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 |
rod | 29,745,858,327.368 rd | 59,491,716,654.736 rd | 89,237,574,982.105 rd | 118,983,433,309.47 rd | 148,729,291,636.84 rd | 178,475,149,964.21 rd | 208,221,008,291.58 rd | 237,966,866,618.95 rd | 267,712,724,946.31 rd | 297,458,583,273.68 rd | 327,204,441,601.05 rd | 356,950,299,928.42 rd | 386,696,158,255.79 rd | 416,442,016,583.15 rd | 446,187,874,910.52 rd | 475,933,733,237.89 rd | 505,679,591,565.26 rd | 535,425,449,892.63 rd | 565 171 308 220 rd | 594,917,166,547.36 rd | 624,663,024,874.73 rd | 654,408,883,202.1 rd | 684,154,741,529.47 rd | 713,900,599,856.84 rd | 743,646,458,184.2 rd | 773,392,316,511.57 rd | 803,138,174,838.94 rd | 832,884,033,166.31 rd | 862,629,891,493.68 rd | 892,375,749,821.05 rd | 922,121,608,148.41 rd | 951,867,466,475.78 rd | 981,613,324,803.15 rd | 1,011,359,183,130.5 rd | 1,041,105,041,457.9 rd | 1,070,850,899,785.3 rd | 1,100,596,758,112.6 rd | 1 130 342 616 440 rd | 1,160,088,474,767.4 rd | 1,189,834,333,094.7 rd | 1,219,580,191,422.1 rd | 1,249,326,049,749.5 rd | 1,279,071,908,076.8 rd | 1,308,817,766,404.2 rd | 1,338,563,624,731.6 rd | 1,368,309,483,058.9 rd | 1,398,055,341,386.3 rd | 1,427,801,199,713.7 rd | 1 457 547 058 041 rd | 1,487,292,916,368.4 rd | 1,517,038,774,695.8 rd | 1,546,784,633,023.1 rd | 1,576,530,491,350.5 rd | 1,606,276,349,677.9 rd | 1,636,022,208,005.2 rd | 1,665,768,066,332.6 rd | 1 695 513 924 660 rd | 1,725,259,782,987.4 rd | 1,755,005,641,314.7 rd | 1,784,751,499,642.1 rd | 1,814,497,357,969.5 rd | 1,844,243,216,296.8 rd | 1,873,989,074,624.2 rd | 1,903,734,932,951.6 rd | 1,933,480,791,278.9 rd | 1,963,226,649,606.3 rd | 1,992,972,507,933.7 rd | 2 022 718 366 261 rd | 2,052,464,224,588.4 rd | 2,082,210,082,915.8 rd | 2,111,955,941,243.1 rd | 2,141,701,799,570.5 rd | 2,171,447,657,897.9 rd | 2,201,193,516,225.2 rd | 2,230,939,374,552.6 rd | 2 260 685 232 880 rd | 2,290,431,091,207.3 rd | 2,320,176,949,534.7 rd | 2,349,922,807,862.1 rd | 2,379,668,666,189.5 rd | 2,409,414,524,516.8 rd | 2,439,160,382,844.2 rd | 2,468,906,241,171.6 rd | 2,498,652,099,498.9 rd | 2,528,397,957,826.3 rd | 2,558,143,816,153.7 rd | 2 587 889 674 481 rd | 2,617,635,532,808.4 rd | 2,647,381,391,135.8 rd | 2,677,127,249,463.1 rd | 2,706,873,107,790.5 rd | 2,736,618,966,117.9 rd | 2,766,364,824,445.2 rd | 2,796,110,682,772.6 rd | 2 825 856 541 100 rd | 2,855,602,399,427.3 rd | 2,885,348,257,754.7 rd | 2,915,094,116,082.1 rd | 2,944,839,974,409.4 rd | 2,974,585,832,736.8 rd |
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 | rods | astronomical units | rods |
---|---|---|---|
1 | = 29745858327.368 | 4 | = 118983433309.47 |
1.5 | = 44618787491.052 | 4.5 | = 133856362473.16 |
2 | = 59491716654.736 | 5 | = 148729291636.84 |
2.5 | = 74364645818.42 | 5.5 | = 163602220800.52 |
3 | = 89237574982.105 | 6 | = 178475149964.21 |
The rod or perch or pole is a surveyors tool and unit of length equal to 5 1⁄2 yards, 16 1⁄2 feet, 1⁄320 of a statute mile or one-fourth of a surveyor's chain and 5.0292 meters.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
rod | rd | ≡ 16 1⁄2 ft | = 5.0292 m | Imperial/US |
rods | astronomical units | rods | astronomical units |
---|---|---|---|
1 | = 3.3618125555312E-11 | 4 | = 1.3447250222125E-10 |
1.5 | = 5.0427188332969E-11 | 4.5 | = 1.5128156499891E-10 |
2 | = 6.7236251110625E-11 | 5 | = 1.6809062777656E-10 |
2.5 | = 8.4045313888281E-11 | 5.5 | = 1.8489969055422E-10 |
3 | = 1.0085437666594E-10 | 6 | = 2.0170875333187E-10 |
astronomical units | rods |
---|---|
1 | = 29,745,858,327.368 |
3.3618125555312 × 10-11 | = 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 …) |