List of natural satellites

This article is about the moons of planets and dwarf planets in the Solar System. For other asteroid or minor-planet moons, see Minor-planet moon.

Of the Solar System's eight planets and its eight most likely dwarf planets, six planets and six dwarf planets are known to be orbited by at least 299 natural satellites, or moons. At least 19 of them are large enough to be gravitationally rounded; of these, all are covered by a crust of ice except for Earth's Moon and Jupiter's Io. ^[1] Several of the largest ones are in hydrostatic equilibrium and would therefore be considered dwarf planets or planets if they were in direct orbit around the Sun and not in their current states (orbiting planets or dwarf planets).

Moons are classed into two separate categories according to their orbits: regular moons, which have prograde orbits (they orbit in the direction of their planets' rotation) and lie close to the plane of their equators, and irregular moons, whose orbits can be pro- or retrograde (against the direction of their planets' rotation) and often lie at extreme angles to their planets' equators. Irregular moons are probably minor planets that have been captured from surrounding space. Most irregular moons are less than 10 kilometres (6.2 mi) in diameter.

The earliest published discovery of a moon other than Earth's was by Galileo Galilei, who discovered the four Galilean moons orbiting Jupiter in 1610. Over the following three centuries, only a few more moons were discovered. Missions to other planets in the 1970s, most notably the Voyager 1 and 2 missions, saw a surge in the number of moons detected, and observations since the year 2000, using mostly large, ground-based optical telescopes, have discovered many more, all of which are irregular.

Moons by primary

Some moons, minor planets and comets of the Solar System to scale (major planets not to scale)

Selected moons, with Earth to scale. Nineteen moons are large enough to be round, and two, Titan and Triton, have substantial atmospheres

The number of moons discovered in each year until November 2019

Mercury, the smallest and innermost planet, has no moons, or at least none that can be detected to a diameter of 1.6 km (1.0 mi). ^[2] For a very short time in 1974, Mercury was thought to have a moon.

Venus also has no moons, ^[3] though reports of a moon around Venus have circulated since the 17th century.

Earth has one Moon, the largest moon of any rocky planet in the Solar System. Earth also has more than 20 known co-orbitals, including the asteroids 3753 Cruithne and 469219 Kamoʻoalewa, and the occasional temporary satellite, like 2020 CD₃; however, since they do not permanently orbit Earth, they are not considered moons. (See Other moons of Earth and Quasi-satellite.)

Mars has two known moons, Phobos and Deimos ("fear" and "dread", after attendants of Ares, the Greek god of war, equivalent to the Roman Mars). Searches for more satellites have been unsuccessful, putting the maximum radius of any other satellites at 90 m (100 yd). ^[4]

Jupiter has 95 moons with known orbits; 72 of them have received permanent designations, and 57 have been named. Its eight regular moons are grouped into the planet-sized Galilean moons and the far smaller Amalthea group. They were named after lovers of Zeus, the Greek equivalent of Jupiter. Among them is Ganymede, the largest and most massive moon in the Solar System. Its 87 known irregular moons are organized into two categories: prograde and retrograde. The prograde satellites consist of the Himalia group and three others in groups of one. The retrograde moons are grouped into the Carme, Ananke and Pasiphae groups.

Saturn has 146 moons with known orbits; 66 of them have received permanent designations, and 63 have been named. Most of them are quite small. Seven moons are large enough to be in hydrostatic equilibrium, including Titan, the second largest moon in the Solar System. Including these large moons, 24 of Saturn's moons are regular, and traditionally named after Titans or other figures associated with the mythological Saturn. The remaining 122 are irregular, and classified by their orbital characteristics into Inuit, Norse, and Gallic groups, and their names are chosen from the corresponding mythologies the groups are named after. The rings of Saturn are made up of icy objects ranging in size from one centimetre to hundreds of metres, each of which is on its own orbit about the planet. Thus, a precise number of Saturnian moons cannot be given, as there is no objective boundary between the countless small anonymous objects that form Saturn's ring system and the larger objects that have been named as moons. At least 150 "moonlets" embedded in the rings have been detected by the disturbance they create in the surrounding ring material, though this is thought to be only a small sample of the total population of such objects.

Uranus has 28 known moons, five of which are massive enough to have achieved hydrostatic equilibrium. There are 13 moons that orbit within Uranus's ring system, and another ten outer irregular moons. Unlike most planetary moons, which are named from antiquity, all the moons of Uranus are named after characters from the works of Shakespeare and Alexander Pope's work The Rape of the Lock .

Neptune has 16 known moons; the largest, Triton, accounts for more than 99.5 percent of all the mass orbiting the planet. Triton is large enough to have achieved hydrostatic equilibrium, but, uniquely for a large moon, has a retrograde orbit, suggesting it was a dwarf planet that was captured. Neptune also has seven known inner regular satellites, and eight outer irregular satellites.

Pluto, a dwarf planet, has five moons. Its largest moon Charon, named after the ferryman who took souls across the River Styx, is more than half as large as Pluto itself, and large enough to orbit a point outside Pluto's surface. In effect, each orbits the other, forming a binary system informally referred to as a double-dwarf-planet. Pluto's four other moons, Nix, Hydra, Kerberos and Styx are far smaller and orbit the Pluto–Charon system. ^[5]

Among the other dwarf planets, Ceres has no known moons. It is 90 percent certain that Ceres has no moons larger than 1 km in size, assuming that they would have the same albedo as Ceres itself. ^[6] Eris has one large known moon, Dysnomia. Accurately determining its size is difficult: one indicative estimate of its radius is 350±57.5 km. ^[7]

Two objects were named as dwarf planets, under the expectation that they would prove to be so (though this remains uncertain). Haumea has two moons, Hiʻiaka and Namaka, of radii ~195 and ~100 km, respectively. ^[8] Makemake has one moon, discovered in April 2016.

