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 |
petameter | 0.0001496 Pm | 0.0002992 Pm | 0.0004488 Pm | 0.0005984 Pm | 0.0007480 Pm | 0.0008976 Pm | 0.0010472 Pm | 0.0011968 Pm | 0.0013464 Pm | 0.0014960 Pm | 0.0016456 Pm | 0.0017952 Pm | 0.0019448 Pm | 0.0020944 Pm | 0.0022440 Pm | 0.0023936 Pm | 0.0025432 Pm | 0.0026928 Pm | 0.0028424 Pm | 0.0029920 Pm | 0.0031416 Pm | 0.0032912 Pm | 0.0034408 Pm | 0.0035903 Pm | 0.0037399 Pm | 0.0038895 Pm | 0.0040391 Pm | 0.0041887 Pm | 0.0043383 Pm | 0.0044879 Pm | 0.0046375 Pm | 0.0047871 Pm | 0.0049367 Pm | 0.0050863 Pm | 0.0052359 Pm | 0.0053855 Pm | 0.0055351 Pm | 0.0056847 Pm | 0.0058343 Pm | 0.0059839 Pm | 0.0061335 Pm | 0.0062831 Pm | 0.0064327 Pm | 0.0065823 Pm | 0.0067319 Pm | 0.0068815 Pm | 0.0070311 Pm | 0.0071807 Pm | 0.0073303 Pm | 0.0074799 Pm | 0.0076295 Pm | 0.0077791 Pm | 0.0079287 Pm | 0.0080783 Pm | 0.0082279 Pm | 0.0083775 Pm | 0.0085271 Pm | 0.0086767 Pm | 0.0088263 Pm | 0.0089759 Pm | 0.0091255 Pm | 0.0092751 Pm | 0.0094247 Pm | 0.0095743 Pm | 0.0097239 Pm | 0.0098735 Pm | 0.0100231 Pm | 0.0101727 Pm | 0.0103223 Pm | 0.0104719 Pm | 0.0106214 Pm | 0.0107710 Pm | 0.0109206 Pm | 0.0110702 Pm | 0.0112198 Pm | 0.0113694 Pm | 0.0115190 Pm | 0.0116686 Pm | 0.0118182 Pm | 0.0119678 Pm | 0.0121174 Pm | 0.0122670 Pm | 0.0124166 Pm | 0.0125662 Pm | 0.0127158 Pm | 0.0128654 Pm | 0.0130150 Pm | 0.0131646 Pm | 0.0133142 Pm | 0.0134638 Pm | 0.0136134 Pm | 0.0137630 Pm | 0.0139126 Pm | 0.0140622 Pm | 0.0142118 Pm | 0.0143614 Pm | 0.0145110 Pm | 0.0146606 Pm | 0.0148102 Pm | 0.0149598 Pm |
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 | petameters | astronomical units | petameters |
---|---|---|---|
1 | ≡ 0.0001495978707 | 4 | ≡ 0.0005983914828 |
1.5 | ≡ 0.00022439680605 | 4.5 | ≡ 0.00067319041815 |
2 | ≡ 0.0002991957414 | 5 | ≡ 0.0007479893535 |
2.5 | ≡ 0.00037399467675 | 5.5 | ≡ 0.00082278828885 |
3 | ≡ 0.0004487936121 | 6 | ≡ 0.0008975872242 |
Petameter or petametre is equal to 1015 meters (unit of length), comes from a combination of the metric prefix peta (P) and the SI unit of length meter (m). Plural name is petameters.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
petameter | Pm | ≡ 1×1015 m | ≡ 1×1015 m | Metric system SI |
petameters | astronomical units | petameters | astronomical units |
---|---|---|---|
1 | ≡ 6684.5871222684 | 4 | ≡ 26738.348489074 |
1.5 | ≡ 10026.880683403 | 4.5 | ≡ 30080.642050208 |
2 | ≡ 13369.174244537 | 5 | ≡ 33422.935611342 |
2.5 | ≡ 16711.467805671 | 5.5 | ≡ 36765.229172476 |
3 | ≡ 20053.761366805 | 6 | ≡ 40107.522733611 |
astronomical units | petameters |
---|---|
1 | ≡ 0.0001496 |
6,684.5871223 | ≡ 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 …) |