This is a List of exoplanets discovered in 2013.
For exoplanets detected only by radial velocity, the mass value is actually a lower limit. (See Minimum mass for more information)
Name | Mass (MJ) | Radius (RJ) | Period (days) | Semi-major axis (AU) | Temp. (K) [1] | Discovery method | Distance (ly) | Host star mass (M☉) | Host star temp. (K) | Remarks |
---|---|---|---|---|---|---|---|---|---|---|
2MASS J01225093-2439505 b | 24.5 | 52 | imaging | 120 | 0.4 | 3530 | [2] | |||
BD+15 2940 b | 1.11 | 137.48 | 0.539 | radial vel. | 572.2 | 1.1 | 4796 | [3] | ||
CoRoT-25b | 0.27 | 1.08 | 4.86069 | 0.0578 | transit | 3300 | 1.09 | 6040 | [4] | |
CoRoT-26b | 0.52 | 1.26 | 4.20474 | 0.0526 | transit | 5400 | 1.09 | 5590 | [4] | |
DENIS-P J082303.1-491201 b | 28.5 | 246.36 | 0.36 | astrometry | 67.7 | 0.07 | 2150 | [5] | ||
Gliese 163 b | 0.03335 | 8.63182 | 0.0607 | radial vel. | 48.8 | 0.4 | 3500 | [6] | ||
Gliese 163 c | 0.0214 | 25.63058 | 0.1254 | radial vel. | 48.8 | 0.4 | 3500 | [6] | ||
Gliese 163 d | 0.0925 | 603.95116 | 1.0304 | radial vel. | 48.8 | 0.4 | 3500 | [6] | ||
Gliese 221b | 0.027 | 3.8728 | 0.0428 | radial vel. | 66 | 0.7 | 4324 | [7] [8] Disputed [9] | ||
Gliese 221 c | 0.17 | 125.94 | 0.435 | radial vel. | 66 | 0.7 | 4324 | [7] [8] | ||
Gliese 328b | 2.3 | 4100 | 4.5 | radial vel. | 65.3 | 0.69 | 3900 | [10] | ||
Gliese 504 b | 4 | 43.5 | imaging | 58.5 | 1.22 | 6234 | [11] | |||
HAT-P-44b | 0.352 | 1.242 | 4.301219 | 0.0507 | transit | 1180 | 0.94 | 5295 | [12] | |
HAT-P-44c | 4 | 872.2 | 1.752 | radial vel. | 1180 | 0.94 | 5295 | Period is ambiguous [12] | ||
HAT-P-45b | 0.892 | 1.426 | 3.128992 | 0.0452 | transit | 990 | 1.26 | 6330 | [12] | |
HAT-P-46b | 0.493 | 1.284 | 4.463129 | 0.0577 | transit | 970 | 1.28 | 6120 | [12] | |
HATS-2b | 1.345 | 1.168 | 1.354133 | 0.023 | transit | 1200 | 0.88 | 5227 | [13] | |
HATS-3b | 1.071 | 1.381 | 3.547851 | 0.0485 | 1648 | transit | 1480 | 1.21 | 6351 | [14] |
HD 2952 b | 1.6 | 311.6 | 1.2 | radial vel. | 375.8 | 2.54 | 4844 | [15] | ||
HD 13908 b | 0.865 | 19.382 | 0.154 | radial vel. | 218.2 | 1.29 | 6255 | [16] | ||
HD 13908 c | 5.13 | 931 | 2.03 | radial vel. | 218.2 | 1.29 | 6255 | [16] | ||
HD 65216c | 0.17 | 152.6 | 0.54 | radial vel. | 116.1 | 0.92 | 5666 | [17] False positive, another planet with same assigned name discovered in 2019. [18] | ||
HD 95086 b | 5 | 55.7 | imaging | 298.7 | 1.6 | [19] | ||||
HD 103774 b | 0.367 | 5.8881 | 0.07 | radial vel. | 173.1 | 1.33 | 6489 | [7] | ||
HD 106906 b | 11 | 650 | imaging | 299.5 | 1.5 | 6516 | [20] | |||
HD 109271 b | 0.054 | 7.8543 | 0.079 | radial vel. | 185.6 | 1.05 | 5783 | [7] | ||
HD 109271 c | 0.076 | 30.93 | 0.196 | radial vel. | 185.6 | 1.05 | 5783 | [7] | ||
HD 113337 b | 2.83 | 324 | 0.92 | radial vel. | 122.0 | 1.4 | 6576.6 | [21] | ||
HD 120084 b | 4.5 | 2082 | 4.3 | radial vel. | 318.5 | 2.39 | 4892 | [15] | ||
HD 159243 b | 1.13 | 12.62 | 0.11 | radial vel. | 223.7 | 1.12 | 6123 | [16] | ||