A number of other objects in the Kuiper belt and scattered disk may turn out to be dwarf planets. Quaoar, Gonggong, and Sedna are generally agreed to be dwarf planets among astronomers, and all but Sedna are known to have moons. ^[9] A number of other smaller objects, such as Huya, Salacia, Orcus, 2002 UX25 , Varda, and 2013 FY27 , also have moons, although their dwarf planethood is more doubtful. This list includes all objects with a best estimated diameter above 400 km that are considered likely or official dwarf planets by other sources and astronomers, ^{[10] [11] [12]} including 2003 AZ84 whose satellite has not been seen since its initial discovery.

As of October 2022 ^[update] , 365 asteroid moons and 128 trans-Neptunian moons (including those of Pluto and the other dwarf planets) had been discovered. ^[13]

Summary – number of moons

Planets	Mercury	Venus	Earth	Mars	Jupiter	Saturn	Uranus	Neptune
Number of moons	0	0	1	2	95	146	28	16

Consensus dwarf planets	Ceres	Pluto	Haumea	Quaoar	Makemake	Gonggong	Eris	Sedna
Number of moons	0	5	2	1	1	1	1	0

Minor planet
See list

Due to Earth's varying distance from these planets (as well as their distance to the Sun), the limits at which we are able to detect new moons are very inconsistent. As the below graph demonstrates, the maximum absolute magnitude (total inherent brightness, abbreviated H) of moons we have detected around planets occurs at H = 18 for Jupiter, H = 17 for Saturn, H = 14 for Uranus, and H = 12 for Neptune. Smaller moons may (and most likely do) exist around each of these planets, but are currently undetectable from Earth. Although spacecraft have visited all of these planets, Earth-based telescopes continue to outperform them in moon-detection ability due to their greater availability for wide-field surveys.^{[ citation needed ]}

Planetary moons by absolute magnitude

List

This is a list of the recognized moons of the planets and of the largest potential dwarf planets of the Solar System, ordered by their official Roman numeral designations. Moons that do not yet have official Roman numeral designations (because their orbits are not yet known well enough) are listed after those that do.

The 19 moons that are known to be large enough to have been rounded by their own gravity are listed in bold. The seven largest moons, which are larger than any of the known dwarf planets, are listed in bold and italic. Sidereal period differs from semi-major axis because a moon's speed depends both on the mass of its primary and its distance from it.

Satellites of planets
Satellite of Earth	Satellites of Jupiter	Satellites of Uranus
Satellites of Mars	Satellites of Saturn	Satellites of Neptune
Satellites of generally agreed dwarf planets
Satellites of Pluto	Satellites of Haumea	Satellite of Quaoar
Satellite of Makemake	Satellite of Gonggong	Satellite of Eris

