List of exoplanets discovered in 2018
This List of exoplanets discovered in 2018 is a list of confirmed exoplanets that were first observed during 2018.
For exoplanets detected only by radial velocity, the listed value for mass is a lower limit. See Minimum mass for more information.
| Name | Mass | Radius | Period | Semi-major axis | Temp. | Discovery method | Distance | Host star mass | Host star temp. | Remarks |
| 24 Boötis b | 0.91 | 30.3506 | 0.190 | radial vel. | 313.9 | 0.99 | 4893 | |||
| COROT-20c | 17 | 1675 | 2.90 | radial vel. | 2819 | 1.14 | 6050 | Brown dwarf | ||
| DE Canum Venaticorum b | 12 | 4098.1 | 5.75 | timing | 99.64 | 0.51 | ||||
| Gamma Librae b | 1.02 | 415.2 | 1.24 | radial vel. | 154.7 | 1.47 | 4822 | |||
| Gamma Librae c | 4.58 | 964.6 | 2.17 | radial vel. | 154.7 | 1.47 | 4822 | |||
| Gliese 15 Ac | 0.11 | 7600 | 5.4 | radial vel. | 11.6 | 0.38 | 3567 | |||
| Gliese 96 b | 0.06186 | 73.94 | 0.291 | radial vel. | 38.929 | 0.60 | 3785 | |||
| Gliese 143 b | 0.09637 | 0.228 | 35.589 | 0.1932 | transit | 53.25 | 0.76 | |||
| Gliese 1132 c | 0.00831 | 8.929 | 0.0476 | 300 | radial vel. | 41.153 | 0.181 | 3270 | ||
| Gliese 1265 b | 0.023 | 3.6511 | 0.026 | radial vel. | 33.45 | 0.18 | 3236 | Host star also known as LP 819-052 | ||
| Gliese 3779 b | 0.025 | 3.0232 | 0.026 | radial vel. | 44.84 | 0.27 | 3324 | Host star also known as Ross 1020 | ||
| HAT-P-11c | 1.60 | 3407 | 4.13 | radial vel. | 123.31 | 0.809 | 4780 | |||
| HATS-39b | 0.63 | 1.57 | 4.5776348 | 0.06007 | 1645 | transit | 2910 | 1.379 | 6572 | |
| HATS-40b | 1.59 | 1.58 | 3.2642736 | 0.04997 | 2101 | transit | 4550 | 1.561 | 6460 | |
| 9.7 | 1.33 | 4.193649 | 0.0583 | 1710 | transit | 2457 | 1.496 | 6424 | ||
| HATS-42b | 1.88 | 1.40 | 2.2921020 | 0.03689 | 1856 | transit | 2672 | 1.273 | 6060 | |
| HATS-54b | 0.753 | 1.015 | 2.5441765 | 0.0370 | 1429 | transit | 2350 | 1.05 | 5621 | Host star also known as NGTS-22 |
| HATS-55b | 0.921 | 1.251 | 4.2042001 | 0.05412 | 1367 | transit | 2034 | 1.20 | 6214 | |
| HATS-56b | 0.602 | 1.688 | 4.324799 | 0.06043 | 1902 | transit | 1882 | 1.57 | 6536 | |
| HATS-57b | 3.147 | 1.139 | 2.3506210 | 0.03493 | 1413.4 | transit | 913 | 1.03 | 5587 | |
| HATS-58Ab | 1.03 | 1.095 | 4.2180896 | 0.05798 | 1721 | transit | 1605 | 1.46 | 7175 | |
| HATS-59b | 0.806 | 1.126 | 5.416081 | 0.06112 | 1128 | transit | 2140 | 1.04 | 5670 | |
