SUNSET: 
0Use these up-to-date tables to learn about the moons of the solar system, including the plethora of Jupiter’s moons and the weird menagerie of Saturn’s moons.
NASA / JPL / Space Science Institute
Discovering a new moon in the solar system used to be a rare event. After Gerard Kuiper found Miranda, a moon of Uranus, in 1948 and Seth Nicholson found Ananke, a moon of Jupiter, in 1951, the total count of natural planetary satellites stood at 31: Jupiter's moons numbered 12, followed by the moons of Saturn (9), Uranus (5), Neptune (2), Mars (2), and Earth (1). (Notably, Mercury and Venus are the only planets in the solar system that do not have moons.)
In the ensuing three decades, finding solar system moons largely fell to NASA spacecraft. After Voyager 2's flyby of Neptune in 1989, the total number of solar system moons had nearly doubled to 60. However, the advent of sensitive electronic cameras has put ground-based observers back in the driver's seat, resulting in several dozens of finds over the past few years.
Indeed, some of the new objects are so small, only a few kilometers across, that they stretch the traditional notion of what constitutes a "moon." Sometimes faint objects appear fleetingly in images and are never seen again; others require patient follow-up observations over months or years to confirm that they orbit a planet.
While comets bear the surname(s) of their discoverer(s), and observers retain naming rights for asteroids, those who spot planetary moons must yield naming privilege to the International Astronomical Union. By convention, the IAU does not name a satellite until its orbit is known precisely — a threshold sometimes not reached until decades after the initial discovery.
NASA / ESA
The following tables contains all the known moons of the solar system, including the dozens of moons of Jupiter, Saturn, Uranus, and Neptune, last updated in October 2019. As of then, the count stood at 214, distributed as follows: Earth 1, Mars 2, Jupiter 79, Saturn 82, Uranus 27, Neptune 14. Among the IAU-approved dwarf planets, Pluto has 5, Eris 1, Makemake 1, and Haumea 2. However, the locations of seven Jovian and seven Saturnian moonlets are known so poorly that they are effectively lost.