Name	Image	Parent	Numeral	Mean radius (km)	Orbital semi-major axis (km)	Sidereal period (d) (r = retrograde)	Discovery year	Year Announced	Discovered by	Notes	Ref(s)
Moon		Earth	I (1)	1,738	384,399	27.321582	Prehistoric	Prehistory	—	Synchronous rotation (Binary)	[14]
Phobos		Mars	I (1)	11.267	9,380	0.319	1877	1877	Hall	Synchronous rotation	[15] [16] [17]
Deimos		Mars	II (2)	6.2±0.18	23,460	1.262	1877	1877	Hall	Synchronous rotation	[15] [16] [17]
Io		Jupiter	I (1)	1,821.6±0.5	421,800	1.769	1610	1610	Galileo	Main-group moon (Galilean)	[17] [18]
Europa		Jupiter	II (2)	1,560.8±0.5	671,100	3.551	1610	1610	Galileo	Main-group moon (Galilean)	[17] [18]
Ganymede		Jupiter	III (3)	2,634.1±0.3	1,070,400	7.155	1610	1610	Galileo	Main-group moon (Galilean)	[17] [18]
Callisto		Jupiter	IV (4)	2,410.3±1.5	1,882,700	16.69	1610	1610	Galileo	Main-group moon (Galilean)	[17] [18]
Amalthea		Jupiter	V (5)	83.5±2	181,400	0.498	1892	1892	Barnard	Inner moon (Amalthea)	[16] [17] [19]
Himalia		Jupiter	VI (6)	69.8	11,461,000	250.56	1904	1905	Perrine	Prograde irregular (Himalia)	[16] [17] [20] [21]
Elara		Jupiter	VII (7)	43	11,741,000	259.64	1905	1905	Perrine	Prograde irregular (Himalia)	[16] [17] [22]
Pasiphae		Jupiter	VIII (8)	30	23,624,000	743.63 (r)	1908	1908	Melotte	Retrograde irregular (Pasiphae)	[16] [17] [23]
Sinope		Jupiter	IX (9)	19	23,939,000	758.90 (r)	1914	1914	Nicholson	Retrograde irregular (Pasiphae)	[16] [17] [24]
Lysithea		Jupiter	X (10)	18	11,717,000	259.20	1938	1938	Nicholson	Prograde irregular (Himalia)	[16] [17] [25]
Carme		Jupiter	XI (11)	23	23,404,000	734.17 (r)	1938	1938	Nicholson	Retrograde irregular (Carme)	[16] [17] [25]
Ananke		Jupiter	XII (12)	14	21,276,000	629.77 (r)	1951	1951	Nicholson	Retrograde irregular (Ananke)	[16] [17] [26]
Leda		Jupiter	XIII (13)	10	11,165,000	240.92	1974	1974	Kowal	Prograde irregular (Himalia)	[16] [17] [27]
Thebe		Jupiter	XIV (14)	49.3±2.0	221,900	0.675	1979	1980	Synnott (Voyager 1)	Inner moon (Amalthea)	[16] [17] [28]
Adrastea		Jupiter	XV (15)	8.2±2.0	129,000	0.298	1979	1979	Jewitt, Danielson (Voyager 1)	Inner moon (Amalthea)	[16] [17] [29]
Metis		Jupiter	XVI (16)	21.5±2.0	128,000	0.295	1979	1980	Synnott (Voyager 1)	Inner moon (Amalthea)	[16] [17] [30]
Callirrhoe		Jupiter	XVII (17)	4.5	24,103,000	758.77 (r)	1999	2000	Scotti, Spahr, McMillan, Larsen, Montani, Gleason, Gehrels	Retrograde irregular (Pasiphae)	[16] [17] [31]
Themisto		Jupiter	XVIII (18)	4	7,284,000	130.02	1975/2000	1975/2000	Kowal and Roemer (original); Sheppard, Jewitt, Fernández, Magnier (rediscovery)	Prograde irregular (Themisto)	[16] [17] [32] [33]
Megaclite		Jupiter	XIX (19)	2.7	23,493,000	752.86 (r)	2000	2001	Sheppard, Jewitt, Fernández, Magnier, Dahm, Evans	Retrograde irregular (Pasiphae)	[16] [17] [34]
Taygete		Jupiter	XX (20)	2.5	23,280,000	732.41 (r)	2000	2001	Sheppard, Jewitt, Fernández, Magnier, Dahm, Evans	Retrograde irregular (Carme)	[16] [17] [34]
Chaldene		Jupiter	XXI (21)	1.9	23,100,000	723.72 (r)	2000	2001	Sheppard, Jewitt, Fernández, Magnier, Dahm, Evans	Retrograde irregular (Carme)	[16] [17] [34]
Harpalyke		Jupiter	XXII (22)	2.2	20,858,000	623.32 (r)	2000	2001	Sheppard, Jewitt, Fernández, Magnier, Dahm, Evans	Retrograde irregular (Ananke)	[16] [17] [34]
Kalyke		Jupiter	XXIII (23)	2.6	23,483,000	742.06 (r)	2000	2001	Sheppard, Jewitt, Fernández, Magnier, Dahm, Evans	Retrograde irregular (Carme)	[16] [17] [34]
Iocaste		Jupiter	XXIV (24)	2.6	21,060,000	631.60 (r)	2000	2001	Sheppard, Jewitt, Fernández, Magnier, Dahm, Evans	Retrograde irregular (Ananke)	[16] [17] [34]
Erinome		Jupiter	XXV (25)	1.6	23,196,000	728.46 (r)	2000	2001	Sheppard, Jewitt, Fernández, Magnier, Dahm, Evans	Retrograde irregular (Carme)	[16] [17] [34]
Isonoe		Jupiter	XXVI (26)	1.9	23,155,000	726.23 (r)	2000	2001	Sheppard, Jewitt, Fernández, Magnier, Dahm, Evans	Retrograde irregular (Carme)	[16] [17] [34]
Praxidike		Jupiter	XXVII (27)	3.5	20,908,000	625.39 (r)	2000	2001	Sheppard, Jewitt, Fernández, Magnier, Dahm, Evans	Retrograde irregular (Ananke)	[16] [17] [34]
Autonoe		Jupiter	XXVIII (28)	2	24,046,000	760.95 (r)	2001	2002	Sheppard, Jewitt, Kleyna	Retrograde irregular (Pasiphae)
Thyone		Jupiter	XXIX (29)	2	20,939,000	627.21 (r)	2001	2002	Sheppard, Jewitt, Kleyna	Retrograde irregular (Ananke)	[16] [17] [35]
Hermippe		Jupiter	XXX (30)	2	21,131,000	633.9 (r)	2001	2002	Sheppard, Jewitt, Kleyna	Retrograde irregular (Ananke)	[16] [17] [35]