| HATS-59c | 12.70 | 1422 | 2.504 | 175.9 | radial vel. | 2140 | 1.04 | 5670 | ||
| HATS-60b | 0.662 | 1.153 | 3.560829 | 0.04708 | 1528 | transit | 1609 | 1.097 | 5688 | |
| HATS-61b | 3.40 | 1.195 | 7.817953 | 0.07908 | 1226.1 | transit | 2262 | 1.08 | 5542 | |
| HATS-62b | 0.179 | 1.055 | 3.2768837 | 0.04163 | 1237 | transit | 1731 | 0.90 | 5416 | |
| HATS-63b | 0.960 | 1.207 | 3.0566527 | 0.04026 | 1398.3 | transit | 2070 | 0.93 | 5627 | |
| HATS-64b | 0.960 | 1.679 | 4.908897 | 0.06562 | 1793 | transit | 3640 | 1.56 | 6554 | |
| HATS-65b | 0.821 | 1.501 | 3.1051610 | 0.04497 | 1634 | transit | 1631 | 1.26 | 6277 | |
| HATS-66b | 5.33 | 1.411 | 3.1414391 | 0.04714 | 1998 | transit | 5040 | 1.41 | 6625 | |
| HATS-67b | 1.45 | 1.685 | 1.6091788 | 0.03032 | 2193 | transit | 3219 | 1.44 | 6594 | |
| HATS-68b | 1.290 | 1.232 | 3.5862202 | 0.05071 | 1741 | transit | 2004 | 1.35 | 6147 | |
| HATS-69b | 0.577 | 0.945 | 2.2252577 | 0.03211 | 1295.7 | transit | 1368 | 0.89 | 5137 | |
| HATS-70b | 12.9 | 1.384 | 1.8882378 | 0.03632 | 2730 | transit | 4263 | 0.81 | 1.08 | |
| 0.415 | 1.026 | 11.53533 | 0.1097 | 1228.3 | transit | 260.121 | 1.324 | 5521 | ||
| 1.17 | 1.44 | 4.12688 | 0.0568 | 2061 | transit | 645.72 | 1.43 | 6801 | ||
| HD 4917 b | 1.615 | 1.224 | 400.5 | 1.167 | radial vel. | 670.1 | 1.32 | 4802 | Two additional planets in system are suspected | |
| HD 13167 b | 3.31 | 1.167 | 2613 | 4.10 | radial vel. | 487.8 | 1.35 | 5671 | ||
| HD 14787 b | 1.121 | 1.250 | 676.6 | 1.70 | radial vel. | 389.9 | 1.43 | 4946 | ||
| HD 18015 b | 3.18 | 1.170 | 2278 | 3.87 | radial vel. | 405.2 | 1.49 | 5603 | ||
| HD 23472 b | 0.05638 | 0.179 | 17.667 | 0.121 | 543 | transit | 127.48 | 0.67 | 4684 | |
| HD 23472 c | 0.05405 | 0.167 | 29.625 | 0.170 | 467 | transit | 127.48 | 0.67 | 4684 | |
| HD 33142 c | 5.97 | 834 | radial vel. | 37.34 | 1.78 | 5009 | Marginal detection | |||
| HD 55696 b | 3.87 | 1827 | 3.18 | radial vel. | 255 | 1.29 | 6012 | |||
| HD 72490 b | 1.768 | 1.218 | 858 | 1.88 | radial vel. | 413.5 | 1.21 | 4934 | ||
| HD 72490 c | 4.5 | 3878 | 5.22 | radial vel. | 224 | 1.26 | 4867 | |||
| HD 89345 b | 0.110 | 0.660 | 11.81430 | 0.1066 | 1089 | transit | 433.1 | 1.16 | 5576 | Host star also known as K2-234 |
| HD 94834 b | 1.26 | 1.242 | 1576 | 2.74 | radial vel. | 321.0 | 1.11 | 4798 | ||
