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 |
megameter | 149,597.8707 Mm | 299,195.7414 Mm | 448,793.6121 Mm | 598,391.4828 Mm | 747,989.3535 Mm | 897,587.2242 Mm | 1,047,185.0949 Mm | 1,196,782.9656 Mm | 1,346,380.8363 Mm | 1,495,978.707 Mm | 1,645,576.5777 Mm | 1,795,174.4484 Mm | 1,944,772.3191 Mm | 2,094,370.1898 Mm | 2,243,968.0605 Mm | 2,393,565.9312 Mm | 2,543,163.8019 Mm | 2,692,761.6726 Mm | 2,842,359.5433 Mm | 2,991,957.414 Mm | 3,141,555.2847 Mm | 3,291,153.1554 Mm | 3,440,751.0261 Mm | 3,590,348.8968 Mm | 3,739,946.7675 Mm | 3,889,544.6382 Mm | 4,039,142.5089 Mm | 4,188,740.3796 Mm | 4,338,338.2503 Mm | 4,487,936.121 Mm | 4,637,533.9917 Mm | 4,787,131.8624 Mm | 4,936,729.7331 Mm | 5,086,327.6038 Mm | 5,235,925.4745 Mm | 5,385,523.3452 Mm | 5,535,121.2159 Mm | 5,684,719.0866 Mm | 5,834,316.9573 Mm | 5,983,914.828 Mm | 6,133,512.6987 Mm | 6,283,110.5694 Mm | 6,432,708.4401 Mm | 6,582,306.3108 Mm | 6,731,904.1815 Mm | 6,881,502.0522 Mm | 7,031,099.9229 Mm | 7,180,697.7936 Mm | 7,330,295.6643 Mm | 7,479,893.535 Mm | 7,629,491.4057 Mm | 7,779,089.2764 Mm | 7,928,687.1471 Mm | 8,078,285.0178 Mm | 8,227,882.8885 Mm | 8,377,480.7592 Mm | 8,527,078.6299 Mm | 8,676,676.5006 Mm | 8,826,274.3713 Mm | 8,975,872.242 Mm | 9,125,470.1127 Mm | 9,275,067.9834 Mm | 9,424,665.8541 Mm | 9,574,263.7248 Mm | 9,723,861.5955 Mm | 9,873,459.4662 Mm | 10,023,057.3369 Mm | 10,172,655.2076 Mm | 10,322,253.0783 Mm | 10,471,850.949 Mm | 10,621,448.8197 Mm | 10,771,046.6904 Mm | 10,920,644.5611 Mm | 11,070,242.4318 Mm | 11,219,840.3025 Mm | 11,369,438.1732 Mm | 11,519,036.0439 Mm | 11,668,633.9146 Mm | 11,818,231.7853 Mm | 11,967,829.656 Mm | 12,117,427.5267 Mm | 12,267,025.3974 Mm | 12,416,623.2681 Mm | 12,566,221.1388 Mm | 12,715,819.0095 Mm | 12,865,416.8802 Mm | 13,015,014.7509 Mm | 13,164,612.6216 Mm | 13,314,210.4923 Mm | 13,463,808.363 Mm | 13,613,406.2337 Mm | 13,763,004.1044 Mm | 13,912,601.9751 Mm | 14,062,199.8458 Mm | 14,211,797.7165 Mm | 14,361,395.5872 Mm | 14,510,993.4579 Mm | 14,660,591.3286 Mm | 14,810,189.1993 Mm | 14,959,787.07 Mm |
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 | megameters | astronomical units | megameters |
---|---|---|---|
1 | ≡ 149597.8707 | 4 | ≡ 598391.4828 |
1.5 | ≡ 224396.80605 | 4.5 | ≡ 673190.41815 |
2 | ≡ 299195.7414 | 5 | ≡ 747989.3535 |
2.5 | ≡ 373994.67675 | 5.5 | ≡ 822788.28885 |
3 | ≡ 448793.6121 | 6 | ≡ 897587.2242 |
Megameter or megametre is a metric unit of length or distance. It is equal to 1 000 000 meters. Megametres are also occasionally found in science fiction. Plural name is megameters.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
megameter | Mm | ≡ 1×106 m | ≡ 1×106 m | Metric system SI |
megameters | astronomical units | megameters | astronomical units |
---|---|---|---|
1 | ≡ 6.6845871222684E-6 | 4 | ≡ 2.6738348489074E-5 |
1.5 | ≡ 1.0026880683403E-5 | 4.5 | ≡ 3.0080642050208E-5 |
2 | ≡ 1.3369174244537E-5 | 5 | ≡ 3.3422935611342E-5 |
2.5 | ≡ 1.6711467805671E-5 | 5.5 | ≡ 3.6765229172476E-5 |
3 | ≡ 2.0053761366805E-5 | 6 | ≡ 4.0107522733611E-5 |
astronomical units | megameters |
---|---|
1 | ≡ 149,597.8707 |
6.6845871222684 × 10-6 | ≡ 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 …) |