In the table below, the diameter of each satellite and the orbital distance from its planet's center (semimajor axis) are in kilometers; eccentricity is the elongation of the satellite's orbit; and inclination is the tilt of its orbit plane, in degrees, with respect to the planet's equatorial plane (for inner moons) or the ecliptic plane (for outer moons). Names of "lost" objects are shown in italics.
Moons of Earth and Mars
Planet/ Satellite | Diameter (km) | Visual magnitude | Distance (km) | Orbital period (days) | Eccen- tricity | Inclina- tion (°) |
| EARTH | ||||||
| Moon | 3,474 | –12.7 | 384,400 | 27.3 | 0.055 | 5.1 |
| MARS | ||||||
| Phobos | 22 | 11.4 | 9,380 | 0.3 | 0.015 | 1.1 |
| Deimos | 12 | 12.5 | 23,460 | 1.3 | 0.000 | 1.8 |
Moons of Jupiter
Satellite | Diameter (km) | Visual magnitude | Distance (km) | Orbital period (days) | Eccen- tricity | Inclina- tion (°) |
| Metis | 44 | 17.5 | 128,000 | 0.3 | 0.001 | 0.0 |
| Adrastea | 16 | 18.7 | 129,000 | 0.3 | 0.002 | 0.1 |
| Amalthea | 168 | 14.1 | 181,400 | 0.5 | 0.003 | 0.4 |
| Thebe | 98 | 16.0 | 221,900 | 0.7 | 0.018 | 1.1 |
| Io | 3,643 | 5.0 | 421,800 | 1.8 | 0.004 | 0.0 |
| Europa | 3,122 | 5.3 | 671,100 | 3.6 | 0.009 | 0.5 |
| Ganymede | 5,262 | 4.6 | 1,070,400 | 7.2 | 0.001 | 0.2 |
| Callisto | 4,821 | 5.7 | 1,882,700 | 16.7 | 0.007 | 0.2 |
| Themisto | 9 | 21.0 | 7,507,000 | 130.0 | 0.242 | 43.1 |
| Leda | 18 | 20.2 | 11,165,000 | 240.9 | 0.164 | 27.5 |
| Himalia | 160 | 14.8 | 11,461,000 | 250.6 | 0.162 | 27.5 |
| Ersa | 3 | 22.9 | 11,483,000 | 252.0 | 0.094 | 30.6 |
| Pandia | 3 | 23.0 | 11,525,000 | 252.1 | 0.180 | 28.2 |
| Lysithea | 38 | 18.2 | 11,717,000 | 259.2 | 0.112 | 27.7 |
| Elara | 78 | 16.6 | 11,741,000 | 259.6 | 0.217 | 26.6 |
| Dia | 4 | 22.4 | 12,118,000 | 287.0 | 0.211 | 28.2 |
| Carpo | 3 | 23.0 | 16,989,000 | 456.1 | 0.430 | 51.4 |
| Valetudo | 1 | 24.0 | 18,980,000 | 533.3 | 0.222 | 34.0 |
| S/2003 J12 | 1 | 23.9 | 19,002,500 | 433.3 | 0.376 | 145.8 |
| Euporie | 2 | 23.1 | 19,302,000 | 550.7 | 0.144 | 145.6 |
| Eupheme | 2 | 23.4 | 20,221,000 | 583.9 | 0.197 | 147.6 |
| S/2003 J18 | 2 | 23.4 | 20,274,000 | 588.0 | 0.105 | 146.4 |
| S/2010 J2 | 1 | 23.9 | 20,307,150 | 588.1 | 0.307 | 150.4 |
| S/2017 J7 | 2 | 23.6 | 20,627,000 | 602.6 | 0.215 | 143.4 |
| S/2016 J1 | 1 | 24.0 | 20,650,850 | 602.7 | 0.141 | 139.8 |
| S/2017 J3 | 2 | 23.4 | 20,694,000 | 606.3 | 0.148 | 147.9 |
| Orthosie | 2 | 23.1 | 20,721,000 | 622.6 | 0.281 | 145.9 |