HD 159243 c | 1.9 | 248.4 | 0.8 | radial vel. | 223.7 | 1.12 | 6123 | [16] | ||
HD 233604 b | 6.575 | 192 | 0.747 | radial vel. | 2830±90 | 1.5 | 4791 | [3] | ||
HD 285507 b | 0.92±0.03 | 6.0962±0.0002 | radial vel. | 153 | 0.73±0.03 | 4503+85 −61 | member of Hyades (star cluster) [22] [23] | |||
HD 112410 b | 9.18 | 124.6 | 0.565 | radial vel. | 486.8 | 1.54 | 4830 | [24] | ||
HIP 91258 b | 1.068 | 5.0505 | 0.057 | radial vel. | 145.0 | 0.95 | 5519 | [16] | ||
KELT-3b | 1.477 | 1.345 | 2.7033904 | 0.04122 | transit | 580 | 1.28 | 6306 | [25] | |
KELT-6b | 0.442 | 1.18 | 7.8455821 | 0.08 | transit | 720 | 1.13 | 6272 | [26] | |
Kepler-37b | 0.03146 | 0.029 | 13.3675 | transit | 220 | 0.8 | 5417 | [27] | ||
Kepler-37c | 0.03776 | 0.067 | 21.302 | transit | 220 | 0.8 | 5417 | [27] | ||
Kepler-37d | 0.03839 | 0.173 | 39.7922 | transit | 220 | 0.8 | 5417 | [27] | ||
Kepler-61b | 0.192 | 59.87756 | transit | 1103±16 | 0.64 | 4017 | [28] | |||
Kepler-62b | 0.03 | 0.117 | 5.714932 | 0.0553 | transit | 1200 | 0.69 | 4925 | [29] | |
Kepler-62c | 0.013 | 0.048 | 12.4417 | 0.0929 | transit | 1200 | 0.69 | 4925 | [29] | |
Kepler-62d | 0.044 | 0.174 | 18.16406 | 0.12 | transit | 1200 | 0.69 | 4925 | [29] | |
Kepler-62e | 0.113 | 0.144 | 122.3874 | 0.427 | transit | 1200 | 0.69 | 4925 | Potentially habitable exoplanet [29] | |
Kepler-62f | 0.11 | 0.126 | 267.291 | 0.718 | transit | 1200 | 0.69 | 4925 | Potentially habitable exoplanet [29] | |
Kepler-63b | 0.378 | 0.545 | 9.4341505 | 0.08 | transit | 650 | 0.98 | 5576 | [30] | |
Kepler-65b | 0.127 | 2.15491 | 0.035 | transit | 999±8 | 1.25 | 6211 | [31] | ||
Kepler-65c | 0.23 | 5.859944 | 0.068 | transit | 999±8 | 1.25 | 6211 | [31] | ||
Kepler-65d | 0.136 | 8.13123 | 0.084 | transit | 999±8 | 1.25 | 6211 | [31] | ||
Kepler-66b | 0.25 | 17.815815 | 0.1352 | transit | 3610 | 1.04 | 5962 | Belongs to open cluster NGC 6811 [32] | ||
Kepler-67b | 0.262 | 15.7259 | 0.1171 | transit | 3610 | 0.86 | 5331 | Belongs to open cluster NGC 6811 [32] | ||
Kepler-68b | 0.01878 | 0.208 | 5.39875 | 1280 | transit | 440 | 1.08 | 5793 | [33] | |
Kepler-68c | 0.02265 | 0.089 | 9.60504 | transit | 440 | 1.08 | 5793 | [33] | ||
Kepler-68d | 0.84007 | 625 | radial vel. | 440 | 1.08 | 5793 | [33] | |||
Kepler-69b | 0.2 | 13.722341 | 0.094 | transit | 2430±30 | 0.81 | 5638 | [34] | ||
Kepler-69c | 0.153 | 242.4613 | 0.64 | transit | 2430±30 | 0.81 | 5638 | [34] [35] | ||
Kepler-74b | 0.63 | 0.96 | 7.340711 | 0.0781 | transit | 4300 | 1.18 | 6000 | [36] | |
Kepler-75b | 10.1 | 1.05 | 8.8849116 | 0.0818 | transit | 3700 | 0.91 | 5200 | [36] | |
Kepler-76b | 2.01 | 1.36 | 1.5449298 | 0.0274 | orbital brightness modulation | 2750±30 | 1.2 | 6409 | [37] | |
Kepler-77b | 0.43 | 0.96 | 3.57878087 | 0.04501 | transit | 1900 | 0.95 | 5520 | [38] | |
Kepler-78b | 0.006 | 0.105 | 0.355 | 2330 | transit | 407.1±1.1 | 0.76 | 5058 | [39] | |
