parsec | 1 pc | 2 pc | 3 pc | 4 pc | 5 pc | 6 pc | 7 pc | 8 pc | 9 pc | 10 pc | 11 pc | 12 pc | 13 pc | 14 pc | 15 pc | 16 pc | 17 pc | 18 pc | 19 pc | 20 pc | 21 pc | 22 pc | 23 pc | 24 pc | 25 pc | 26 pc | 27 pc | 28 pc | 29 pc | 30 pc | 31 pc | 32 pc | 33 pc | 34 pc | 35 pc | 36 pc | 37 pc | 38 pc | 39 pc | 40 pc | 41 pc | 42 pc | 43 pc | 44 pc | 45 pc | 46 pc | 47 pc | 48 pc | 49 pc | 50 pc | 51 pc | 52 pc | 53 pc | 54 pc | 55 pc | 56 pc | 57 pc | 58 pc | 59 pc | 60 pc | 61 pc | 62 pc | 63 pc | 64 pc | 65 pc | 66 pc | 67 pc | 68 pc | 69 pc | 70 pc | 71 pc | 72 pc | 73 pc | 74 pc | 75 pc | 76 pc | 77 pc | 78 pc | 79 pc | 80 pc | 81 pc | 82 pc | 83 pc | 84 pc | 85 pc | 86 pc | 87 pc | 88 pc | 89 pc | 90 pc | 91 pc | 92 pc | 93 pc | 94 pc | 95 pc | 96 pc | 97 pc | 98 pc | 99 pc | 100 pc |
spat | 30,856.7758149 S | 61,713.5516298 S | 92,570.3274447 S | 123,427.1032597 S | 154,283.8790746 S | 185,140.6548895 S | 215,997.4307044 S | 246,854.2065193 S | 277,710.9823342 S | 308,567.7581491 S | 339,424.5339641 S | 370,281.3097790 S | 401,138.0855939 S | 431,994.8614088 S | 462,851.6372237 S | 493,708.4130386 S | 524,565.1888535 S | 555,421.9646685 S | 586,278.7404834 S | 617,135.5162983 S | 647,992.2921132 S | 678,849.0679281 S | 709,705.8437430 S | 740,562.6195579 S | 771,419.3953728 S | 802,276.1711878 S | 833,132.9470027 S | 863,989.7228176 S | 894,846.4986325 S | 925,703.2744474 S | 956,560.0502623 S | 987,416.8260772 S | 1,018,273.6018922 S | 1,049,130.3777071 S | 1,079,987.153522 S | 1,110,843.9293369 S | 1,141,700.7051518 S | 1,172,557.4809667 S | 1,203,414.2567816 S | 1,234,271.0325965 S | 1,265,127.8084115 S | 1,295,984.5842264 S | 1,326,841.3600413 S | 1,357,698.1358562 S | 1,388,554.9116711 S | 1,419,411.687486 S | 1,450,268.4633009 S | 1,481,125.2391159 S | 1,511,982.0149308 S | 1,542,838.7907457 S | 1,573,695.5665606 S | 1,604,552.3423755 S | 1,635,409.1181904 S | 1,666,265.8940053 S | 1,697,122.6698203 S | 1,727,979.4456352 S | 1,758,836.2214501 S | 1,789,692.997265 S | 1,820,549.7730799 S | 1,851,406.5488948 S | 1,882,263.3247097 S | 1,913,120.1005246 S | 1,943,976.8763396 S | 1,974,833.6521545 S | 2,005,690.4279694 S | 2,036,547.2037843 S | 2,067,403.9795992 S | 2,098,260.7554141 S | 2,129,117.531229 S | 2,159,974.307044 S | 2,190,831.0828589 S | 2,221,687.8586738 S | 2,252,544.6344887 S | 2,283,401.4103036 S | 2,314,258.1861185 S | 2,345,114.9619334 S | 2,375,971.7377484 S | 2,406,828.5135633 S | 2,437,685.2893782 S | 2,468,542.0651931 S | 2,499,398.841008 S | 2,530,255.6168229 S | 2,561,112.3926378 S | 2,591,969.1684528 S | 2,622,825.9442677 S | 2,653,682.7200826 S | 2,684,539.4958975 S | 2,715,396.2717124 S | 2,746,253.0475273 S | 2,777,109.8233422 S | 2,807,966.5991571 S | 2,838,823.3749721 S | 2,869,680.150787 S | 2,900,536.9266019 S | 2,931,393.7024168 S | 2,962,250.4782317 S | 2,993,107.2540466 S | 3,023,964.0298615 S | 3,054,820.8056765 S | 3,085,677.5814914 S |
The parsec (symbol: pc) is a unit of length used to measure large distances to astronomical objects outside the Solar System.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
parsec | pc | Distant point with a parallax shift of one arc second from a base of one astronomical unit. | ≈ 30 856 775 814 913 700 m | Science - Astronomy (Length) |
parsecs | spats | parsecs | spats |
---|---|---|---|
1 | ≈ 30856.775814914 | 4 | ≈ 123427.10325965 |
1.5 | ≈ 46285.163722371 | 4.5 | ≈ 138855.49116711 |
2 | ≈ 61713.551629827 | 5 | ≈ 154283.87907457 |
2.5 | ≈ 77141.939537284 | 5.5 | ≈ 169712.26698203 |
3 | ≈ 92570.327444741 | 6 | ≈ 185140.65488948 |
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 | parsecs | spats | parsecs |
---|---|---|---|
1 | ≈ 3.2407792894444E-5 | 4 | ≈ 0.00012963117157777 |
1.5 | ≈ 4.8611689341665E-5 | 4.5 | ≈ 0.000145835068025 |
2 | ≈ 6.4815585788887E-5 | 5 | ≈ 0.00016203896447222 |
2.5 | ≈ 8.1019482236109E-5 | 5.5 | ≈ 0.00017824286091944 |
3 | ≈ 9.7223378683331E-5 | 6 | ≈ 0.00019444675736666 |
parsecs | spats |
---|---|
1 | ≈ 30,856.7758149 |
3.2407792894444 × 10-5 | ≈ 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 …) |