Question: How many Parsecs in a Light Year or how far is a Light Year compared to Parsecs?
Answer: A Light Year equals 0.306601394 Parsecs.
The distance light travels in a single year. It is unit of distance not of time. With this we have a convenient unit of distance, one that links the concepts of distance and time. It is 299792458 x 60 x 60 x 24 x 365.2242 meters. More specifically a Light Year is defined as the distance a photon would travel in free space and infinitely far from any gravitational or magnetic field in one Julian year (365.25 days of 86400 seconds each).
The distance to our nearest galaxy the Andromeda galaxy is 23,00,000 light years.
Unit for expressing distances to stars and galaxies, used by professional astronomers. Distances to the closest stars can be determined through measurement of their trigonometric parallax. The Parsec (pc) was defined to be the distance at which 1 AU (perpendicular to the line of sight) subtends an angle of 1 arc second.
1 Parsec (pc) = distance d when angle is 1 arc second = 3.086*1013 km
| ly | pc | |
|---|---|---|
| 0.001 | = | 0.000307 |
| 0.002 | = | 0.000613 |
| 0.003 | = | 0.00092 |
| 0.004 | = | 0.001226 |
| 0.005 | = | 0.001533 |
| 0.006 | = | 0.00184 |
| 0.007 | = | 0.002146 |
| 0.008 | = | 0.002453 |
| 0.009 | = | 0.002759 |
| 0.01 | = | 0.003066 |
| 0.02 | = | 0.006132 |
| 0.03 | = | 0.009198 |
| 0.04 | = | 0.012264 |
| 0.05 | = | 0.01533 |
| 0.06 | = | 0.018396 |
| 0.07 | = | 0.021462 |
| 0.08 | = | 0.024528 |
| 0.09 | = | 0.027594 |
| 0.1 | = | 0.03066 |
| 0.2 | = | 0.06132 |
| 0.3 | = | 0.09198 |
| 0.4 | = | 0.122641 |
| 0.5 | = | 0.153301 |
| 0.6 | = | 0.183961 |
| 0.7 | = | 0.214621 |
| 0.8 | = | 0.245281 |
| 0.9 | = | 0.275941 |
| 1 | = | 0.306601 |
| 2 | = | 0.613203 |
| 3 | = | 0.919804 |
| 4 | = | 1.226406 |
| 5 | = | 1.533007 |
| 6 | = | 1.839608 |
| 7 | = | 2.14621 |
| 8 | = | 2.452811 |
| 9 | = | 2.759413 |
| 10 | = | 3.066014 |
| 11 | = | 3.372615 |
| 12 | = | 3.679217 |
| 13 | = | 3.985818 |
| 14 | = | 4.29242 |
| 15 | = | 4.599021 |
| 16 | = | 4.905622 |
| 17 | = | 5.212224 |
| 18 | = | 5.518825 |
| 19 | = | 5.825426 |
| 20 | = | 6.132028 |
| 21 | = | 6.438629 |
| 22 | = | 6.745231 |
| 23 | = | 7.051832 |
| 24 | = | 7.358433 |
| 25 | = | 7.665035 |
| 26 | = | 7.971636 |
| 27 | = | 8.278238 |
| 28 | = | 8.584839 |
| 29 | = | 8.89144 |
| 30 | = | 9.198042 |
| ly | pc | |
|---|---|---|
| 31 | = | 9.504643 |
| 32 | = | 9.811245 |
| 33 | = | 10.117846 |
| 34 | = | 10.424447 |
| 35 | = | 10.731049 |
| 36 | = | 11.03765 |
| 37 | = | 11.344252 |
| 38 | = | 11.650853 |
| 39 | = | 11.957454 |
| 40 | = | 12.264056 |
| 41 | = | 12.570657 |
| 42 | = | 12.877259 |
| 43 | = | 13.18386 |