Aitne		Jupiter	XXXI (31)	1.5	23,229,000	730.18 (r)	2001	2002	Sheppard, Jewitt, Kleyna	Retrograde irregular (Carme)	[16] [17] [35]
Eurydome		Jupiter	XXXII (32)	1.5	22,865,000	717.33 (r)	2001	2002	Sheppard, Jewitt, Kleyna	Retrograde irregular (Pasiphae)	[16] [17] [35]
Euanthe		Jupiter	XXXIII (33)	1.5	20,797,000	620.49 (r)	2001	2002	Sheppard, Jewitt, Kleyna	Retrograde irregular (Ananke)	[16] [17] [35]
Euporie		Jupiter	XXXIV (34)	1	19,304,000	550.74 (r)	2001	2002	Sheppard, Jewitt, Kleyna	Retrograde irregular (Ananke)	[16] [17] [35]
Orthosie		Jupiter	XXXV (35)	1	20,720,000	622.56 (r)	2001	2002	Sheppard, Jewitt, Kleyna	Retrograde irregular (Ananke)	[16] [17] [35]
Sponde		Jupiter	XXXVI (36)	1	23,487,000	748.34 (r)	2001	2002	Sheppard, Jewitt, Kleyna	Retrograde irregular (Pasiphae)	[16] [17] [35]
Kale		Jupiter	XXXVII (37)	1	23,217,000	729.47 (r)	2001	2002	Sheppard, Jewitt, Kleyna	Retrograde irregular (Carme)	[16] [17] [35]
Pasithee		Jupiter	XXXVIII (38)	1	23,004,000	719.44 (r)	2001	2002	Sheppard, Jewitt, Kleyna	Retrograde irregular (Carme)	[16] [17] [35]
Hegemone		Jupiter	XXXIX (39)	1.5	23,577,000	739.88 (r)	2003	2003	Sheppard, Jewitt, Kleyna, Fernández	Retrograde irregular (Pasiphae)	[16] [17]
Mneme		Jupiter	XL (40)	1	21,035,000	620.04 (r)	2003	2003	Gladman, Allen	Retrograde irregular (Ananke)	[16] [17]
Aoede		Jupiter	XLI (41)	2	23,980,000	761.50 (r)	2003	2003	Sheppard, Jewitt, Kleyna, Fernández, Hsieh	Retrograde irregular (Pasiphae)	[16] [17]
Thelxinoe		Jupiter	XLII (42)	1	21,164,000	628.09 (r)	2003	2004	Sheppard, Jewitt, Kleyna, Gladman, Kavelaars, Petit, Allen	Retrograde irregular (Ananke)	[16] [17]
Arche		Jupiter	XLIII (43)	1.5	23,355,000	731.95 (r)	2002	2002	Sheppard, Meech, Hsieh, Tholen, Tonry	Retrograde irregular (Carme)	[16] [17] [35]
Kallichore		Jupiter	XLIV (44)	1	23,288,000	728.73 (r)	2003	2003	Sheppard, Jewitt, Kleyna, Fernández	Retrograde irregular (Carme)	[16] [17]
Helike		Jupiter	XLV (45)	2	21,069,000	626.32 (r)	2003	2003	Sheppard, Jewitt, Kleyna, Fernández, Hsieh	Retrograde irregular (Ananke)	[16] [17]
Carpo		Jupiter	XLVI (46)	1.5	17,058,000	456.30	2003	2003	Sheppard, Gladman, Kavelaars, Petit, Allen, Jewitt, Kleyna	Prograde irregular (Carpo)	[16] [17]
Eukelade		Jupiter	XLVII (47)	2	23,328,000	730.47 (r)	2003	2003	Sheppard, Jewitt, Kleyna, Fernández, Hsieh	Retrograde irregular (Carme)	[16] [17]
Cyllene		Jupiter	XLVIII (48)	1	23,809,000	752 (r)	2003	2003	Sheppard, Jewitt, Kleyna	Retrograde irregular (Pasiphae)	[16] [17]
Kore		Jupiter	XLIX (49)	1	24,543,000	779.17 (r)	2003	2003	Sheppard, Jewitt, Kleyna	Retrograde irregular (Pasiphae)	[16] [17]
Herse		Jupiter	L (50)	1	22,983,000	714.51 (r)	2003	2003	Gladman, Sheppard, Jewitt, Kleyna, Kavelaars, Petit, Allen	Retrograde irregular (Carme)	[16] [17]
S/2010 J 1		Jupiter	LI (51)	1	23,314,300	723.2 (r)	2010	2011	Jacobson, Brozović, Gladman, Alexandersen	Retrograde irregular (Carme)	[36]
S/2010 J 2		Jupiter	LII (52)	0.5	20,307,200	588.1 (r)	2010	2011	Veillet	Retrograde irregular (Ananke)	[36]
Dia		Jupiter	LIII (53)	2	12,118,000	287.0	2000	2001	Sheppard, Jewitt, Kleyna, Fernández, Hsieh	Prograde irregular (Himalia)	[36]
S/2016 J 1		Jupiter	LIV (54)	1	20,595,500	602.7 (r)	2016	2017	Sheppard	Retrograde irregular (Ananke)	[36]
S/2003 J 18		Jupiter	LV (55)	1	20,274,000	588.0 (r)	2003	2003	Gladman, Sheppard, Jewitt, Kleyna, Kavelaars, Petit, Allen	Retrograde irregular (Ananke)	[36]
S/2011 J 2		Jupiter	LVI (56)	0.5	23,329,700	726.8 (r)	2011	2012	Sheppard	Retrograde irregular (Pasiphae)	[36]
Eirene		Jupiter	LVII (57)	2	23,731,800	759.7 (r)	2003	2003	Sheppard, Jewitt, Kleyna, Fernández, Hsieh	Retrograde irregular (Carme)	[36]
Philophrosyne		Jupiter	LVIII (58)	1	22,820,000	701.3 (r)	2003	2003	Sheppard, Jewitt, Kleyna, Fernández	Retrograde irregular (Pasiphae)	[36]
S/2017 J 1		Jupiter	LIX (59)	2	23,484,000	734.2 (r)	2017	2017	Sheppard	Retrograde irregular (Pasiphae)	[36]
Eupheme		Jupiter	LX (60)	1	21,199,710	627.8 (r)	2003	2003	Sheppard, Jewitt, Kleyna, Fernández, Hsieh	Retrograde irregular (Ananke)	[36]
S/2003 J 19		Jupiter	LXI (61)	1	22,757,000	697.6 (r)	2003	2003	Gladman, Sheppard, Jewitt, Kleyna, Kavelaars, Petit, Allen	Retrograde irregular (Carme)	[36]
Valetudo		Jupiter	LXII (62)	0.5	18,928,100	532.0	2016	2018	Sheppard	Prograde irregular (Valetudo)	[36]
S/2017 J 2		Jupiter	LXIII (63)	1	23,241,000	723.8 (r)	2017	2018	Sheppard	Retrograde irregular (Carme)	[36]