| Ananke | 28 | 18.9 | 20,741,000 | 610.0 | 0.244 | 148.9 |
| Euanthe | 3 | 22.8 | 20,799,000 | 620.6 | 0.232 | 148.9 |
| Thyone | 4 | 22.3 | 20,940,000 | 627.3 | 0.229 | 148.5 |
| S/2003 J16 | 2 | 23.3 | 21,000,000 | 595.4 | 0.230 | 148.5 |
| Mneme | 2 | 23.3 | 21,069,000 | 620.0 | 0.227 | 148.6 |
| Harpalyke | 4 | 22.2 | 21,105,000 | 623.3 | 0.226 | 148.6 |
| Hermippe | 4 | 22.1 | 21,131,000 | 633.9 | 0.210 | 150.7 |
| Praxidike | 7 | 21.2 | 21,147,000 | 625.3 | 0.230 | 149.0 |
| Thelxinoe | 2 | 23.5 | 21,162,000 | 628.1 | 0.221 | 151.4 |
| Helike | 4 | 22.6 | 21,263,000 | 634.8 | 0.156 | 154.8 |
| Iocaste | 5 | 21.8 | 21,269,000 | 631.5 | 0.216 | 149.4 |
| S/2017 J9 | 3 | 22.8 | 21,487,000 | 639.2 | 0.229 | 152.7 |
| Kale | 2 | 23.0 | 22,407,000 | 686.7 | 0.260 | 165.0 |
| S/2003 J9 | 1 | 23.7 | 22,441,700 | 683.0 | 0.269 | 164.5 |
| S/2017 J6 | 2 | 23.5 | 22,455,000 | 683.0 | 0.557 | 155.2 |
| S/2011 J1 | 2 | 23.7 | 22,462,000 | 686.6 | 0.233 | 163.3 |
| S/2003 J19 | 2 | 23.7 | 22,757,000 | 697.6 | 0.257 | 166.7 |
| Philophrosyne | 2 | 23.5 | 22,820,000 | 701.3 | 0.194 | 143.6 |
| Eurydome | 3 | 22.7 | 22,865,000 | 717.3 | 0.276 | 150.3 |
| Arche | 3 | 22.8 | 22,931,000 | 723.9 | 0.259 | 165.0 |
| Autonoe | 4 | 22.0 | 23,039,000 | 762.7 | 0.334 | 152.9 |
| Pasithee | 2 | 23.2 | 23,096,000 | 719.5 | 0.267 | 165.1 |
| Herse | 2 | 23.4 | 23,097,000 | 715.4 | 0.200 | 164.2 |
| Chaldene | 4 | 22.5 | 23,179,000 | 723.8 | 0.251 | 165.2 |
| Isonoe | 4 | 22.5 | 23,217,000 | 725.5 | 0.246 | 165.2 |
| Aitne | 3 | 22.7 | 23,231,000 | 730.2 | 0.264 | 165.1 |
| S/2017 J5 | 2 | 23.5 | 23,232,000 | 719.5 | 0.284 | 164.3 |
| S/2017 J8 | 1 | 24 | 23,232,700 | 719.6 | 0.312 | 164.7 |
| S/2003 J4 | 2 | 23.0 | 23,257,900 | 723.2 | 0.204 | 144.9 |
| Erinome | 3 | 22.8 | 23,279,000 | 728.3 | 0.266 | 164.9 |
| S/2017 J2 | 2 | 23.5 | 23,303,000 | 723.1 | 0.236 | 166.4 |
| S/2010 J1 | 2 | 23.3 | 23,314,300 | 723.2 | 0.320 | 163.2 |
| Taygete | 5 | 21.9 | 23,360,000 | 732.2 | 0.252 | 165.2 |
| S/2011 J2 | 1 | 23.6 | 23,463,900 | 730.5 | 0.332 | 153.6 |
| Sponde | 2 | 23.0 | 23,487,000 | 748.3 | 0.312 | 151.0 |
| S/2017 J1 | 2 | 23.8 | 23,547,100 | 734.2 | 0.397 | 149.2 |
| Kalyke | 5 | 21.8 | 23,583,000 | 743.0 | 0.245 | 165.2 |
| Pasiphae | 58 | 16.9 | 23,624,000 | 708.0 | 0.409 | 151.4 |
