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 |
cubit | 299 195 741 400 cubit | 598 391 482 800 cubit | 897 587 224 200 cubit | 1 196 782 965 600 cubit | 1 495 978 707 000 cubit | 1 795 174 448 400 cubit | 2 094 370 189 800 cubit | 2 393 565 931 200 cubit | 2 692 761 672 600 cubit | 2 991 957 414 000 cubit | 3 291 153 155 400 cubit | 3 590 348 896 800 cubit | 3 889 544 638 200 cubit | 4 188 740 379 600 cubit | 4 487 936 121 000 cubit | 4 787 131 862 400 cubit | 5 086 327 603 800 cubit | 5 385 523 345 200 cubit | 5 684 719 086 600 cubit | 5 983 914 828 000 cubit | 6 283 110 569 400 cubit | 6 582 306 310 800 cubit | 6 881 502 052 200 cubit | 7 180 697 793 600 cubit | 7 479 893 535 000 cubit | 7 779 089 276 400 cubit | 8 078 285 017 800 cubit | 8 377 480 759 200 cubit | 8 676 676 500 600 cubit | 8 975 872 242 000 cubit | 9 275 067 983 400 cubit | 9 574 263 724 800 cubit | 9 873 459 466 200 cubit | 10 172 655 207 600 cubit | 10 471 850 949 000 cubit | 10 771 046 690 400 cubit | 11 070 242 431 800 cubit | 11 369 438 173 200 cubit | 11 668 633 914 600 cubit | 11 967 829 656 000 cubit | 12 267 025 397 400 cubit | 12 566 221 138 800 cubit | 12 865 416 880 200 cubit | 13 164 612 621 600 cubit | 13 463 808 363 000 cubit | 13 763 004 104 400 cubit | 14 062 199 845 800 cubit | 14 361 395 587 200 cubit | 14 660 591 328 600 cubit | 14 959 787 070 000 cubit | 15 258 982 811 400 cubit | 15 558 178 552 800 cubit | 15 857 374 294 200 cubit | 16 156 570 035 600 cubit | 16 455 765 777 000 cubit | 16 754 961 518 400 cubit | 17 054 157 259 800 cubit | 17 353 353 001 200 cubit | 17 652 548 742 600 cubit | 17 951 744 484 000 cubit | 18 250 940 225 400 cubit | 18 550 135 966 800 cubit | 18 849 331 708 200 cubit | 19 148 527 449 600 cubit | 19 447 723 191 000 cubit | 19 746 918 932 400 cubit | 20 046 114 673 800 cubit | 20 345 310 415 200 cubit | 20 644 506 156 600 cubit | 20 943 701 898 000 cubit | 21 242 897 639 400 cubit | 21 542 093 380 800 cubit | 21 841 289 122 200 cubit | 22 140 484 863 600 cubit | 22 439 680 605 000 cubit | 22 738 876 346 400 cubit | 23 038 072 087 800 cubit | 23 337 267 829 200 cubit | 23 636 463 570 600 cubit | 23 935 659 312 000 cubit | 24 234 855 053 400 cubit | 24 534 050 794 800 cubit | 24 833 246 536 200 cubit | 25 132 442 277 600 cubit | 25 431 638 019 000 cubit | 25 730 833 760 400 cubit | 26 030 029 501 800 cubit | 26 329 225 243 200 cubit | 26 628 420 984 600 cubit | 26 927 616 726 000 cubit | 27 226 812 467 400 cubit | 27 526 008 208 800 cubit | 27 825 203 950 200 cubit | 28 124 399 691 600 cubit | 28 423 595 433 000 cubit | 28 722 791 174 400 cubit | 29 021 986 915 800 cubit | 29 321 182 657 200 cubit | 29 620 378 398 600 cubit | 29 919 574 140 000 cubit |
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 | cubit | astronomical units | cubit |
---|---|---|---|
1 | ≈ 299195741400 | 4 | ≈ 1196782965600 |
1.5 | ≈ 448793612100 | 4.5 | ≈ 1346380836300 |
2 | ≈ 598391482800 | 5 | ≈ 1495978707000 |
2.5 | ≈ 747989353500 | 5.5 | ≈ 1645576577700 |
3 | ≈ 897587224200 | 6 | ≈ 1795174448400 |
The cubit is an ancient unit based on the forearm length from the tip of the middle finger to the bottom of the elbow. Cubits of various lengths were employed in many parts of the world in antiquity, during the Middle Ages and as recently as Early Modern Times. The term is still used in hedge laying, the length of the forearm being frequently used to determine the interval between stakes placed within the hedge.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
cubit | ≡ Distance from fingers to elbow ≈ 18 in | ≈ 0.5 m | Other (Length) |
cubit | astronomical units | cubit | astronomical units |
---|---|---|---|
1 | ≈ 3.3422935611342E-12 | 4 | ≈ 1.3369174244537E-11 |
1.5 | ≈ 5.0134403417013E-12 | 4.5 | ≈ 1.5040321025104E-11 |
2 | ≈ 6.6845871222684E-12 | 5 | ≈ 1.6711467805671E-11 |
2.5 | ≈ 8.3557339028356E-12 | 5.5 | ≈ 1.8382614586238E-11 |
3 | ≈ 1.0026880683403E-11 | 6 | ≈ 2.0053761366805E-11 |
astronomical units | cubit |
---|---|
1 | ≈ 299 195 741 400 |
3.3422935611342 × 10-12 | ≈ 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 …) |