S/2017 J 3		Jupiter	LXIV (64)	1	20,639,300	605.8 (r)	2017	2018	Sheppard	Retrograde irregular (Ananke)	[36]
Pandia		Jupiter	LXV (65)	1.5	11,494,800	251.8	2017	2018	Sheppard	Prograde irregular (Himalia)	[36]
S/2017 J 5		Jupiter	LXVI (66)	1	23,169,400	720.5 (r)	2017	2018	Sheppard	Retrograde irregular (Carme)	[36]
S/2017 J 6		Jupiter	LXVII (67)	1	22,394,700	684.7 (r)	2017	2018	Sheppard	Retrograde irregular (Pasiphae)	[36]
S/2017 J 7		Jupiter	LXVIII (68)	1	20,571,500	602.8 (r)	2017	2018	Sheppard	Retrograde irregular (Ananke)	[36]
S/2017 J 8		Jupiter	LXIX (69)	0.5	23,174,400	720.7 (r)	2017	2018	Sheppard	Retrograde irregular (Carme)	[36]
S/2017 J 9		Jupiter	LXX (70)	1	21,430,000	640.9 (r)	2017	2018	Sheppard	Retrograde irregular (Ananke)	[36]
Ersa		Jupiter	LXXI (71)	1.5	11,453,000	250.4	2018	2018	Sheppard	Prograde irregular (Himalia)	[36]
S/2011 J 1		Jupiter	LXXII (72)	0.5	20,155,300	580.7 (r)	2011	2012	Sheppard	Retrograde irregular (Carme)	[36]
S/2003 J 2		Jupiter	—	1	20,554,400	602.02 (r)	2003	2003	Sheppard, Jewitt, Kleyna, Fernández, Hsieh	Retrograde irregular (Ananke)	[16] [17]
S/2003 J 4		Jupiter	—	1	22,048,600	668.85 (r)	2003	2003	Sheppard, Jewitt, Kleyna, Fernández, Hsieh	Retrograde irregular (Pasiphae)	[16] [17]
S/2003 J 9		Jupiter	—	0.5	24,168,700	767.6 (r)	2003	2003	Sheppard, Jewitt, Kleyna, Fernández	Retrograde irregular (Carme)	[16] [37]
S/2003 J 10		Jupiter	—	1	22,896,000	707.78 (r)	2003	2003	Sheppard, Jewitt, Kleyna, Fernández	Retrograde irregular (Carme?)	[16] [17]
S/2003 J 12		Jupiter	—	0.5	21,557,700	646.64 (r)	2003	2003	Sheppard, Jewitt, Kleyna, Fernández	Retrograde irregular (Ananke)	[16] [17]
S/2003 J 16		Jupiter	—	1	20,512,500	600.18 (r)	2003	2003	Gladman, Sheppard, Jewitt, Kleyna, Kavelaars, Petit, Allen	Retrograde irregular (Ananke)	[16] [38]
S/2003 J 23		Jupiter	—	1	24,678,100	792.00 (r)	2003	2004	Sheppard, Jewitt, Kleyna, Fernández	Retrograde irregular (Pasiphae)	[16] [17]
S/2003 J 24		Jupiter	—	1.5	23,088,000	715.4 (r)	2003	2021	Sheppard, Jewitt, Kleyna, Gladman, Veillet	Retrograde irregular (Carme)	[39]
S/2011 J 3		Jupiter	—	1.5	11,797,200	261.77	2011	2022	Sheppard	Prograde irregular (Himalia)	[40]
S/2016 J 3		Jupiter	—	1	22,213,500	676.37 (r)	2016	2023	Sheppard	Retrograde irregular (Carme)	[41]
S/2016 J 4		Jupiter	—	1	23,664,100	743.69 (r)	2016	2023	Sheppard	Retrograde irregular (Pasiphae)	[42]
S/2018 J 2		Jupiter	—	1.5	11,467,500	250.88	2018	2022	Sheppard	Prograde irregular (Himalia)	[43]
S/2018 J 3		Jupiter	—	0.5	22,826,600	704.56 (r)	2018	2023	Sheppard	Retrograde irregular (Carme)	[44]
S/2018 J 4		Jupiter	—	1	16,504,300	433.16	2018	2023	Sheppard	Prograde irregular (Carpo)	[45]
S/2021 J 1		Jupiter	—	0.5	20,667,200	606.99 (r)	2021	2023	Sheppard	Retrograde irregular (Ananke)	[46]
S/2021 J 2		Jupiter	—	0.5	21,140,600	627.96 (r)	2021	2023	Sheppard	Retrograde irregular (Ananke)	[47]
S/2021 J 3		Jupiter	—	1	21,495,700	643.85 (r)	2021	2023	Sheppard	Retrograde irregular (Ananke)	[48]
S/2021 J 4		Jupiter	—	0.5	22,946,700	710.13 (r)	2021	2023	Sheppard	Retrograde irregular (Carme)	[49]
S/2021 J 5		Jupiter	—	1	22,831,800	704.80 (r)	2021	2023	Sheppard, Tholen, Trujillo	Retrograde irregular (Carme)	[50]
S/2021 J 6		Jupiter	—	0.5	23,427,200	732.55 (r)	2021	2023	Sheppard, Tholen, Trujillo	Retrograde irregular (Carme)	[51]
S/2022 J 1		Jupiter	—	0.5	22,015,500	667.34 (r)	2022	2023	Sheppard	Retrograde irregular (Carme)	[52]
S/2022 J 2		Jupiter	—	0.5	22,413,200	685.51 (r)	2022	2023	Sheppard	Retrograde irregular (Carme)	[53]
S/2022 J 3		Jupiter	—	0.5	20,912,400	617.82 (r)	2022	2023	Sheppard	Retrograde irregular (Ananke)	[54]
Mimas		Saturn	I (1)	198.2±0.4	185,540	0.942	1789	1789	Herschel	Main-group moon	[16] [17]
Enceladus		Saturn	II (2)	252.1±0.2	238,040	1.370	1789	1789	Herschel	Main-group moon	[16] [17]
Tethys		Saturn	III (3)	533.1±0.7	294,670	1.888	1684	1686	Cassini	Main-group moon (Sidera Lodoicea)	[16] [17]
Dione		Saturn	IV (4)	561.4±0.4	377,420	2.737	1684	1686	Cassini	Main-group moon (Sidera Lodoicea)	[16] [17]
Rhea		Saturn	V (5)	763.8±1.0	527,070	4.518	1672	1673	Cassini	Main-group moon (Sidera Lodoicea)	[16] [17]
Titan		Saturn	VI (6)	2,574.73±0.09	1,221,870	15.95	1655	1656	Huygens	Main-group moon	[16] [17]
Hyperion		Saturn	VII (7)	135	1,500,880	21.28	1848	1848	W.Bond, G. Bond, and Lassell	Main-group moon	[16] [17]
Iapetus		Saturn	VIII (8)	735.6±1.5	3,560,840	79.33	1671	1673	Cassini	Main-group moon (Sidera Lodoicea)	[16] [17]