Kepler-87b | 1.02 | 1.204 | 114.73635 | 0.481 | 478 | transit | 4170±90 | 1.1 | 5600 | Two more unconfirmed planets in the system [39] |
Kepler-87c | 0.02 | 0.548 | 191.2318 | 0.676 | 403 | transit | 4170±90 | 1.1 | 5600 | Two more unconfirmed planets in the system [39] |
Kepler-88b | 0.027 | 0.337 | 10.95416 | transit | 1110 | 0.96 | 5471 | [40] | ||
Kepler-88c | 0.626 | 22.3395 | 0.15525 | timing | 1110 | 0.96 | 5471 | [40] [41] | ||
Kepler-89b | 0.033 | 0.153 | 3.743208 | 0.05119 | transit | 1577±16 | 1.28 | 6182 | [42] | |
Kepler-89c | 0.049 | 0.385 | 10.423648 | 0.1013 | transit | 1577±16 | 1.28 | 6182 | [42] | |
Kepler-89d | 0.334 | 1.005 | 22.342989 | 0.1684 | transit | 1577±16 | 1.28 | 6182 | [42] | |
Kepler-89e | 0.11 | 0.585 | 54.32031 | 0.3046 | transit | 1577±16 | 1.28 | 6182 | [42] | |
Kepler-90b | 0.117 | 7.008151 | 0.074 | 1056 | transit | 2500 | 1.2 | 6080 | [43] | |
Kepler-90c | 0.106 | 8.719375 | 0.089 | 981 | transit | 2500 | 1.2 | 6080 | [43] | |
Kepler-90d | 0.256 | 59.73667 | 0.32 | 518 | transit | 2500 | 1.2 | 6080 | [43] | |
Kepler-90e | 0.237 | 91.93913 | 0.42 | 448 | transit | 2500 | 1.2 | 6080 | [43] | |
Kepler-90f | 0.257 | 124.9144 | 0.48 | 592 | transit | 2500 | 1.2 | 6080 | [43] | |
Kepler-90g | 0.723 | 210.60697 | 0.71 | 340 | transit | 2500 | 1.2 | 6080 | [43] | |
Kepler-90h | 1.008 | 331.60059 | 1.01 | 292 | transit | 2500 | 1.2 | 6080 | [43] | |
Kepler-91b | 0.81 | 1.367 | 6.24658 | 0.0731 | transit | 3400 | 1.31 | 4550 | [44] | |
Kepler-92b | 0.202 | 0.313 | 13.749 | transit | 1580±17 | 1.21 | 5883 | [45] | ||
Kepler-92c | 0.019 | 0.232 | 26.723 | transit | 1580±17 | 1.21 | 5883 | [45] | ||
Kepler-102e | 0.028 | 0.198 | 16.1457 | 579 | transit | 352.7±0.7 | 0.81 | 4909 | [46] | |
Kepler-105b | 0.429 | 5.4122 | 0.066 | transit | 1517±18 | 0.96 | 5827 | [46] | ||
Kepler-114c | 0.009 | 0.143 | 8.041 | 623 | transit | 852±4 | 0.56 | 4605 | [45] | |
Kepler-114d | 0.012 | 0.226 | 11.776 | 549 | transit | 852±4 | 0.56 | 4605 | [45] | |
Kepler-128b | 0.097 | 0.101 | 15.09 | transit | 1307±12 | 1.18 | 6090 | [45] | ||
Kepler-128c | 0.105 | 0.101 | 22.804 | transit | 1307±12 | 1.18 | 6090 | [45] | ||
Kepler-130b | 0.091 | 8.457458 | 0.079 | transit | 1042±7 | 1 | 5884 | [46] | ||
Kepler-145b | 0.117 | 0.236 | 22.951 | transit | 1880±30 | 1.32 | 6022 | [45] | ||
Kepler-145c | 0.25 | 0.385 | 42.882 | transit | 1880±30 | 1.32 | 6022 | [45] | ||
Kepler-177b | 0.006 | 0.259 | 36.855 | transit | 4880±140 | 1.07 | 5942 | [45] | ||
Kepler-177c | 0.024 | 0.633 | 49.412 | transit | 4880±140 | 1.07 | 5942 | [45] | ||
Kepler-238e | 0.534 | 0.5 | 23.654 | transit | 6200±300 | 1.06 | 5751 | [45] | ||
Kepler-238f | 0.042 | 0.178 | 50.447 | transit | 6200±300 | 1.06 | 5751 | [45] | ||
Kepler-276c | 0.052 | 0.259 | 31.884 | transit | 3850±150 | 1.1 | 6105 | [45] | ||
Kepler-276d | 0.051 | 0.25 | 48.648 | transit | 3850±150 | 1.1 | 6105 | [45] | ||
Kepler-277b | 0.275 | 0.261 | 17.324 | transit | 3280±50 | 1.12 | 5946 | [45] | ||
