light-day | 1 ly | 2 ly | 3 ly | 4 ly | 5 ly | 6 ly | 7 ly | 8 ly | 9 ly | 10 ly | 11 ly | 12 ly | 13 ly | 14 ly | 15 ly | 16 ly | 17 ly | 18 ly | 19 ly | 20 ly | 21 ly | 22 ly | 23 ly | 24 ly | 25 ly | 26 ly | 27 ly | 28 ly | 29 ly | 30 ly | 31 ly | 32 ly | 33 ly | 34 ly | 35 ly | 36 ly | 37 ly | 38 ly | 39 ly | 40 ly | 41 ly | 42 ly | 43 ly | 44 ly | 45 ly | 46 ly | 47 ly | 48 ly | 49 ly | 50 ly | 51 ly | 52 ly | 53 ly | 54 ly | 55 ly | 56 ly | 57 ly | 58 ly | 59 ly | 60 ly | 61 ly | 62 ly | 63 ly | 64 ly | 65 ly | 66 ly | 67 ly | 68 ly | 69 ly | 70 ly | 71 ly | 72 ly | 73 ly | 74 ly | 75 ly | 76 ly | 77 ly | 78 ly | 79 ly | 80 ly | 81 ly | 82 ly | 83 ly | 84 ly | 85 ly | 86 ly | 87 ly | 88 ly | 89 ly | 90 ly | 91 ly | 92 ly | 93 ly | 94 ly | 95 ly | 96 ly | 97 ly | 98 ly | 99 ly | 100 ly |
hectometer | 259 020 683 712 hm | 518 041 367 424 hm | 777 062 051 136 hm | 1 036 082 734 848 hm | 1 295 103 418 560 hm | 1 554 124 102 272 hm | 1 813 144 785 984 hm | 2 072 165 469 696 hm | 2 331 186 153 408 hm | 2 590 206 837 120 hm | 2 849 227 520 832 hm | 3 108 248 204 544 hm | 3 367 268 888 256 hm | 3 626 289 571 968 hm | 3 885 310 255 680 hm | 4 144 330 939 392 hm | 4 403 351 623 104 hm | 4 662 372 306 816 hm | 4 921 392 990 528 hm | 5 180 413 674 240 hm | 5 439 434 357 952 hm | 5 698 455 041 664 hm | 5 957 475 725 376 hm | 6 216 496 409 088 hm | 6 475 517 092 800 hm | 6 734 537 776 512 hm | 6 993 558 460 224 hm | 7 252 579 143 936 hm | 7 511 599 827 648 hm | 7 770 620 511 360 hm | 8 029 641 195 072 hm | 8 288 661 878 784 hm | 8 547 682 562 496 hm | 8 806 703 246 208 hm | 9 065 723 929 920 hm | 9 324 744 613 632 hm | 9 583 765 297 344 hm | 9 842 785 981 056 hm | 10 101 806 664 768 hm | 10 360 827 348 480 hm | 10 619 848 032 192 hm | 10 878 868 715 904 hm | 11 137 889 399 616 hm | 11 396 910 083 328 hm | 11 655 930 767 040 hm | 11 914 951 450 752 hm | 12 173 972 134 464 hm | 12 432 992 818 176 hm | 12 692 013 501 888 hm | 12 951 034 185 600 hm | 13 210 054 869 312 hm | 13 469 075 553 024 hm | 13 728 096 236 736 hm | 13 987 116 920 448 hm | 14 246 137 604 160 hm | 14 505 158 287 872 hm | 14 764 178 971 584 hm | 15 023 199 655 296 hm | 15 282 220 339 008 hm | 15 541 241 022 720 hm | 15 800 261 706 432 hm | 16 059 282 390 144 hm | 16 318 303 073 856 hm | 16 577 323 757 568 hm | 16 836 344 441 280 hm | 17 095 365 124 992 hm | 17 354 385 808 704 hm | 17 613 406 492 416 hm | 17 872 427 176 128 hm | 18 131 447 859 840 hm | 18 390 468 543 552 hm | 18 649 489 227 264 hm | 18 908 509 910 976 hm | 19 167 530 594 688 hm | 19 426 551 278 400 hm | 19 685 571 962 112 hm | 19 944 592 645 824 hm | 20 203 613 329 536 hm | 20 462 634 013 248 hm | 20 721 654 696 960 hm | 20 980 675 380 672 hm | 21 239 696 064 384 hm | 21 498 716 748 096 hm | 21 757 737 431 808 hm | 22 016 758 115 520 hm | 22 275 778 799 232 hm | 22 534 799 482 944 hm | 22 793 820 166 656 hm | 23 052 840 850 368 hm | 23 311 861 534 080 hm | 23 570 882 217 792 hm | 23 829 902 901 504 hm | 24 088 923 585 216 hm | 24 347 944 268 928 hm | 24 606 964 952 640 hm | 24 865 985 636 352 hm | 25 125 006 320 064 hm | 25 384 027 003 776 hm | 25 643 047 687 488 hm | 25 902 068 371 200 hm |
The light-day is a unit of length useful in astronomy, telecommunications and relativistic physics. It is defined as the distance that light travels in free space in oneday, and is equal to exactly 2.59020683712×1013 metres.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
light-day | ly | ≡ 24 light-hours | ≡ 2.59020683712×1013 m | Science - Astronomy (Length) |
light-days | hectometers | light-days | hectometers |
---|---|---|---|
1 | ≡ 259020683712 | 4 | ≡ 1036082734848 |
1.5 | ≡ 388531025568 | 4.5 | ≡ 1165593076704 |
2 | ≡ 518041367424 | 5 | ≡ 1295103418560 |
2.5 | ≡ 647551709280 | 5.5 | ≡ 1424613760416 |
3 | ≡ 777062051136 | 6 | ≡ 1554124102272 |
Hectometer or hectometre is a measurement of distance. It is equal to 100 meters. It is a uncommonly used unit of length in the metric system. Plural name is hectometers.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
hectometer | hm | ≡ 1×102 m | ≡ 1×102 m | Metric system SI |
hectometers | light-days | hectometers | light-days |
---|---|---|---|
1 | ≡ 3.8606955462749E-12 | 4 | ≡ 1.54427821851E-11 |
1.5 | ≡ 5.7910433194124E-12 | 4.5 | ≡ 1.7373129958237E-11 |
2 | ≡ 7.7213910925498E-12 | 5 | ≡ 1.9303477731375E-11 |
2.5 | ≡ 9.6517388656873E-12 | 5.5 | ≡ 2.1233825504512E-11 |
3 | ≡ 1.1582086638825E-11 | 6 | ≡ 2.3164173277649E-11 |
light-days | hectometers |
---|---|
1 | ≡ 259 020 683 712 |
3.8606955462749 × 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 …) |