Phoebe		Saturn	IX (9)	106.5±0.7	12,947,780	550.31 (r)	1898	1899	Pickering	Retrograde irregular (Norse)	[16] [17]
Janus		Saturn	X (10)	89.5±1.4	151,460	0.695	1966	1967	Dollfus; Voyager 1 (confirmed)	Inner moon (co-orbital)	[16] [17]
Epimetheus		Saturn	XI (11)	58.1±1.8	151,410	0.694	1966	1967	Walker; Voyager 1 (confirmed)	Inner moon (co-orbital)	[16] [17]
Helene		Saturn	XII (12)	17.6±0.4	377,420	2.737	1980	1980	Laques, Lecacheux	Main-group trojan	[16] [17]
Telesto		Saturn	XIII (13)	12.4±0.4	294,710	1.888	1980	1980	Smith, Reitsema, Larson, Fountain (Voyager 1)	Main-group trojan	[16] [17]
Calypso		Saturn	XIV (14)	10.7±0.7	294,710	1.888	1980	1980	Pascu, Seidelmann, Baum, Currie	Main-group trojan	[16] [17]
Atlas		Saturn	XV (15)	15.1±0.9	137,670	0.602	1980	1980	Terrile (Voyager 1)	Inner moon (shepherd)	[16] [17]
Prometheus		Saturn	XVI (16)	43.1±2.7	139,380	0.613	1980	1980	Collins (Voyager 1)	Inner moon (shepherd)	[16] [17]
Pandora		Saturn	XVII (17)	40.7±1.5	141,720	0.629	1980	1980	Collins (Voyager 1)	Inner moon (shepherd)	[16] [17]
Pan		Saturn	XVIII (18)	14.1	133,580	0.575	1981	1990	Showalter (Voyager 2)	Inner moon (shepherd)	[16] [17]
Ymir		Saturn	XIX (19)	9	23,140,400	1,315.58 (r)	2000	2000	Gladman	Retrograde irregular (Norse)	[16] [17]
Paaliaq		Saturn	XX (20)	11	15,200,000	686.95	2000	2000	Gladman	Prograde irregular (Inuit) (Paaliaq)	[16] [17]
Tarvos		Saturn	XXI (21)	7.5	17,983,000	926.23	2000	2000	Gladman, Kavelaars	Prograde irregular (Gallic)	[16] [17]
Ijiraq		Saturn	XXII (22)	6	11,124,000	451.42	2000	2000	Gladman, Kavelaars	Prograde irregular (Inuit) (Kiviuq)	[16] [17]
Suttungr		Saturn	XXIII (23)	3.5	19,459,000	1,016.67 (r)	2000	2000	Gladman, Kavelaars	Retrograde irregular (Norse)	[16] [17]
Kiviuq		Saturn	XXIV (24)	8	11,110,000	449.22	2000	2000	Gladman	Prograde irregular (Inuit) (Kiviuq)	[16] [17]
Mundilfari		Saturn	XXV (25)	3.5	18,628,000	952.77 (r)	2000	2000	Gladman, Kavelaars	Retrograde irregular (Norse)	[16] [17]
Albiorix		Saturn	XXVI (26)	16	16,182,000	783.45	2000	2000	Holman, Spahr	Prograde irregular (Gallic)	[16] [17]
Skathi		Saturn	XXVII (27)	4	15,540,000	728.20 (r)	2000	2000	Gladman, Kavelaars	Retrograde irregular (Norse)	[16] [17]
Erriapus		Saturn	XXVIII (28)	5	17,343,000	871.19	2000	2000	Gladman, Kavelaars	Prograde irregular (Gallic)	[16] [17]
Siarnaq		Saturn	XXIX (29)	20	18,015,400	896.44	2000	2000	Gladman, Kavelaars	Prograde irregular (Inuit) (Siarnaq)	[16] [17]
Thrymr		Saturn	XXX (30)	3.5	20,314,000	1,094.11 (r)	2000	2000	Gladman, Kavelaars	Retrograde irregular (Norse)	[16] [17]
Narvi		Saturn	XXXI (31)	3.5	19,007,000	1,003.86 (r)	2003	2003	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[16] [17]
Methone		Saturn	XXXII (32)	1.45	194,440	1.010	2004	2004	Porco, Charnoz, Brahic, Dones (Cassini–Huygens)	Alkyonide moon	[17]
Pallene		Saturn	XXXIII (33)	2.22	212,280	1.154	2004	2004	Gordon, Murray, Beurle, et al. (Cassini–Huygens)	Alkyonide moon	[17]
Polydeuces		Saturn	XXXIV (34)	1.3	377,200	2.737	2004	2004	Porco et al. (Cassini–Huygens)	Main-group trojan	[17]
Daphnis		Saturn	XXXV (35)	3.8±0.8	136,500	0.594	2005	2005	Porco et al. (Cassini–Huygens)	Inner moon (shepherd)	[17]
Aegir		Saturn	XXXVI (36)	3	20,751,000	1,117.52 (r)	2004	2005	Sheppard, Jewitt, Kleyna, Marsden	Retrograde irregular (Norse)	[16] [17]
Bebhionn		Saturn	XXXVII (37)	3	17,119,000	834.84	2004	2005	Sheppard, Jewitt, Kleyna, Marsden	Prograde irregular (Gallic)	[16] [17]
Bergelmir		Saturn	XXXVIII (38)	3	19,336,000	1,005.74 (r)	2004	2005	Sheppard, Jewitt, Kleyna, Marsden	Retrograde irregular (Norse)	[16] [17]
Bestla		Saturn	XXXIX (39)	3.5	20,192,000	1,088.72 (r)	2004	2005	Sheppard, Jewitt, Kleyna, Marsden	Retrograde irregular (Norse)	[16] [17]
Farbauti		Saturn	XL (40)	2.5	20,377,000	1,085.55 (r)	2004	2005	Sheppard, Jewitt, Kleyna, Marsden	Retrograde irregular (Norse)	[16] [17]
Fenrir		Saturn	XLI (41)	2	22,454,000	1,260.35 (r)	2004	2005	Sheppard, Jewitt, Kleyna, Marsden	Retrograde irregular (Norse)	[16] [17]
Fornjot		Saturn	XLII (42)	3	25,146,000	1,494.2 (r)	2004	2005	Sheppard, Jewitt, Kleyna, Marsden	Retrograde irregular (Norse)	[16] [17]
Hati		Saturn	XLIII (43)	3	19,846,000	1,038.61 (r)	2004	2005	Sheppard, Jewitt, Kleyna, Marsden	Retrograde irregular (Norse)	[16] [17]
Hyrrokkin		Saturn	XLIV (44)	4	18,437,000	931.86 (r)	2004	2006	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[17]
Kari		Saturn	XLV (45)	3.5	22,089,000	1,230.97 (r)	2006	2006	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[17]