Kepler-277c | 0.202 | 0.3 | 33.006 | transit | 3280±50 | 1.12 | 5946 | [45] | ||
Kepler-279b | 0.323 | 12.309681 | 0.112 | transit | 3480±70 | 1.1 | 6363 | KOI-1236.01 [47] | ||
Kepler-279c | 0.155 | 0.384 | 35.736 | transit | 3490±70 | 1.1 | 6363 | KOI-1236.02 [47] [45] | ||
Kepler-279d | 0.118 | 0.277 | 54.414 | transit | 3490±70 | 1.1 | 6363 | [45] | ||
Kepler-282d | 0.192 | 0.219 | 24.806 | transit | 4540±150 | 0.97 | 5602 | [45] | ||
Kepler-282e | 0.177 | 0.277 | 44.347 | transit | 4540±150 | 0.97 | 5602 | [45] | ||
Kepler-305b | 0.033 | 0.321 | 5.487 | transit | 2900±90 | 0.76 | 5100 | [45] KOI-1563.01 [47] | ||
Kepler-305c | 0.019 | 0.294 | 8.291 | transit | 2900±90 | 0.76 | 5100 | [45] KOI-1563.02 [47] | ||
Kepler-307b | 0.02341 | 0.217 | 10.4208 | transit | 1908±17 | 0.91 | 5367 | [45] | ||
Kepler-307c | 0.01145 | 0.196 | 13.0729 | transit | 1908±17 | 0.91 | 5367 | [45] | ||
Kepler-328b | 0.09 | 0.205 | 34.921 | transit | 7700±500 | 1.15 | 5914 | [45] | ||
Kepler-328c | 0.124 | 0.482 | 71.312 | transit | 7700±500 | 1.15 | 5914 | [45] | ||
Kepler-350c | 0.019 | 0.277 | 17.849 | transit | 3210±70 | 1 | 6186 | [45] | ||
Kepler-350d | 0.047 | 0.25 | 26.136 | transit | 3210±70 | 1 | 6186 | [45] | ||
Kepler-396b | 0.238 | 0.312 | 42.994 | transit | 734±5 | 0.85 | 5384 | [45] KOI-2672.01 [47] | ||
Kepler-396c | 0.056 | 0.473 | 88.505 | transit | 734±5 | 0.85 | 5384 | [45] KOI-2672.02 [47] | ||
Kepler-410Ab | 0.253 | 17.833648 | 0.1226 | transit | 430 | 1.21 | 6273 | [48] | ||
Kepler-411b | 0.168 | 3.00516 | 0.038 | 1040 | transit | 503.5±1.5 | 0.83 | 4974 | [46] | |
Kepler-1359c | 0.3711+0.12 −0.06 | 505.46+0.05 −0.04 | 1.143±0.018 | transit | 2182+81 −82 | 0.78+0.03 −0.04 | 4709+46 −56 | [43] Also called KIC 6436029 c, discovery retracted in 2015 after 3rd transit was proven to be false. [49] | ||
MOA-2008-BLG-379Lb | 4.1 | 3.3 | microlensing | 11000 | 0.56 | [50] | ||||
MOA-2010-BLG-328Lb | 0.02895 | 0.92 | microlensing | 2600 | 0.11 | [51] | ||||
MOA-2011-BLG-262Lb | 0.056634 | 0.383 | 1 | microlensing | 22830 | 0.1 | 3300 | Host star may be a rogue planet, planet may be an exomoon [52] | ||
MOA-2011-BLG-262L | 4 | N/A | microlensing | 22830 | 3300 | Host star may be a rogue planet, planet may be an exomoon [52] | ||||
MOA-2011-BLG-293Lb | 4.8 | 1.1 | microlensing | 25200 | 0.86 | [53] | ||||
MOA-2011-BLG-322Lb | 11.6 | 4.3 | microlensing | 24700 | 0.39 | [54] | ||||
OGLE-2011-BLG-0251Lb | 0.53 | 2.72 | microlensing | 8400 | 0.26 | [55] | ||||
OGLE-2012-BLG-358Lb | 1.85 | 0.87 | microlensing | 5700 | 0.02 | Orbiting a brown dwarf [56] | ||||
OGLE-2012-BLG-406Lb | 2.73 | 3.45 | microlensing | 16200 | 0.44 | [57] | ||||
Omega Serpentis b | 1.7 | 277.02 | 1.1 | radial vel. | 263.0 | 2.17 | 4770 | [15] | ||
PH2b | 0.903 | 282.5255 | 0.828 | 281 | transit | 1130±10 | 0.94 | 5629 | [58] Also called Kepler-86b | |
POTS-1b | 2.31 | 0.941 | 3.1606296 | 0.03734 | transit | 3900 | 0.69 | 4400 | [59] | |