| HD 98736 b | 2.33 | 968.8 | 1.864 | radial vel. | 106 | 0.92 | 5271 | |||
| HD 125390 b | 22.16 | 1756.2 | 3.16 | radial vel. | 503 | 1.36 | 4850 | |||
| HD 148164 b | 1.23 | 328.55 | 0.9930 | radial vel. | 252 | 1.21 | 6032 | |||
| HD 148164 c | 5.16 | 5062 | 6.15 | radial vel. | 252 | 1.21 | 6032 | |||
| HD 158996 b | 14.0 | 820.2 | 2.1 | radial vel. | 933 | 1.8 | 4069 | |||
| HD 180053 b | 2.194 | 1.203 | 213.72 | 0.843 | radial vel. | 448.7 | 1.75 | 5131 | ||
| HD 180617 b | 0.03839 | 105.9 | 0.3357 | radial vel. | 19.28 | 0.45 | 3557 | Planetary orbit partly in habitable zone | ||
| HD 202772 Ab | 1.017 | 1.545 | 3.308958 | 0.05208 | 2132 | transit | 480.1 | 1.72 | 6272 | |
| HD 203473 b | 7.8 | 1552.9 | 2.73 | radial vel. | 237 | 1.12 | 5780 | |||
| HD 211810 b | 0.670 | 1558 | 2.656 | radial vel. | 211 | 1.03 | 5652 | |||
| HD 215152 b | 0.0057 | 5.7600 | 0.05764 | radial vel. | 70.48 | 0.770 | 4935 | |||
| HD 215152 e | 0.0091 | 25.197 | 0.1542 | radial vel. | 70.48 | 0.770 | 4935 | |||
| HD 219666 b | transit | Host star also known as TOI-118 | ||||||||
| HD 220197 b | 0.20 | 1728 | 2.729 | radial vel. | 210 | 0.91 | 5683 | |||
| HD 233832 b | 1.78 | 2058 | 2.827 | radial vel. | 192 | 0.71 | 4981 | |||
| HD 238914 b | 6.0 | 4100 | 5.7 | radial vel. | 982 | 1.47 | 4769 | |||
| K2-80d | 0.228 | 28.8673 | 0.1778 | transit | 658.7 | 0.90 | 5441 | |||
| K2-138b | 0.140 | 2.35322 | 0.03380 | transit | 597 | 0.93 | 5378 | |||
| K2-138c | 0.225 | 3.55987 | 0.04454 | transit | 597 | 0.93 | 5378 | |||
| K2-138d | 0.237 | 5.40478 | 0.05883 | transit | 597 | 0.93 | 5378 | |||
| K2-138e | 0.294 | 8.26144 | 0.07807 | transit | 597 | 0.93 | 5378 | |||
| K2-138f | 0.251 | 12.75759 | 0.10430 | transit | 597 | 0.93 | 5378 | |||
| K2-141c | 0.023 | 0.624 | 7.74850 | 0.06739 | transit | 202.16 | 0.708 | 4599 | ||
| K2-155b | 0.015 | 0.138 | 6.34365 | 0.0546 | 708 | transit | 237.94 | 0.65 | 4258 | |
| K2-155c | 0.020 | 0.174 | 13.85402 | 0.0946 | 583 | transit | 237.94 | 0.65 | 4258 | |
| K2-155d | 0.015 | 0.146 | 40.6835 | 0.1937 | 381 | transit | 237.94 | 0.65 | 4258 | |
| K2-156b | 0.103 | 0.813149 | 0.0149 | 1347 | transit | 492.0 | 0.66 | 4597 | ||
| K2-157b | 0.094 | 0.365257 | transit | 0.94 | 5456 | |||||
| K2-158b | 0.236 | 10.0605 | 0.0887 | 794 | transit | 647.1 | 0.92 | 5503 | ||
| K2-158c | 0.114 | 5.9028 | 0.0622 | 948 | transit | 647.1 | 0.92 | 5503 | ||