Loge		Saturn	XLVI (46)	3	23,058,000	1,311.36 (r)	2006	2006	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[17]
Skoll		Saturn	XLVII (47)	3	17,665,000	878.29 (r)	2006	2006	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[17]
Surtur		Saturn	XLVIII (48)	3	22,704,000	1,297.36 (r)	2006	2006	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[17]
Anthe		Saturn	XLIX (49)	0.9	197,700	1.0365	2007	2007	Porco et al. (Cassini–Huygens)	Alkyonide moon	[55]
Jarnsaxa		Saturn	L (50)	3	18,811,000	964.74 (r)	2006	2006	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[17]
Greip		Saturn	LI (51)	3	18,206,000	921.19 (r)	2006	2006	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[17]
Tarqeq		Saturn	LII (52)	3.5	18,009,000	887.48	2007	2007	Sheppard, Jewitt, Kleyna	Prograde irregular (Inuit) (Siarnaq)	[17]
Aegaeon		Saturn	LIII (53)	0.33	167,500	0.808	2008	2009	Cassini Imaging Science Team Cassini–Huygens	G-ring moonlet	[56] [57]
Gridr		Saturn	LIV (54)	3	19,418,000	1,010.55 (r)	2004	2019	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[58]
Angrboda		Saturn	LV (55)	3	20,636,000	1,107.13 (r)	2004	2019	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[59]
Skrymir		Saturn	LVI (56)	4	21,163,000	1,149.82 (r)	2004	2019	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[60]
Gerd		Saturn	LVII (57)	4	21,174,000	1,150.69 (r)	2004	2019	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[61]
S/2004 S 26		Saturn	LVIII (58)	4	26,676,000	1,627.18 (r)	2004	2019	Sheppard, Jewitt, Kleyna, Marsden	Retrograde irregular (Norse)	[62]
Eggther		Saturn	LIX (59)	6	19,976,000	1,054.45 (r)	2004	2019	Sheppard, Jewitt, Kleyna, Marsden, Jacobson	Retrograde irregular (Norse)	[63]
S/2004 S 29		Saturn	LX (60)	4	16,981,000	826.44	2004	2019	Sheppard, Jewitt, Kleyna, Marsden	Prograde irregular (Gallic)	[64]
Beli		Saturn	LXI (61)	3	20,396,000	1,087.84 (r)	2004	2019	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[65]
Gunnlod		Saturn	LXII (62)	4	21,214,000	1,153.96 (r)	2004	2019	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[66]
Thiazzi		Saturn	LXIII (63)	4	24,168,000	1,403.18 (r)	2004	2019	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[67]
S/2004 S 34		Saturn	LXIV (64)	3	24,299,000	1,414.59 (r)	2004	2019	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[68]
Alvaldi		Saturn	LXV (65)	6	22,412,000	1,253.08 (r)	2004	2019	Sheppard, Jewitt, Kleyna, Marsden	Retrograde irregular (Norse)	[69]
Geirrod		Saturn	LXVI (66)	4	21,908,000	1,211.02 (r)	2004	2019	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[70]
S/2004 S 7		Saturn	—	3	20,999,000	1,140.24 (r)	2004	2005	Sheppard, Jewitt, Kleyna, Marsden	Retrograde irregular (Norse?)	[16] [17]
S/2004 S 12		Saturn	—	2.5	19,878,000	1,046.19 (r)	2004	2005	Sheppard, Jewitt, Kleyna, Marsden	Retrograde irregular (Norse)	[16] [17]
S/2004 S 13		Saturn	—	3	18,404,000	933.48 (r)	2004	2005	Sheppard, Jewitt, Kleyna, Marsden	Retrograde irregular (Norse?)	[16] [17]
S/2004 S 17		Saturn	—	2	19,447,000	1,014.70 (r)	2004	2005	Sheppard, Jewitt, Kleyna, Marsden	Retrograde irregular (Norse?)	[16] [17]
S/2004 S 21		Saturn	—	3	22,645,000	1,272.61 (r)	2004	2019	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[71]
S/2004 S 24		Saturn	—	3	22,901,000	1,294.25	2004	2019	Sheppard, Jewitt, Kleyna, Marsden	Prograde irregular (group unknown, possibly Gallic)	[72]
S/2004 S 28		Saturn	—	4	22,020,000	1,220.31 (r)	2004	2019	Sheppard, Jewitt, Kleyna, Marsden	Retrograde irregular (Norse?)	[73]
S/2004 S 31		Saturn	—	4	17,568,000	869.65	2004	2019	Sheppard, Jewitt, Kleyna, Marsden	Prograde irregular (Inuit) (Siarnaq)	[74]
S/2004 S 36		Saturn	—	3	23,192,000	1,319.07 (r)	2004	2019	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[75]
S/2004 S 37		Saturn	—	4	15,892,000	748.18 (r)	2004	2019	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[76]
S/2004 S 39		Saturn	—	3	23,575,000	1,351.83 (r)	2004	2019	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[77]
S/2004 S 40		Saturn	—	2	16,075,600	765.92 (r)	2004	2023	Sheppard et al.	Retrograde irregular (Norse)	[78]
S/2004 S 41		Saturn	—	2	18,095,000	895.76 (r)	2004	2023	Sheppard et al.	Retrograde irregular (Norse)	[79]
S/2004 S 42		Saturn	—	2	18,240,800	910.61 (r)	2004	2023	Sheppard et al.	Retrograde irregular (Norse)	[80]
S/2004 S 43		Saturn	—	2	18,935,000	971.48 (r)	2004	2023	Sheppard et al.	Retrograde irregular (Norse)	[81]