PSO J318.5−22 | 6.5 | 1.53 | N/A | N/A | 1160 | imaging | 80 | N/A | N/A | Rogue planet [60] |
ROXs 12b | 16 | 210 | imaging | 390 | 0.87 | 3850 | [61] | |||
ROXs 42Bb | 9 | 157 | imaging | 440 | 1 | [61] | ||||
WASP-8c | 9.45 | 4323 | 5.28 | radial vel. | 280 | 1.03 | 5600 | [62] | ||
WASP-65b | 1.55 | 1.112 | 2.3114243 | 0.0334 | transit | 1000 | 0.93 | 5600 | [63] | |
WASP-68b | 0.95 | 1.24 | 5.084298 | 0.06206 | transit | 962±8 | 1.24 | 5911 | [64] | |
WASP-69b | 0.26 | 1.057 | 3.8681382 | 0.04525 | 963 | transit | 160 | 0.83 | 4715 | [65] |
WASP-70Ab | 0.59 | 1.164 | 3.7130203 | 0.04853 | 1387 | transit | 800 | 1.11 | 5763 | [65] |
WASP-73b | 1.88 | 1.16 | 4.08722 | 0.05512 | 1790 | transit | 1042±9 | 1.34 | 6036 | [64] |
WASP-75b | 1.07 | 1.27 | 2.484193 | 0.0375 | transit | 850 | 1.14 | 6100 | [63] [66] | |
WASP-76b | 0.92 | 1.83 | 1.809886 | 0.033 | 2190 | transit | 390 | 1.46 | 6250 | [67] |
WASP-80b | 0.538 | 0.999 | 3.06785234 | 0.0344 | transit | 200 | 0.58 | 4143 | [68] Proper name Wadirum | |
WASP-82b | 1.24 | 1.67 | 2.705782 | 0.0447 | 2190 | transit | 650 | 1.63 | 6490 | [67] |
WASP-84b | 0.694 | 0.942 | 8.5234865 | 0.0771 | 797 | transit | 410 | 0.84 | 5314 | [65] |
WASP-88b | 0.56 | 1.7 | 4.954 | 0.06431 | 1775 | transit | 1730±30 | 1.45 | 6431 | [64] |
WASP-90b | 0.63±0.07 | 1.63±0.09 | 3.916243±0.000003 | 0.0562±0.0012 | 1840±50 | transit | 1100±200 | 1.55±0.10 | 6440±130 | [67] |
WASP-95b | 1.13+0.1 −0.04 | 1.21±0.06 | 2.184673±0.0000014 | 0.03416±0.00083 | 1570±50 | transit | 450±2 | 1.11±0.09 | 5630±130 | [69] |
WASP-96b | 0.48±0.03 | 1.2±0.06 | 3.4252602±0.0000027 | 0.0453±0.0013 | 1285±40 | transit | 1161±15 | 1.06±0.09 | 5540±140 | [69] |
WASP-97b | 1.32±0.05 | 1.13±0.06 | 2.07276±0.000001 | 0.03303±0.00056 | 1555±40 | transit | 494.9±1.7 | 1.12±0.06 | 5640±100 | [69] |
WASP-98b | 0.83±0.07 | 1.10±0.04 | 2.96264036±0.0000013 | 0.03762±0.001 | 1180±30 | transit | 926±5 | 0.69±0.06 | 5525±130 | [69] |
WASP-99b | 2.78±0.13 | 1.10+0.08 −0.05 | 5.75251±0.00004 | 0.0717±0.0016 | 1480±40 | transit | 519±2 | 1.48±0.10 | 6180±100 | [69] |
WASP-100b | 2.03±0.12 | 1.69±0.29 | 2.849375±0.000008 | 0.0457±0.0010 | 2190±140 | transit | 1201±9 | 1.57±0.10 | 6900±120 | [69] |
WASP-101b | 0.50±0.04 | 1.41±0.05 | 3.585722±0.000004 | 0.0506±0.0009 | 1560±35 | transit | 660±3 | 1.34±0.07 | 6400±110 | [69] |
WTS-2b | 1.12 | 1.363 | 1.0187068 | 0.01855 | 2000 | transit | 3300 | 0.82 | 5000 | [70] [71] |
HAT-P-7 is a F-type main sequence star located about 1088 light-years away in the constellation Cygnus. The apparent magnitude of this star is 10.5, which means it is not visible to the naked eye but can be seen with a small telescope on a clear dark night.
Kepler-18 is a star with almost the same mass as the Sun in the Cygnus constellation.
