fathom | 1 ftm | 2 ftm | 3 ftm | 4 ftm | 5 ftm | 6 ftm | 7 ftm | 8 ftm | 9 ftm | 10 ftm | 11 ftm | 12 ftm | 13 ftm | 14 ftm | 15 ftm | 16 ftm | 17 ftm | 18 ftm | 19 ftm | 20 ftm | 21 ftm | 22 ftm | 23 ftm | 24 ftm | 25 ftm | 26 ftm | 27 ftm | 28 ftm | 29 ftm | 30 ftm | 31 ftm | 32 ftm | 33 ftm | 34 ftm | 35 ftm | 36 ftm | 37 ftm | 38 ftm | 39 ftm | 40 ftm | 41 ftm | 42 ftm | 43 ftm | 44 ftm | 45 ftm | 46 ftm | 47 ftm | 48 ftm | 49 ftm | 50 ftm | 51 ftm | 52 ftm | 53 ftm | 54 ftm | 55 ftm | 56 ftm | 57 ftm | 58 ftm | 59 ftm | 60 ftm | 61 ftm | 62 ftm | 63 ftm | 64 ftm | 65 ftm | 66 ftm | 67 ftm | 68 ftm | 69 ftm | 70 ftm | 71 ftm | 72 ftm | 73 ftm | 74 ftm | 75 ftm | 76 ftm | 77 ftm | 78 ftm | 79 ftm | 80 ftm | 81 ftm | 82 ftm | 83 ftm | 84 ftm | 85 ftm | 86 ftm | 87 ftm | 88 ftm | 89 ftm | 90 ftm | 91 ftm | 92 ftm | 93 ftm | 94 ftm | 95 ftm | 96 ftm | 97 ftm | 98 ftm | 99 ftm | 100 ftm |
lunar distance | 4.757519471803 × 10-9 LD | 9.5150389436059 × 10-9 LD | 1.4272558415409 × 10-8 LD | 1.9030077887212 × 10-8 LD | 2.3787597359015 × 10-8 LD | 2.8545116830818 × 10-8 LD | 3.3302636302621 × 10-8 LD | 3.8060155774424 × 10-8 LD | 4.2817675246227 × 10-8 LD | 4.757519471803 × 10-8 LD | 5.2332714189833 × 10-8 LD | 5.7090233661635 × 10-8 LD | 6.1847753133438 × 10-8 LD | 6.6605272605241 × 10-8 LD | 7.1362792077044 × 10-8 LD | 7.6120311548847 × 10-8 LD | 8.087783102065 × 10-8 LD | 8.5635350492453 × 10-8 LD | 9.0392869964256 × 10-8 LD | 9.5150389436059 × 10-8 LD | 9.9907908907862 × 10-8 LD | 1.0466542837967 × 10-7 LD | 1.0942294785147 × 10-7 LD | 1.1418046732327 × 10-7 LD | 1.1893798679507 × 10-7 LD | 1.2369550626688 × 10-7 LD | 1.2845302573868 × 10-7 LD | 1.3321054521048 × 10-7 LD | 1.3796806468229 × 10-7 LD | 1.4272558415409 × 10-7 LD | 1.4748310362589 × 10-7 LD | 1.5224062309769 × 10-7 LD | 1.569981425695 × 10-7 LD | 1.617556620413 × 10-7 LD | 1.665131815131 × 10-7 LD | 1.7127070098491 × 10-7 LD | 1.7602822045671 × 10-7 LD | 1.8078573992851 × 10-7 LD | 1.8554325940032 × 10-7 LD | 1.9030077887212 × 10-7 LD | 1.9505829834392 × 10-7 LD | 1.9981581781572 × 10-7 LD | 2.0457333728753 × 10-7 LD | 2.0933085675933 × 10-7 LD | 2.1408837623113 × 10-7 LD | 2.1884589570294 × 10-7 LD | 2.2360341517474 × 10-7 LD | 2.2836093464654 × 10-7 LD | 2.3311845411834 × 10-7 LD | 2.3787597359015 × 10-7 LD | 2.4263349306195 × 10-7 LD | 2.4739101253375 × 10-7 LD | 2.5214853200556 × 10-7 LD | 2.5690605147736 × 10-7 LD | 2.6166357094916 × 10-7 LD | 2.6642109042097 × 10-7 LD | 2.7117860989277 × 10-7 LD | 2.7593612936457 × 10-7 LD | 2.8069364883637 × 10-7 LD | 2.8545116830818 × 10-7 LD | 2.9020868777998 × 10-7 LD | 2.9496620725178 × 10-7 LD | 2.9972372672359 × 10-7 LD | 3.0448124619539 × 10-7 LD | 3.0923876566719 × 10-7 LD | 3.13996285139 × 10-7 