| 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 |
| earth radius | 23,481.0658766 R⊕ | 46,962.1317533 R⊕ | 70,443.1976299 R⊕ | 93,924.2635065 R⊕ | 117,405.3293831 R⊕ | 140,886.3952598 R⊕ | 164,367.4611364 R⊕ | 187,848.5270130 R⊕ | 211,329.5928897 R⊕ | 234,810.6587663 R⊕ | 258,291.7246429 R⊕ | 281,772.7905195 R⊕ | 305,253.8563962 R⊕ | 328,734.9222728 R⊕ | 352,215.9881494 R⊕ | 375,697.0540261 R⊕ | 399,178.1199027 R⊕ | 422,659.1857793 R⊕ | 446,140.2516559 R⊕ | 469,621.3175326 R⊕ | 493,102.3834092 R⊕ | 516,583.4492858 R⊕ | 540,064.5151625 R⊕ | 563,545.5810391 R⊕ | 587,026.6469157 R⊕ | 610,507.7127923 R⊕ | 633,988.7786690 R⊕ | 657,469.8445456 R⊕ | 680,950.9104222 R⊕ | 704,431.9762989 R⊕ | 727,913.0421755 R⊕ | 751,394.1080521 R⊕ | 774,875.1739287 R⊕ | 798,356.2398054 R⊕ | 821,837.305682 R⊕ | 845,318.3715586 R⊕ | 868,799.4374353 R⊕ | 892,280.5033119 R⊕ | 915,761.5691885 R⊕ | 939,242.6350651 R⊕ | 962,723.7009418 R⊕ | 986,204.7668184 R⊕ | 1,009,685.832695 R⊕ | 1,033,166.8985717 R⊕ | 1,056,647.9644483 R⊕ | 1,080,129.0303249 R⊕ | 1,103,610.0962015 R⊕ | 1,127,091.1620782 R⊕ | 1,150,572.2279548 R⊕ | 1,174,053.2938314 R⊕ | 1,197,534.3597081 R⊕ | 1,221,015.4255847 R⊕ | 1,244,496.4914613 R⊕ | 1,267,977.5573379 R⊕ | 1,291,458.6232146 R⊕ | 1,314,939.6890912 R⊕ | 1,338,420.7549678 R⊕ | 1,361,901.8208445 R⊕ | 1,385,382.8867211 R⊕ | 1,408,863.9525977 R⊕ | 1,432,345.0184743 R⊕ | 1,455,826.084351 R⊕ | 1,479,307.1502276 R⊕ | 1,502,788.2161042 R⊕ | 1,526,269.2819809 R⊕ | 1,549,750.3478575 R⊕ | 1,573,231.4137341 R⊕ | 1,596,712.4796107 R⊕ | 1,620,193.5454874 R⊕ | 1,643,674.611364 R⊕ | 1,667,155.6772406 R⊕ | 1,690,636.7431173 R⊕ | 1,714,117.8089939 R⊕ | 1,737,598.8748705 R⊕ | 1,761,079.9407471 R⊕ | 1,784,561.0066238 R⊕ | 1,808,042.0725004 R⊕ | 1,831,523.138377 R⊕ | 1,855,004.2042536 R⊕ | 1,878,485.2701303 R⊕ | 1,901,966.3360069 R⊕ | 1,925,447.4018835 R⊕ | 1,948,928.4677602 R⊕ | 1,972,409.5336368 R⊕ | 1,995,890.5995134 R⊕ | 2,019,371.66539 R⊕ | 2,042,852.7312667 R⊕ | 2,066,333.7971433 R⊕ | 2,089,814.8630199 R⊕ | 2,113,295.9288966 R⊕ | 2,136,776.9947732 R⊕ | 2,160,258.0606498 R⊕ | 2,183,739.1265264 R⊕ | 2,207,220.1924031 R⊕ | 2,230,701.2582797 R⊕ | 2,254,182.3241563 R⊕ | 2,277,663.390033 R⊕ | 2,301,144.4559096 R⊕ | 2,324,625.5217862 R⊕ | 2,348,106.5876628 R⊕ |
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.
| 1 astronomical units ≈ 23481.065876628 earth radius | 4 astronomical units ≈ 93924.263506514 earth radius |
| 1.5 astronomical units ≈ 35221.598814943 earth radius | 4.5 astronomical units ≈ 105664.79644483 earth radius |
| 2 astronomical units ≈ 46962.131753257 earth radius | 5 astronomical units ≈ 117405.32938314 earth radius |
| 2.5 astronomical units ≈ 58702.664691571 earth radius | 5.5 astronomical units ≈ 129145.86232146 earth radius |
| 3 astronomical units ≈ 70443.197629885 earth radius | 6 astronomical units ≈ 140886.39525977 earth radius |
Earth radius is the distance from Earth's center to its surface, about 6,371 km (3,959 mi). This length is also used as a unit of distance, especially in astronomy and geology, where it is usually denoted by R⊕.
| 1 earth radius ≈ 4.2587504555972E-5 astronomical units | 4 earth radius ≈ 0.00017035001822389 astronomical units |
| 1.5 earth radius ≈ 6.3881256833958E-5 astronomical units | 4.5 earth radius ≈ 0.00019164377050188 astronomical units |
| 2 earth radius ≈ 8.5175009111945E-5 astronomical units | 5 earth radius ≈ 0.00021293752277986 astronomical units |
| 2.5 earth radius ≈ 0.00010646876138993 astronomical units | 5.5 earth radius ≈ 0.00023423127505785 astronomical units |
| 3 earth radius ≈ 0.00012776251366792 astronomical units | 6 earth radius ≈ 0.00025552502733583 astronomical units |
| 1 astronomical units ≈ 23,481.0658766 earth radius |
| 1 earth radius ≈ 4.2587504555972 × 10-5 astronomical units |