.5023919 light-minute | 257.8191383 light-minute | 266.1358847 light-minute | 274.4526311 light-minute | 282.7693775 light-minute | 291.0861239 light-minute | 299.4028703 light-minute | 307.7196167 light-minute | 316.0363631 light-minute | 324.3531095 light-minute | 332.6698559 light-minute | 340.9866023 light-minute | 349.3033487 light-minute | 357.6200951 light-minute | 365.9368415 light-minute | 374.2535879 light-minute | 382.5703343 light-minute | 390.8870807 light-minute | 399.2038271 light-minute | 407.5205735 light-minute | 415.8373199 light-minute | 424.1540663 light-minute | 432.4708127 light-minute | 440.7875591 light-minute | 449.1043055 light-minute | 457.4210518 light-minute | 465.7377982 light-minute | 474.0545446 light-minute | 482.3712910 light-minute | 490.6880374 light-minute | 499.0047838 light-minute | 507.3215302 light-minute | 515.6382766 light-minute | 523.9550230 light-minute | 532.2717694 light-minute | 540.5885158 light-minute | 548.9052622 light-minute | 557.2220086 light-minute | 565.5387550 light-minute | 573.8555014 light-minute | 582.1722478 light-minute | 590.4889942 light-minute | 598.8057406 light-minute | 607.1224870 light-minute | 615.4392334 light-minute | 623.7559798 light-minute | 632.0727262 light-minute | 640.3894726 light-minute | 648.7062190 light-minute | 657.0229654 light-minute | 665.3397118 light-minute | 673.6564582 light-minute | 681.9732046 light-minute | 690.2899510 light-minute | 698.6066974 light-minute | 706.9234438 light-minute | 715.2401902 light-minute | 723.5569366 light-minute | 731.8736830 light-minute | 740.1904294 light-minute | 748.5071758 light-minute | 756.8239222 light-minute | 765.1406685 light-minute | 773.4574149 light-minute | 781.7741613 light-minute | 790.0909077 light-minute | 798.4076541 light-minute | 806.7244005 light-minute | 815.0411469 light-minute | 823.3578933 light-minute | 831.6746397 light-minute |
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 | light-minutes | astronomical units | light-minutes |
---|---|---|---|
1 | ≡ 8.3167463972693 | 4 | ≡ 33.266985589077 |
1.5 | ≡ 12.475119595904 | 4.5 | ≡ 37.425358787712 |
2 | ≡ 16.633492794539 | 5 | ≡ 41.583731986346 |
2.5 | ≡ 20.791865993173 | 5.5 | ≡ 45.742105184981 |
3 | ≡ 24.950239191808 | 6 | ≡ 49.900478383616 |
The light-minute is a unit of length useful in astronomy, telecommunications and relativistic physics. It is defined as the distance that light travels in free space in oneminute, and is equal to exactly 1.798754748×1010 metres.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
light-minute | ≡ 60 light-seconds | ≡ 1.798754748×1010 m | Science - Astronomy (Length) |
light-minutes | astronomical units | light-minutes | astronomical units |
---|---|---|---|
1 | ≡ 0.120239328246 | 4 | ≡ 0.480957312984 |
1.5 | ≡ 0.180358992369 | 4.5 | ≡ 0.541076977107 |
2 | ≡ 0.240478656492 | 5 | ≡ 0.60119664123 |
2.5 | ≡ 0.300598320615 | 5.5 | ≡ 0.661316305353 |
3 | ≡ 0.360717984738 | 6 | ≡ 0.721435969476 |
astronomical units | light-minutes |
---|---|
1 | ≡ 8.3167464 |
0.1202393 | ≡ 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 …) |