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 |
hand | 1,472,419,987,204.7 hand | 2,944,839,974,409.4 hand | 4,417,259,961,614.2 hand | 5,889,679,948,818.9 hand | 7,362,099,936,023.6 hand | 8,834,519,923,228.3 hand | 10 306 939 910 433 hand | 11 779 359 897 638 hand | 13 251 779 884 843 hand | 14 724 199 872 047 hand | 16 196 619 859 252 hand | 17 669 039 846 457 hand | 19 141 459 833 661 hand | 20 613 879 820 866 hand | 22 086 299 808 071 hand | 23 558 719 795 276 hand | 25 031 139 782 480 hand | 26 503 559 769 685 hand | 27 975 979 756 890 hand | 29 448 399 744 094 hand | 30 920 819 731 299 hand | 32 393 239 718 504 hand | 33 865 659 705 709 hand | 35 338 079 692 913 hand | 36 810 499 680 118 hand | 38 282 919 667 323 hand | 39 755 339 654 528 hand | 41 227 759 641 732 hand | 42 700 179 628 937 hand | 44 172 599 616 142 hand | 45 645 019 603 346 hand | 47 117 439 590 551 hand | 48 589 859 577 756 hand | 50 062 279 564 961 hand | 51 534 699 552 165 hand | 53 007 119 539 370 hand | 54 479 539 526 575 hand | 55 951 959 513 780 hand | 57 424 379 500 984 hand | 58 896 799 488 189 hand | 60 369 219 475 394 hand | 61 841 639 462 598 hand | 63 314 059 449 803 hand | 64 786 479 437 008 hand | 66 258 899 424 213 hand | 67 731 319 411 417 hand | 69 203 739 398 622 hand | 70 676 159 385 827 hand | 72 148 579 373 032 hand | 73 620 999 360 236 hand | 75 093 419 347 441 hand | 76 565 839 334 646 hand | 78 038 259 321 850 hand | 79 510 679 309 055 hand | 80 983 099 296 260 hand | 82 455 519 283 465 hand | 83 927 939 270 669 hand | 85 400 359 257 874 hand | 86 872 779 245 079 hand | 88 345 199 232 283 hand | 89 817 619 219 488 hand | 91 290 039 206 693 hand | 92 762 459 193 898 hand | 94 234 879 181 102 hand | 95 707 299 168 307 hand | 97 179 719 155 512 hand | 98 652 139 142 717 hand | 1.0012455912992 × 1014 hand | 1.0159697911713 × 1014 hand | 1.0306939910433 × 1014 hand | 1.0454181909154 × 1014 hand | 1.0601423907874 × 1014 hand | 1.0748665906594 × 1014 hand | 1.0895907905315 × 1014 hand | 1.1043149904035 × 1014 hand | 1.1190391902756 × 1014 hand | 1.1337633901476 × 1014 hand | 1.1484875900197 × 1014 hand | 1.1632117898917 × 1014 hand | 1.1779359897638 × 1014 hand | 1.1926601896358 × 1014 hand | 1.2073843895079 × 1014 hand | 1.2221085893799 × 1014 hand | 1.236832789252 × 1014 hand | 1.251556989124 × 1014 hand | 1.2662811889961 × 1014 hand | 1.2810053888681 × 1014 hand | 1.2957295887402 × 1014 hand | 1.3104537886122 × 1014 hand | 1.3251779884843 × 1014 hand | 1.3399021883563 × 1014 hand | 1.3546263882283 × 1014 hand | 1.3693505881004 × 1014 hand | 1.3840747879724 × 1014 hand | 1.3987989878445 × 1014 hand | 1.4135231877165 × 1014 hand | 1.4282473875886 × 1014 hand | 1.4429715874606 × 1014 hand | 1.4576957873327 × 1014 hand | 1.4724199872047 × 1014 hand |
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 | hands | astronomical units | hands |
---|---|---|---|
1 | ≡ 1472419987204.7 | 4 | ≡ 5889679948818.9 |
1.5 | ≡ 2208629980807.1 | 4.5 | ≡ 6625889942421.3 |
2 | ≡ 2944839974409.4 | 5 | ≡ 7362099936023.6 |
2.5 | ≡ 3681049968011.8 | 5.5 | ≡ 8098309929626 |
3 | ≡ 4417259961614.2 | 6 | ≡ 8834519923228.3 |
The hand is a non-SI unit of measurement of length standardized to 4 inches (101.6 mm). It is used to measure the height of horses in some English-speaking countries, including Australia, Canada, the Republic of Ireland, the United Kingdom and the United States.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
hand | ≡ 4 in | ≡ 0.1016 m | Metric system Non-SI |
hands | astronomical units | hands | astronomical units |
---|---|---|---|
1 | ≡ 6.7915405162247E-13 | 4 | ≡ 2.7166162064899E-12 |
1.5 | ≡ 1.0187310774337E-12 | 4.5 | ≡ 3.0561932323011E-12 |
2 | ≡ 1.3583081032449E-12 | 5 | ≡ 3.3957702581124E-12 |
2.5 | ≡ 1.6978851290562E-12 | 5.5 | ≡ 3.7353472839236E-12 |
3 | ≡ 2.0374621548674E-12 | 6 | ≡ 4.0749243097348E-12 |
astronomical units | hands |
---|---|
1 | ≡ 1,472,419,987,204.7 |
6.7915405162247 × 10-13 | ≡ 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 …) |