LD | 3.187538046108 × 10-7 LD | 3.235113240826 × 10-7 LD | 3.282688435544 × 10-7 LD | 3.3302636302621 × 10-7 LD | 3.3778388249801 × 10-7 LD | 3.4254140196981 × 10-7 LD | 3.4729892144162 × 10-7 LD | 3.5205644091342 × 10-7 LD | 3.5681396038522 × 10-7 LD | 3.6157147985702 × 10-7 LD | 3.6632899932883 × 10-7 LD | 3.7108651880063 × 10-7 LD | 3.7584403827243 × 10-7 LD | 3.8060155774424 × 10-7 LD | 3.8535907721604 × 10-7 LD | 3.9011659668784 × 10-7 LD | 3.9487411615965 × 10-7 LD | 3.9963163563145 × 10-7 LD | 4.0438915510325 × 10-7 LD | 4.0914667457505 × 10-7 LD | 4.1390419404686 × 10-7 LD | 4.1866171351866 × 10-7 LD | 4.2341923299046 × 10-7 LD | 4.2817675246227 × 10-7 LD | 4.3293427193407 × 10-7 LD | 4.3769179140587 × 10-7 LD | 4.4244931087767 × 10-7 LD | 4.4720683034948 × 10-7 LD | 4.5196434982128 × 10-7 LD | 4.5672186929308 × 10-7 LD | 4.6147938876489 × 10-7 LD | 4.6623690823669 × 10-7 LD | 4.7099442770849 × 10-7 LD | 4.757519471803 × 10-7 LD |
A fathom is a unit of length in the imperial and the U.S. customary systems equal to 6 feet (1.8288 metres), used especially for measuring the depth of water.
There are two yards (6 feet) in an imperial fathom. Originally the span of a man's outstretched arms, the size of a fathom has varied slightly depending on whether it was defined as a thousandth of an (Admiralty) nautical mile or as a multiple of the imperial yard. Formerly, the term was used for any of several units of length varying around 5–5 1⁄2 feet.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
fathom | ftm | ≡ 6 ft | = 1.8288 m | Imperial/US |
fathoms | lunar distance | fathoms | lunar distance |
---|---|---|---|
1 | ≈ 4.757519471803E-9 | 4 | ≈ 1.9030077887212E-8 |
1.5 | ≈ 7.1362792077044E-9 | 4.5 | ≈ 2.1408837623113E-8 |
2 | ≈ 9.5150389436059E-9 | 5 | ≈ 2.3787597359015E-8 |
2.5 | ≈ 1.1893798679507E-8 | 5.5 | ≈ 2.6166357094916E-8 |
3 | ≈ 1.4272558415409E-8 | 6 | ≈ 2.8545116830818E-8 |
Lunar distance (LD), also called Earth–Moon distance, Earth–Moon characteristic distance, or distance to the Moon, is as a unit of measure in astronomy. It is the average distance from the center of Earth to the center of the Moon.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
lunar distance | LD | ≈ 384402 km | ≈ 384 402 000 m | Science - Astronomy (Length) |
lunar distance | fathoms | lunar distance | fathoms |
---|---|---|---|
1 | ≈ 210193569.55381 | 4 | ≈ 840774278.21522 |
1.5 | ≈ 315290354.33071 | 4.5 | ≈ 945871062.99213 |
2 | ≈ 420387139.10761 | 5 | ≈ 1050967847.769 |
2.5 | ≈ 525483923.88451 | 5.5 | ≈ 1156064632.5459 |
3 | ≈ 630580708.66142 | 6 | ≈ 1261161417.3228 |
fathoms | lunar distance |
---|---|
1 | ≈ 4.757519471803 × 10-9 |
210,193,569.55381 | ≈ 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 …) |