| Eukelade | 4 | 22.6 | 23,661,000 | 746.4 | 0.272 | 165.5 |
| Eirene | 4 | 22.5 | 23,731,800 | 759.7 | 0.220 | 163.1 |
| Megaclite | 6 | 21.7 | 23,806,000 | 752.8 | 0.421 | 152.8 |
| Carme | 46 | 17.9 | 23,926,000 | 756.1 | 0.253 | 164.9 |
| Sinope | 38 | 18.3 | 23,939,000 | 724.5 | 0.250 | 158.1 |
| Hegemone | 3 | 22.8 | 23,947,000 | 739.6 | 0.328 | 155.2 |
| Aoede | 4 | 22.5 | 23,981,000 | 761.5 | 0.432 | 158.3 |
| Kallichore | 2 | 23.7 | 24,043,000 | 764.7 | 0.264 | 165.5 |
| S/2003 J23 | 2 | 23.6 | 24,055,500 | 759.7 | 0.309 | 149.2 |
| Callirrhoe | 7 | 20.8 | 24,102,000 | 758.8 | 0.283 | 147.1 |
| S/2003 J10 | 2 | 23.6 | 24,249,600 | 767.0 | 0.214 | 164.1 |
| Cyllene | 2 | 23.2 | 24,349,000 | 737.8 | 0.319 | 149.3 |
| Kore | 2 | 23.6 | 24,543,000 | 779.2 | 0.325 | 145.0 |
| S/2003 J2 | 2 | 23.2 | 28,570,000 | 982.5 | 0.380 | 151.8 |
Moons of Saturn
Satellite | Diameter (km) | Visual magnitude | Distance (km) | Orbital period (days) | Eccen- tricity | Inclina- tion (°) |
| S/2009 S1 | 0.3 | 28.0 | 117,000 | 0.6 | 0.000 | 0.0 |
| Pan | 28 | 19.4 | 133,580 | 0.6 | 0.000 | 0.0 |
| Daphnis | 7 | 24.0 | 136,500 | 0.6 | 0.003 | 0.0 |
| Atlas | 32 | 18.5 | 137,770 | 0.6 | 0.001 | 0.0 |
| Prometheus | 86 | 15.8 | 139,430 | 0.6 | 0.002 | 0.0 |
| Pandora | 81 | 16.4 | 141,810 | 0.6 | 0.004 | 0.1 |
| Janus | 178 | 14.4 | 151,450 | 0.7 | 0.010 | 0.2 |
| Epimetheus | 113 | 15.6 | 151,450 | 0.7 | 0.016 | 0.4 |
| Aegaeon | 0.5 | 25 | 167,420 | 0.8 | 0.000 | 0.0 |
| Mimas | 397 | 12.8 | 185,540 | 0.9 | 0.020 | 1.6 |
| Methone | 3 | 23 | 194,400 | 1.0 | 0.000 | 0.0 |
| Anthe | 2 | 24.0 | 196,900 | 1.0 | 0.001 | 0.2 |
| Pallene | 4 | 23 | 212,280 | 1.2 | 0.004 | 0.0 |
| Enceladus | 499 | 11.8 | 238,040 | 1.4 | 0.000 | 0.0 |
| Tethys | 1,060 | 10.2 | 294,670 | 1.9 | 0.000 | 1.1 |
| Telesto | 25 | 18.5 | 294,720 | 1.9 | 0.000 | 1.2 |
| Calypso | 21 | 18.7 | 294,720 | 1.9 | 0.001 | 1.5 |
| Polydeuces | 4 | 23.0 | 377,200 | 2.7 | 0.019 | 0.2 |
| Dione | 1,118 | 10.4 | 377,420 | 2.7 | 0.002 | 0.0 |
| Helene | 31 | 18.4 | 377,440 | 2.7 | 0.000 | 0.2 |
| Rhea | 1,528 | 9.6 | 527,070 | 4.5 | 0.000 | 0.3 |
| Titan | 5,150 | 8.4 | 1,221,860 | 16.0 | 0.029 | 0.3 |
| Hyperion | 283 | 14.4 | 1,500,930 | 21.3 | 0.023 | 0.6 |
| Iapetus | 1,436 | 11.0 | 3,560,850 | 79.3 | 0.029 | 8.3 |
| Kiviuq | 14 | 22.0 | 11,384,000 | 449.2 | 0.332 | 46.7 |