| 44 | = | 13.490461 |
| 45 | = | 13.797063 |
| 46 | = | 14.103664 |
| 47 | = | 14.410266 |
| 48 | = | 14.716867 |
| 49 | = | 15.023468 |
| 50 | = | 15.33007 |
| 51 | = | 15.636671 |
| 52 | = | 15.943272 |
| 53 | = | 16.249874 |
| 54 | = | 16.556475 |
| 55 | = | 16.863077 |
| 56 | = | 17.169678 |
| 57 | = | 17.476279 |
| 58 | = | 17.782881 |
| 59 | = | 18.089482 |
| 60 | = | 18.396084 |
| 61 | = | 18.702685 |
| 62 | = | 19.009286 |
| 63 | = | 19.315888 |
| 64 | = | 19.622489 |
| 65 | = | 19.929091 |
| 66 | = | 20.235692 |
| 67 | = | 20.542293 |
| 68 | = | 20.848895 |
| 69 | = | 21.155496 |
| 70 | = | 21.462098 |
| 71 | = | 21.768699 |
| 72 | = | 22.0753 |
| 73 | = | 22.381902 |
| 74 | = | 22.688503 |
| 75 | = | 22.995105 |
| 76 | = | 23.301706 |
| 77 | = | 23.608307 |
| 78 | = | 23.914909 |
| 79 | = | 24.22151 |
| 80 | = | 24.528112 |
| 81 | = | 24.834713 |
| 82 | = | 25.141314 |
| 83 | = | 25.447916 |
| 84 | = | 25.754517 |
| 85 | = | 26.061118 |
| 86 | = | 26.36772 |
| 87 | = | 26.674321 |
| ly | pc | |
|---|---|---|
| 88 | = | 26.980923 |
| 89 | = | 27.287524 |
| 90 | = | 27.594125 |
| 91 | = | 27.900727 |
| 92 | = | 28.207328 |
| 93 | = | 28.51393 |
| 94 | = | 28.820531 |
| 95 | = | 29.127132 |
| 96 | = | 29.433734 |
| 97 | = | 29.740335 |
| 98 | = | 30.046937 |
| 99 | = | 30.353538 |
| 100 | = | 30.660139 |
| 101 | = | 30.966741 |
| 102 | = | 31.273342 |
| 103 | = | 31.579944 |
| 104 | = | 31.886545 |
| 105 | = | 32.193146 |
| 106 | = | 32.499748 |
| 107 | = | 32.806349 |
| 108 | = | 33.112951 |
| 109 | = | 33.419552 |
| 110 | = | 33.726153 |
| 111 | = | 34.032755 |
| 112 | = | 34.339356 |
| 113 | = | 34.645958 |
| 114 | = | 34.952559 |
| 115 | = | 35.25916 |
| 116 | = | 35.565762 |
| 117 | = | 35.872363 |
| 118 | = | 36.178964 |
| 119 | = | 36.485566 |
| 120 | = | 36.792167 |
| 121 | = | 37.098769 |
| 122 | = | 37.40537 |
| 123 | = | 37.711971 |
| 124 | = | 38.018573 |
| 125 | = | 38.325174 |
| 126 | = | 38.631776 |
| 127 | = | 38.938377 |
| 128 | = | 39.244978 |
| 129 | = | 39.55158 |
| 130 | = | 39.858181 |
| 131 | = | 40.164783 |
| 132 | = | 40.471384 |
| 133 | = | 40.777985 |
| 134 | = | 41.084587 |
| 135 | = | 41.391188 |
| 136 | = | 41.69779 |
| 137 | = | 42.004391 |
| 138 | = | 42.310992 |
| 139 | = | 42.617594 |
| 140 | = | 42.924195 |
| 141 | = | 43.230797 |
| 142 | = | 43.537398 |
| 143 | = | 43.843999 |
| 144 | = | 44.150601 |
| ly | pc | |
|---|---|---|
| 145 | = | 44.457202 |
| 146 | = | 44.763804 |
| 147 | = | 45.070405 |
| 148 | = | 45.377006 |
| 149 | = | 45.683608 |
| 150 | = | 45.990209 |
| 151 | = | 46.29681 |
| 152 | = | 46.603412 |
| 153 | = | 46.910013 |
| 154 | = | 47.216615 |
| 155 | = | 47.523216 |
| 156 | = | 47.829817 |