HAT-P-17 is a K-type main-sequence star about 92.4 parsecs (301 ly) away. It has a mass of about 0.857 ± 0.039 M☉. It is the host of two planets, HAT-P-17b and HAT-P-17c, both discovered in 2010. A search for a binary companion star using adaptive optics at the MMT Observatory was negative. A candidate companion was detected by a spectroscopic search of high-resolution K band infrared spectra taken at the Keck observatory.
A Mini-Neptune is a planet less massive than Neptune but resembling Neptune in that it has a thick hydrogen-helium atmosphere, probably with deep layers of ice, rock or liquid oceans.
Kepler-80, also known as KOI-500, is a red dwarf star of the spectral type M0V. This stellar classification places Kepler-80 among the very common, cool, class M stars that are still within their main evolutionary stage, known as the main sequence. Kepler-80, like other red dwarf stars, is smaller than the Sun, and it has both radius, mass, temperatures, and luminosity lower than that of our own star. Kepler-80 is found approximately 1,223 light years from the Solar System, in the stellar constellation Cygnus, also known as the Swan.
Kepler-32 is an M-type main sequence star located about 1053 light years from Earth, in the constellation of Cygnus. Discovered in January 2012 by the Kepler spacecraft, it shows a 0.58 ± 0.05 solar mass (M☉), a 0.53 ± 0.04 solar radius (R☉), and temperature of 3900.0 K, making it half the mass and radius of the Sun, two-thirds its temperature and 5% its luminosity.
Kepler-65 is a subgiant star slightly more massive than the Sun and has at least four planets.
Kepler-88 is a G-type star 1,230 light-years away in the constellation of Lyra, with three confirmed exoplanets. SIMBAD lists a subgiant spectral type of G8IV, while other sources give it a main sequence spectral type of G6V. The latter is more consistent with its properties.
KOI-256 is a double star located in the constellation Cygnus approximately 575 light-years (176 pc) from Earth. While observations by the Kepler spacecraft suggested the system contained a gas giant exoplanet orbiting a red dwarf, later studies determined that KOI-256 was a binary system composed of the red dwarf orbiting a white dwarf.
HAT-P-19 is a K-type main-sequence star about 658 light-years away. The star is old yet metal enriched, having amount of heavy elements 250% of solar abundance. The survey in 2012 have failed to find any stellar companions to HAT-P-19.
HAT-P-16 is a F-type main-sequence star about 725 light-years away. The star has a concentration of heavy elements slightly higher than solar abundance, and low starspot activity. The survey in 2015 have failed to find any stellar companions to it. The spectral analysis in 2014 have discovered the HAT-P-16 has a carbon to oxygen molar ratio of 0.58±0.08, close to Sun`s value of 0.55.
HAT-P-15 is a G-type main-sequence star about 630 light-years away. The star is older than Sun yet has a concentration of heavy elements roughly 190% of solar abundance. The star has no noticeable starspot activity.
{{cite journal}}
: CS1 maint: multiple names: authors list (link)