| Ijiraq | 10 | 22.6 | 11,408,000 | 451.4 | 0.272 | 47.5 |
| Phoebe | 220 | 16.4 | 12,947,920 | 548.0 | 0.163 | 175.2 |
| Paaliaq | 19 | 21.3 | 15,204,000 | 687.0 | 0.332 | 46.2 |
| Skathi | 6 | 23.6 | 15,635,000 | 728.1 | 0.272 | 152.6 |
| S/2004 S37 | 4 | 25.1 | 16,003,300 | 752.9 | 0.506 | 164.0 |
| S/2007 S2 | 6 | 24.4 | 16,055,000 | 759.7 | 0.237 | 176.7 |
| Albiorix | 26 | 20.5 | 16,393,000 | 783.5 | 0.480 | 34.1 |
| Bebhionn | 6 | 24.1 | 17,116,000 | 834.9 | 0.468 | 35.1 |
| S/2004 S31 | 4 | 24.9 | 17,402,800 | 853.8 | 0.242 | 48.1 |
| S/2004 S29 | 4 | 24.9 | 17,470,700 | 858.8 | 0.472 | 44.4 |
| Erriapus | 9 | 23.0 | 17,602,000 | 871.1 | 0.472 | 34.5 |
| Skoll | 6 | 24.5 | 17,668,000 | 878.2 | 0.464 | 161.0 |
| Tarqeq | 7 | 23.9 | 17,962,000 | 885.2 | 0.168 | 46.3 |
| Siarnaq | 32 | 20.1 | 18,182,000 | 895.5 | 0.280 | 45.8 |
| Tarvos | 13 | 22.1 | 18,243,000 | 926.4 | 0.538 | 33.7 |
| S/2004 S13 | 6 | 24.5 | 18,406,000 | 933.5 | 0.259 | 168.8 |
| Hyrrokkin | 8 | 23.5 | 18,440,000 | 931.9 | 0.336 | 151.5 |
| Greip | 6 | 24.4 | 18,457,000 | 937.1 | 0.315 | 174.8 |
| Mundilfari | 6 | 23.8 | 18,653,000 | 952.8 | 0.210 | 167.4 |
| S/2006 S1 | 6 | 24.6 | 18,780,000 | 962.2 | 0.141 | 156.2 |
| S/2007 S3 | 5 | 24.9 | 18,938,000 | 977.8 | 0.185 | 177.6 |
| S/2004 S20 | 4 | 25.0 | 19,211,000 | 990.2 | 0.204 | 163.1 |
| Bergelmir | 6 | 24.2 | 19,336,300 | 1,005.8 | 0.142 | 158.6 |
| Narvi | 8 | 24.0 | 19,349,000 | 1,003.9 | 0.430 | 145.7 |
| Jarnsaxa | 6 | 24.7 | 19,354,000 | 1,006.9 | 0.218 | 163.6 |
| S/2004 S17 | 4 | 25.2 | 19,448,000 | 1,014.6 | 0.180 | 168.2 |
| Suttungr | 6 | 23.9 | 19,468,000 | 1,016.7 | 0.114 | 175.8 |
| S/2004 S27 | 4 | 24.5 | 19,776,700 | 1,033.0 | 0.120 | 167.1 |
| Hati | 6 | 24.4 | 19,868,000 | 1,040.2 | 0.371 | 165.8 |
| S/2004 S12 | 5 | 24.8 | 19,886,000 | 1,046.1 | 0.327 | 165.3 |
| Bestla | 7 | 23.8 | 20,209,000 | 1,088.0 | 0.514 | 145.1 |
| S/2004 S22 | 3 | 25.3 | 20,379,900 | 1,080.4 | 0.257 | 177.4 |
| Farbauti | 5 | 24.7 | 20,390,000 | 1,086.7 | 0.241 | 156.5 |
| Thrymr | 6 | 23.9 | 20,418,000 | 1,092.0 | 0.466 | 177.7 |
| S/2004 S30 | 3 | 25.4 | 20,424,000 | 1,084.1 | 0.113 | 156.3 |
| S/2004 S25 | 3 | 25.2 | 20,544,500 | 1,095.0 | 0.457 | 173.3 |
| Aegir | 6 | 24.4 | 20,751,000 | 1,117.8 | 0.252 | 166.7 |
| S/2004 S7 | 6 | 24.5 | 21,000,000 | 1,140.2 | 0.529 | 165.7 |