| 157 | = | 48.136419 |
| 158 | = | 48.44302 |
| 159 | = | 48.749622 |
| 160 | = | 49.056223 |
| 161 | = | 49.362824 |
| 162 | = | 49.669426 |
| 163 | = | 49.976027 |
| 164 | = | 50.282629 |
| 165 | = | 50.58923 |
| 166 | = | 50.895831 |
| 167 | = | 51.202433 |
| 168 | = | 51.509034 |
| 169 | = | 51.815636 |
| 170 | = | 52.122237 |
| 171 | = | 52.428838 |
| 172 | = | 52.73544 |
| 173 | = | 53.042041 |
| 174 | = | 53.348643 |
| 175 | = | 53.655244 |
| 176 | = | 53.961845 |
| 177 | = | 54.268447 |
| 178 | = | 54.575048 |
| 179 | = | 54.88165 |
| 180 | = | 55.188251 |
| 181 | = | 55.494852 |
| 182 | = | 55.801454 |
| 183 | = | 56.108055 |
| 184 | = | 56.414656 |
| 185 | = | 56.721258 |
| 186 | = | 57.027859 |
| 187 | = | 57.334461 |
| 188 | = | 57.641062 |
| 189 | = | 57.947663 |
| 190 | = | 58.254265 |
| 191 | = | 58.560866 |
| 192 | = | 58.867468 |
| 193 | = | 59.174069 |
| 194 | = | 59.48067 |
| 195 | = | 59.787272 |
| 196 | = | 60.093873 |
| 197 | = | 60.400475 |
| 198 | = | 60.707076 |
| 199 | = | 61.013677 |
| 200 | = | 61.320279 |
| 201 | = | 61.62688 |
| ly | pc | |
|---|---|---|
| 202 | = | 61.933482 |
| 203 | = | 62.240083 |
| 204 | = | 62.546684 |
| 205 | = | 62.853286 |
| 206 | = | 63.159887 |
| 207 | = | 63.466489 |
| 208 | = | 63.77309 |
| 209 | = | 64.079691 |
| 210 | = | 64.386293 |
| 211 | = | 64.692894 |
| 212 | = | 64.999496 |
| 213 | = | 65.306097 |
| 214 | = | 65.612698 |
| 215 | = | 65.9193 |
| 216 | = | 66.225901 |
| 217 | = | 66.532502 |
| 218 | = | 66.839104 |
| 219 | = | 67.145705 |
| 220 | = | 67.452307 |
| 221 | = | 67.758908 |
| 222 | = | 68.065509 |
| 223 | = | 68.372111 |
| 224 | = | 68.678712 |
| 225 | = | 68.985314 |
| 226 | = | 69.291915 |
| 227 | = | 69.598516 |
| 228 | = | 69.905118 |
| 229 | = | 70.211719 |
| 230 | = | 70.518321 |
| 231 | = | 70.824922 |
| 232 | = | 71.131523 |
| 233 | = | 71.438125 |
| 234 | = | 71.744726 |
| 235 | = | 72.051328 |
| 236 | = | 72.357929 |
| 237 | = | 72.66453 |
| 238 | = | 72.971132 |
| 239 | = | 73.277733 |
| 240 | = | 73.584335 |
| 241 | = | 73.890936 |
| 242 | = | 74.197537 |
| 243 | = | 74.504139 |
| 244 | = | 74.81074 |
| 245 | = | 75.117342 |
| 246 | = | 75.423943 |
| 247 | = | 75.730544 |
| 248 | = | 76.037146 |
| 249 | = | 76.343747 |
| 250 | = | 76.650349 |
| 255 | = | 78.183355 |
| 260 | = | 79.716362 |
| 265 | = | 81.249369 |
| 270 | = | 82.782376 |
| 275 | = | 84.315383 |
| 280 | = | 85.84839 |
| 285 | = | 87.381397 |
| 290 | = | 88.914404 |
| ly | pc | |
|---|---|---|
| 295 | = | 90.447411 |
| 300 | = | 91.980418 |
| 305 | = | 93.513425 |
| 310 | = | 95.046432 |
| 315 | = | 96.579439 |
| 320 | = | 98.112446 |
| 325 | = | 99.645453 |
| 330 | = | 101.17846 |