| K2-159b | 0.202 | 12.4221 | 0.1013 | 684 | transit | 560.4 | 0.90 | 5425 | ||
| K2-160b | 0.284 | 3.705871 | 0.04660 | transit | 1038 | 0.983 | 5649 | |||
| K2-161b | 0.546 | 9.283188 | 0.0861 | transit | 3070 | 0.987 | 4972 | |||
| K2-162b | 0.128 | 9.4589 | 0.0795 | 631 | transit | 407.3 | 0.75 | 4842 | ||
| K2-163b | 0.220 | 6.673117 | 0.06509 | transit | 684 | 0.826 | 4937 | |||
| K2-164b | 0.290 | 17.3551 | 0.1387 | transit | 1238 | 1.181 | 5791 | |||
| K2-165b | 0.1137 | 2.35499 | 0.03262 | transit | 440.6 | 0.835 | 5185 | |||
| K2-165c | 0.1386 | 4.38275 | 0.04935 | transit | 440.6 | 0.835 | 5185 | |||
| K2-165d | 0.236 | 14.1014 | 0.1076 | transit | 440.6 | 0.835 | 5185 | |||
| K2-166b | 0.195 | 8.5272 | 0.08583 | transit | 1577 | 1.16 | 5960 | |||
| 0.252 | 9.9775 | 0.0912 | transit | 264.5 | 1.02 | 5908 | ||||
| 0.191 | 15.8540 | 0.1195 | transit | 801 | 0.907 | 5554 | ||||
| 0.1136 | 6.38080 | 0.06764 | transit | 774 | 0.986 | 5548 | ||||
| 0.127 | 7.5765 | 0.07457 | transit | 1296 | 0.964 | 5748 | ||||
| 0.161 | 12.4000 | 0.1036 | transit | 1296 | 0.964 | 5748 | ||||
| 0.240 | 5.6285 | 0.05960 | transit | 2010 | 0.892 | 5250 | ||||
| 0.1486 | 14.3169 | 0.1128 | transit | 820.3 | 0.934 | 5569 | ||||
| K2-172c | 0.286 | 29.6268 | 0.1832 | transit | 820.3 | 0.934 | 5569 | |||
| K2-173b | 0.1435 | 5.86870 | 0.06105831 | transit | 2201 | 1.21 | 6351 | |||
| K2-259b | 0.207 | 15.4804 | 0.1271 | 795 | transit | 1374 | 1.14 | 6059 | ||
| K2-260b | 1.42 | 1.552 | 2.6266657 | 0.0404 | 1957 | transit | 2206 | 1.39 | 6367 | |
| K2-261b | 0.223 | 0.850 | 11.63344 | 0.102 | 1080 | transit | 699.9 | 1.10 | 5537 | |
| K2-263b | 0.0466 | 0.215 | 50.818947 | 0.2573 | 470 | transit | 532 | 0.88 | 5368 | |
| K2-264b | 0.203 | 5.839770 | 489 | transit | 609 | 0.47 | 3580 | |||
| K2-264c | 0.247 | 19.663650 | 326 | transit | 609 | 0.47 | 3580 | |||
| 0.0206 | 0.153 | 2.369172 | 0.03376 | transit | 454 | 0.912 | 5477 | |||
| K2-266b | 0.0356 | 0.29 | 0.658524 | 0.01306 | 1515 | transit | 251.7 | 0.686 | 4285 | |
| K2-266c | 0.00091 | 0.0629 | 7.8140 | 0.0679 | 664.5 | transit | 251.7 | 0.686 | 4285 | |
| K2-266d | 0.0296 | 0.261 | 14.69700 | 0.1035 | 538.3 | transit | 251.7 | 0.686 | 4285 | |
| K2-266e | 0.0261 | 0.244 | 19.4820 | 0.1249 | 490.1 | transit | 251.7 | 0.686 | 4285 | Two more planets are suspected |