| S/2006 S3 | 6 | 24.6 | 21,308,400 | 1,161.5 | 0.379 | 158.6 |
| S/2004 S23 | 4 | 24.8 | 21,427,000 | 1,164.3 | 0.399 | 177.7 |
| S/2004 S32 | 4 | 25.0 | 21,564,200 | 1,175.3 | 0.262 | 158.5 |
| S/2004 S28 | 4 | 24.9 | 21,791,300 | 1,197.2 | 0.133 | 171.0 |
| S/2004 S35 | 4 | 24.6 | 21,953,200 | 1,208.1 | 0.182 | 176.4 |
| Kari | 7 | 23.9 | 22,093,000 | 1,231.2 | 0.470 | 152.8 |
| Fenrir | 4 | 25.0 | 22,454,000 | 1,260.4 | 0.135 | 165.0 |
| S/2004 S39 | 2 | 25.5 | 22,790,400 | 1,277.5 | 0.081 | 167.6 |
| Surtur | 6 | 24.8 | 22,941,000 | 1,297.1 | 0.446 | 170.0 |
| S/2004 S38 | 4 | 25.1 | 23,006,200 | 1,295.8 | 0.381 | 155.0 |
| Loge | 6 | 24.6 | 23,059,000 | 1,311.4 | 0.187 | 167.7 |
| Ymir | 16 | 21.7 | 23,128,000 | 1,315.1 | 0.334 | 173.5 |
| S/2004 S24 | 3 | 25.2 | 23,231,300 | 1,317.6 | 0.049 | 36.8 |
| S/2004 S36 | 3 | 25.3 | 23,698,700 | 1,354.2 | 0.667 | 147.6 |
| S/2004 S33 | 4 | 25.0 | 23,764,800 | 1,361.5 | 0.417 | 161.5 |
| S/2004 S21 | 3 | 25.4 | 23,810,400 | 1,365.1 | 0.312 | 154.6 |
| S/2004 S34 | 3 | 25.3 | 24,358,900 | 1,412.5 | 0.267 | 165.7 |
| Fornjot | 6 | 24.6 | 25,146,000 | 1,494.1 | 0.208 | 170.4 |
| S/2004 S26 | 4 | 25.0 | 26,737,800 | 1,624.2 | 0.148 | 171.3 |
Moons of Uranus
Satellite | Diameter (km) | Visual magnitude | Distance (km) | Orbital period (days) | Eccen- tricity | Inclina- tion (°) |
| Cordelia | 40 | 23.6 | 49,800 | 0.3 | 0.000 | 0.1 |
| Ophelia | 23 | 23.3 | 53,800 | 0.4 | 0.010 | 0.1 |
| Bianca | 51 | 22.5 | 59,200 | 0.4 | 0.001 | 0.2 |
| Cressida | 80 | 21.6 | 61,800 | 0.5 | 0.000 | 0.0 |
| Desdemona | 64 | 22.0 | 62,700 | 0.5 | 0.000 | 0.1 |
| Juliet | 94 | 21.1 | 64,400 | 0.5 | 0.001 | 0.1 |
| Portia | 135 | 20.4 | 66,100 | 0.5 | 0.000 | 0.1 |
| Rosalind | 72 | 21.8 | 69,900 | 0.6 | 0.000 | 0.3 |
| Cupid | 10 | 26 | 74,390 | 0.6 | 0.001 | 0.1 |
| Belinda | 81 | 21.5 | 75,300 | 0.6 | 0.000 | 0.0 |
| Perdita | 40 | 23.6 | 76,420 | 0.6 | 0.000 | 0.5 |
| Puck | 162 | 19.8 | 86,000 | 0.8 | 0.000 | 0.3 |
| Mab | 10 | 26 | 97,740 | 0.9 | 0 | 0.1 |
| Miranda | 472 | 15.8 | 129,900 | 1.4 | 0.001 | 4.3 |
| Ariel | 1,158 | 13.7 | 190,900 | 2.5 | 0.001 | 0.0 |
| Umbriel | 1,169 | 14.5 | 266,000 | 4.1 | 0.004 | 0.1 |
| Titania | 1,578 | 13.5 | 436,300 | 8.7 | 0.001 | 0.1 |
| Oberon | 1,523 | 13.7 | 583,500 | 13.5 | 0.001 | 0.1 |
| Francisco | 12 | 25 | 4,282,900 | 267.1 | 0.132 | 147.2 |