| 335 | = | 102.711467 |
| 340 | = | 104.244474 |
| 345 | = | 105.777481 |
| 350 | = | 107.310488 |
| 355 | = | 108.843495 |
| 360 | = | 110.376502 |
| 365 | = | 111.909509 |
| 370 | = | 113.442516 |
| 375 | = | 114.975523 |
| 380 | = | 116.50853 |
| 385 | = | 118.041537 |
| 390 | = | 119.574544 |
| 395 | = | 121.107551 |
| 400 | = | 122.640558 |
| 405 | = | 124.173565 |
| 410 | = | 125.706572 |
| 415 | = | 127.239579 |
| 420 | = | 128.772585 |
| 425 | = | 130.305592 |
| 430 | = | 131.838599 |
| 435 | = | 133.371606 |
| 440 | = | 134.904613 |
| 445 | = | 136.43762 |
| 450 | = | 137.970627 |
| 455 | = | 139.503634 |
| 460 | = | 141.036641 |
| 465 | = | 142.569648 |
| 470 | = | 144.102655 |
| 475 | = | 145.635662 |
| 480 | = | 147.168669 |
| 485 | = | 148.701676 |
| 490 | = | 150.234683 |
| 495 | = | 151.76769 |
| 500 | = | 153.300697 |
| 510 | = | 156.366711 |
| 520 | = | 159.432725 |
| 530 | = | 162.498739 |
| 540 | = | 165.564753 |
| 550 | = | 168.630767 |
| 560 | = | 171.696781 |
| 570 | = | 174.762795 |
| 580 | = | 177.828809 |
| 590 | = | 180.894822 |
| 600 | = | 183.960836 |
| 610 | = | 187.02685 |
| 620 | = | 190.092864 |
| 630 | = | 193.158878 |
| 640 | = | 196.224892 |
| 650 | = | 199.290906 |
| ly | pc | |
|---|---|---|
| 660 | = | 202.35692 |
| 670 | = | 205.422934 |
| 680 | = | 208.488948 |
| 690 | = | 211.554962 |
| 700 | = | 214.620976 |
| 710 | = | 217.68699 |
| 720 | = | 220.753004 |
| 730 | = | 223.819018 |
| 740 | = | 226.885032 |
| 750 | = | 229.951046 |
| 760 | = | 233.017059 |
| 770 | = | 236.083073 |
| 780 | = | 239.149087 |
| 790 | = | 242.215101 |
| 800 | = | 245.281115 |
| 810 | = | 248.347129 |
| 820 | = | 251.413143 |
| 830 | = | 254.479157 |
| 840 | = | 257.545171 |
| 850 | = | 260.611185 |
| 860 | = | 263.677199 |
| 870 | = | 266.743213 |
| 880 | = | 269.809227 |
| 890 | = | 272.875241 |
| 900 | = | 275.941255 |
| 910 | = | 279.007269 |
| 920 | = | 282.073282 |
| 930 | = | 285.139296 |
| 940 | = | 288.20531 |
| 950 | = | 291.271324 |
| 960 | = | 294.337338 |
| 970 | = | 297.403352 |
| 980 | = | 300.469366 |
| 990 | = | 303.53538 |
| 1000 | = | 306.601394 |
| 1100 | = | 337.261533 |
| 1200 | = | 367.921673 |
| 1300 | = | 398.581812 |
| 1400 | = | 429.241952 |
| 1500 | = | 459.902091 |
| 1600 | = | 490.56223 |
| 1700 | = | 521.22237 |
| 1800 | = | 551.882509 |
| 1900 | = | 582.542649 |
| 2000 | = | 613.202788 |
| 2100 | = | 643.862927 |
| 2200 | = | 674.523067 |
| 2300 | = | 705.183206 |
| 2400 | = | 735.843346 |
| 2500 | = | 766.503485 |
| 2600 | = | 797.163624 |
| 2700 | = | 827.823764 |
| 2800 | = | 858.483903 |
| 2900 | = | 889.144043 |
| 3000 | = | 919.804182 |
| 3100 | = | 950.464321 |
| 3200 | = | 981.124461 |