lunar distance | 1 LD | 2 LD | 3 LD | 4 LD | 5 LD | 6 LD | 7 LD | 8 LD | 9 LD | 10 LD | 11 LD | 12 LD | 13 LD | 14 LD | 15 LD | 16 LD | 17 LD | 18 LD | 19 LD | 20 LD | 21 LD | 22 LD | 23 LD | 24 LD | 25 LD | 26 LD | 27 LD | 28 LD | 29 LD | 30 LD | 31 LD | 32 LD | 33 LD | 34 LD | 35 LD | 36 LD | 37 LD | 38 LD | 39 LD | 40 LD | 41 LD | 42 LD | 43 LD | 44 LD | 45 LD | 46 LD | 47 LD | 48 LD | 49 LD | 50 LD | 51 LD | 52 LD | 53 LD | 54 LD | 55 LD | 56 LD | 57 LD | 58 LD | 59 LD | 60 LD | 61 LD | 62 LD | 63 LD | 64 LD | 65 LD | 66 LD | 67 LD | 68 LD | 69 LD | 70 LD | 71 LD | 72 LD | 73 LD | 74 LD | 75 LD | 76 LD | 77 LD | 78 LD | 79 LD | 80 LD | 81 LD | 82 LD | 83 LD | 84 LD | 85 LD | 86 LD | 87 LD | 88 LD | 89 LD | 90 LD | 91 LD | 92 LD | 93 LD | 94 LD | 95 LD | 96 LD | 97 LD | 98 LD | 99 LD | 100 LD |
spat | 0.0003844 S | 0.0007688 S | 0.0011532 S | 0.0015376 S | 0.0019220 S | 0.0023064 S | 0.0026908 S | 0.0030752 S | 0.0034596 S | 0.0038440 S | 0.0042284 S | 0.0046128 S | 0.0049972 S | 0.0053816 S | 0.0057660 S | 0.0061504 S | 0.0065348 S | 0.0069192 S | 0.0073036 S | 0.0076880 S | 0.0080724 S | 0.0084568 S | 0.0088412 S | 0.0092256 S | 0.0096101 S | 0.0099945 S | 0.0103789 S | 0.0107633 S | 0.0111477 S | 0.0115321 S | 0.0119165 S | 0.0123009 S | 0.0126853 S | 0.0130697 S | 0.0134541 S | 0.0138385 S | 0.0142229 S | 0.0146073 S | 0.0149917 S | 0.0153761 S | 0.0157605 S | 0.0161449 S | 0.0165293 S | 0.0169137 S | 0.0172981 S | 0.0176825 S | 0.0180669 S | 0.0184513 S | 0.0188357 S | 0.0192201 S | 0.0196045 S | 0.0199889 S | 0.0203733 S | 0.0207577 S | 0.0211421 S | 0.0215265 S | 0.0219109 S | 0.0222953 S | 0.0226797 S | 0.0230641 S | 0.0234485 S | 0.0238329 S | 0.0242173 S | 0.0246017 S | 0.0249861 S | 0.0253705 S | 0.0257549 S | 0.0261393 S | 0.0265237 S | 0.0269081 S | 0.0272925 S | 0.0276769 S | 0.0280613 S | 0.0284457 S | 0.0288302 S | 0.0292146 S | 0.0295990 S | 0.0299834 S | 0.0303678 S | 0.0307522 S | 0.0311366 S | 0.0315210 S | 0.0319054 S | 0.0322898 S | 0.0326742 S | 0.0330586 S | 0.0334430 S | 0.0338274 S | 0.0342118 S | 0.0345962 S | 0.0349806 S | 0.0353650 S | 0.0357494 S | 0.0361338 S | 0.0365182 S | 0.0369026 S | 0.0372870 S | 0.0376714 S | 0.0380558 S | 0.0384402 S |
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 | spats | lunar distance | spats |
---|---|---|---|
1 | ≈ 0.000384402 | 4 | ≈ 0.001537608 |
1.5 | ≈ 0.000576603 | 4.5 | ≈ 0.001729809 |
2 | ≈ 0.000768804 | 5 | ≈ 0.00192201 |
2.5 | ≈ 0.000961005 | 5.5 | ≈ 0.002114211 |
3 | ≈ 0.001153206 | 6 | ≈ 0.002306412 |
The spat (symbol S) is also an obsolete unit of distance used in astronomy. It is equal to 1000000000 kilometres (1 Tm or 1012 m). It is about 6.6846 astronomical units (AU), 1.057×10−4 light-years or3.240×10−5 parsecs.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
spat | S | ≡ 1×1012 m | ≡ 1×1012 m | Science - Astronomy (Length) |
spats | lunar distance | spats | lunar distance |
---|---|---|---|
1 | ≈ 2601.4432807322 | 4 | ≈ 10405.773122929 |
1.5 | ≈ 3902.1649210982 | 4.5 | ≈ 11706.494763295 |
2 | ≈ 5202.8865614643 | 5 | ≈ 13007.216403661 |
2.5 | ≈ 6503.6082018304 | 5.5 | ≈ 14307.938044027 |
3 | ≈ 7804.3298421965 | 6 | ≈ 15608.659684393 |
lunar distance | spats |
---|---|
1 | ≈ 0.0003844 |
2,601.4432807 | ≈ 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 …) |