| Caliban | 89 | 22.4 | 7,231,100 | 579.7 | 0.181 | 140.9 |
| Stephano | 20 | 24.1 | 8,007,400 | 677.5 | 0.225 | 143.8 |
| Trinculo | 10 | 25.4 | 8,505,200 | 749.4 | 0.219 | 167.0 |
| Sycorax | 190 | 20.8 | 12,179,400 | 1,288.4 | 0.522 | 159.4 |
| Margaret | 11 | 25.2 | 14,146,700 | 1,661.0 | 0.677 | 57.4 |
| Prospero | 30 | 20.8 | 16,267,800 | 1,978.4 | 0.444 | 151.2 |
| Setebos | 30 | 23.3 | 17,420,400 | 2,225.1 | 0.591 | 158.2 |
| Ferdinand | 12 | 25.1 | 20,430,000 | 2,790.0 | 0.399 | 169.8 |
Moons of Neptune
Satellite | Diameter (km) | Visual magnitude | Distance (km) | Orbital period (days) | Eccen- tricity | Inclina- tion (°) |
| Naiad | 58 | 24.6 | 48,230 | 0.3 | 0.000 | 4.7 |
| Thalassa | 80 | 23.9 | 50,070 | 0.3 | 0.000 | 0.1 |
| Despina | 148 | 22.5 | 52,530 | 0.3 | 0.000 | 0.1 |
| Galatea | 158 | 22.4 | 61,950 | 0.4 | 0.001 | 0.0 |
| Larissa | 192 | 22.0 | 73,550 | 0.6 | 0.001 | 0.2 |
| Hippocamp | 34 | 26.5 | 105,300 | 0.9 | 0.000 | 0.0 |
| Proteus | 416 | 20.3 | 117,650 | 1.1 | 0.001 | 0.1 |
| Triton | 2,707 | 13.5 | 354,760 | 5.9 | 0.000 | 156.9 |
| Nereid | 340 | 19.7 | 5,513,820 | 360.1 | 0.751 | 7.1 |
| Halimede | 54 | 24.2 | 16,611,000 | 1,879.1 | 0.265 | 112.7 |
| Sao | 31 | 25.4 | 22,228,000 | 2,912.7 | 0.137 | 53.5 |
| Laomedeia | 37 | 25 | 23,567,000 | 3,171.3 | 0.400 | 37.9 |
| Psamathe | 36 | 25.1 | 48,096,000 | 9,074.3 | 0.380 | 126.3 |
| Neso | 43 | 24.7 | 49,285,000 | 9,740.7 | 0.571 | 136.4 |
Moons of Pluto
Satellite | Diameter (km) | Visual magnitude | Distance (km) | Orbital period (days) | Eccen- tricity | Inclina- tion (°) |
| Charon | 1,186 | 17.3 | 17,536 | 6.4 | 0.002 | 96.1 |
| Styx | 10 | 27 | 42,000 | 20.2 | 0.000 | 96.2 |
| Nix | 100 | 23.4 | 48,708 | 24.9 | 0.003 | 96.2 |
| Kerberos | 20 | 26 | 59000 | 32.1 | 0.000 | 96.2 |
| Hydra | 150 | 23 | 64,749 | 38.2 | 0.005 | 96.4 |
Moons of Other Kuiper Belt Objects
Object/ Satellite | Diameter (km) | Visual magnitude | Distance (km) | Orbital period (days) | Eccen- tricity | Inclina- tion (°) |
| ERIS | ||||||
| Dysnomia | 200 | 23 | 37,350 | 15.8 | 0.007 | 142 |
| MAKEMAKE | ||||||
| S/2015 (136472) 1 | 175 | 25.2 | >21,000 | >12 | — | — |
| HAUMEA | ||||||
| Namaka | 170 | 21.9 | 25,660 | 18.3 | 0.249 | 113.0 |
| Hi'iaka | 310 | 20.6 | 49,880 | 49.5 | 0.051 | 126.4 |
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