| K2-267b | 3.0 | 1.051 | 6.180235 | 0.07229 | 1401 | transit | 1098 | 1.317 | 6202 | host star also known as EPIC 246851721 |
| K2-268b | 0.126 | 2.151894 | 0.0308 | 1121 | transit | 1081.1 | 0.84 | 5068 | ||
| K2-268c | 0.240 | 9.326841 | 0.0819 | 688 | transit | 1081.1 | 0.84 | 5068 | ||
| K2-269b | 0.140 | 4.144965 | 0.0531 | 1429 | transit | 1180.1 | 1.16 | 6209 | ||
| K2-270b | 0.123 | 1.543069 | 0.0247 | 1203 | transit | 924.75 | 0.85 | 4877 | ||
| K2-270c | 0.263 | 4.400028 | 0.0497 | 848 | transit | 924.75 | 0.85 | 4877 | ||
| K2-271b | 0.649 | 8.562421 | 0.0770 | 893 | transit | 1863.9 | 0.83 | 5644 | ||
| K2-272b | 0.260 | 14.453533 | 0.1081 | 655 | transit | 1391.3 | 0.81 | 5419 | ||
| K2-273b | 0.394 | 11.716332 | 0.0974 | 672 | transit | 1013.0 | 0.90 | 5200 | ||
| K2-274b | 0.196 | 14.129714 | 0.1064 | 589 | transit | 1013.0 | 0.81 | 5065 | ||
| K2-275b | 0.200 | 3.280961 | 0.0400 | 905 | transit | 404.73 | 0.79 | 4812 | ||
| K2-275c | 0.209 | 8.438756 | 0.0750 | 660 | transit | 404.73 | 0.79 | 4812 | ||
| K2-276b | 0.336 | 18.718269 | 0.1291 | 583 | transit | 1597.8 | 0.82 | 5139 | ||
| K2-277b | 0.185 | 6.326763 | 0.0675 | 958 | transit | 370.29 | 1.02 | 5741 | ||
| K2-278b | 0.266 | 3.334966 | 0.0488 | 1711 | transit | 2622.7 | 1.40 | 6747 | ||
| K2-279b | 0.108 | 7.122605 | 0.0670 | 879 | transit | 599.48 | 0.79 | 5558 | ||
| K2-280b | 0.684 | 19.895202 | 0.1488 | 744 | transit | 1294.5 | 1.11 | 5742 | ||
| K2-281b | 0.730 | 8.687721 | 0.0773 | 665 | transit | 1520.2 | 0.82 | 4812 | ||
| K2-282b | 0.252 | 4.169836 | 0.0499 | 1057 | transit | 1638.2 | 0.95 | 5523 | Two more planets discovered in 2019 and 2020 | |
| K2-283b | 0.314 | 1.921036 | 0.0291 | 1186 | transit | 1331.5 | 0.89 | 5060 | ||
| K2-284b | 0.248 | 4.795069 | 0.04771 | 653 | transit | 351.0 | 0.63 | 4140 | Very young host star | |
| K2-285b | 0.03046 | 0.231 | 3.471745 | 0.03817 | 1088.9 | transit | 508 | 0.83 | 4975 | |
| K2-285c | 0.04933 | 0.315 | 7.138048 | 0.0824 | 741.4 | transit | 508 | 0.83 | 4975 | |
| K2-285d | 0.020 | 0.221 | 10.45582 | 0.1178 | 619.9 | transit | 508 | 0.83 | 4975 | |
| K2-285e | 0.0337 | 0.174 | 14.76289 | 0.18041 | 500.9 | transit | 508 | 0.83 | 4975 | |
| 0.315 | 0.847 | 14.893291 | 0.1206 | 804 | transit | 518.7 | 1.06 | 5695 | ||
| K2-292b | 0.0771 | 0.235 | 16.9841 | 0.13 | 795 | transit | 372.76 | 1.00 | 5725 | Host star also known as HD 119130 |
| K2-295b | 0.335 |