S/2004 S 44		Saturn	—	2.5	19,515,400	1,014.98 (r)	2004	2023	Sheppard et al.	Retrograde irregular (Norse)	[82]
S/2004 S 45		Saturn	—	2	19,693,600	1,058.95 (r)	2004	2023	Sheppard et al.	Retrograde irregular (Norse)	[83]
S/2004 S 46		Saturn	—	1.5	20,513,000	1,107.57 (r)	2004	2023	Sheppard et al.	Retrograde irregular (Norse)	[84]
S/2004 S 47		Saturn	—	2	16,050,600	755.69 (r)	2004	2023	Sheppard et al.	Retrograde irregular (Norse)	[85]
S/2004 S 48		Saturn	—	2	22,136,700	1,248.52 (r)	2004	2023	Sheppard et al.	Retrograde irregular (Norse)	[86]
S/2004 S 49		Saturn	—	2	22,399,700	1,290.34 (r)	2004	2023	Sheppard et al.	Retrograde irregular (Norse)	[87]
S/2004 S 50		Saturn	—	1.5	22,346,000	1,219.11 (r)	2004	2023	Sheppard et al.	Retrograde irregular (Norse)	[88]
S/2004 S 51		Saturn	—	2	25,208,200	1,544.65 (r)	2004	2023	Sheppard et al.	Retrograde irregular (Norse)	[89]
S/2004 S 52		Saturn	—	1.5	26,448,100	1,573.49 (r)	2004	2023	Sheppard et al.	Retrograde irregular (Norse)	[90]
S/2004 S 53		Saturn	—	2	23,279,800	1,367.72 (r)	2004	2023	Sheppard et al.	Retrograde irregular (Norse)	[91]
S/2005 S 4		Saturn	—	2.5	11,324,500	448.63	2005	2023	Sheppard et al.	Prograde irregular (Inuit) (Kiviuq)	[92]
S/2005 S 5		Saturn	—	1.5	21,366,200	1,138.62 (r)	2005	2023	Sheppard et al.	Retrograde irregular (Norse)	[93]
S/2006 S 1		Saturn	—	3	18,790,000	963.37 (r)	2006	2006	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[17]
S/2006 S 3		Saturn	—	3	22,096,000	1,227.21 (r)	2006	2006	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[17]
S/2006 S 9		Saturn	—	1.5	14,406,600	648.71 (r)	2006	2023	Sheppard et al.	Retrograde irregular (Norse)	[94]
S/2006 S 10		Saturn	—	1.5	18,979,900	965.26 (r)	2006	2023	Sheppard et al.	Retrograde irregular (Norse)	[95]
S/2006 S 11		Saturn	—	1.5	19,711,900	1,018.45 (r)	2006	2023	Sheppard et al.	Retrograde irregular (Norse)	[96]
S/2006 S 12		Saturn	—	2	19,569,800	1,043.16	2006	2023	Sheppard et al.	Prograde irregular (group unknown, possibly Gallic)	[97]
S/2006 S 13		Saturn	—	2	19,953,800	1,061.74 (r)	2006	2023	Sheppard et al.	Retrograde irregular (Norse)	[98]
S/2006 S 14		Saturn	—	1.5	21,062,100	1,150.64 (r)	2006	2023	Sheppard et al.	Retrograde irregular (Norse)	[99]
S/2006 S 15		Saturn	—	2	21,799,400	1,183.57 (r)	2006	2023	Sheppard et al.	Retrograde irregular (Norse)	[100]
S/2006 S 16		Saturn	—	1.5	21,720,700	1,217.36 (r)	2006	2023	Sheppard et al.	Retrograde irregular (Norse)	[101]
S/2006 S 17		Saturn	—	2	22,384,900	1,262.48 (r)	2006	2023	Sheppard et al.	Retrograde irregular (Norse)	[102]
S/2006 S 18		Saturn	—	2	22,760,700	1,324.09 (r)	2006	2023	Sheppard et al.	Retrograde irregular (Norse)	[103]
S/2006 S 19		Saturn	—	2	23,801,100	1,324.68 (r)	2006	2023	Sheppard et al.	Retrograde irregular (Norse)	[104]
S/2006 S 20		Saturn	—	2.5	13,193,800	563.89 (r)	2006	2023	Sheppard et al.	Retrograde irregular (Norse)	[105]
S/2007 S 2		Saturn	—	3	16,725,000	808.08 (r)	2007	2007	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[17]
S/2007 S 3		Saturn	—	3	18,975,000	977.8 (r)	2007	2007	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse?)	[17]
S/2007 S 5		Saturn	—	2	15,835,700	748.50 (r)	2007	2023	Sheppard et al.	Retrograde irregular (Norse)	[106]
S/2007 S 6		Saturn	—	1.5	18,544,900	944.31 (r)	2007	2023	Sheppard et al.	Retrograde irregular (Norse)	[107]
S/2007 S 7		Saturn	—	2	15,931,700	742.79 (r)	2007	2023	Sheppard et al.	Retrograde irregular (Norse)	[108]
S/2007 S 8		Saturn	—	2	17,049,000	826.94	2007	2023	Sheppard et al.	Prograde irregular (Gallic)	[109]
S/2007 S 9		Saturn	—	2	20,174,600	1,099.69 (r)	2007	2023	Sheppard et al.	Retrograde irregular (Norse)	[110]
S/2009 S 1		Saturn	—	0.15	117,000	0.471	2009	2009	Cassini Imaging Science Team Cassini–Huygens	B-ring moonlet	[111]
S/2019 S 1		Saturn	—	3	11,221,000	443.8	2019	2021	Ashton, Gladman, Petit, Alexandersen	Prograde irregular (Inuit) (Kiviuq)	[112]
S/2019 S 2		Saturn	—	1.5	16,559,900	796.22 (r)	2019	2023	Ashton et al.	Retrograde irregular (Norse)	[113]
S/2019 S 3		Saturn	—	2	17,077,200	836.68 (r)	2019	2023	Ashton et al.	Retrograde irregular (Norse)	[114]
S/2019 S 4		Saturn	—	1.5	17,956,700	898.40 (r)	2019	2023	Ashton et al.	Retrograde irregular (Norse)	[115]
S/2019 S 5		Saturn	—	1.5	19,076,900	971.54 (r)	2019	2023	Ashton et al.	Retrograde irregular (Norse)	[116]
S/2019 S 6		Saturn	—	2	18,198,700	905.41	2019	2023	Ashton et al.	Prograde irregular (Inuit) (Siarnaq)	[117]
S/2019 S 7		Saturn	—	2	20,181,300	1,093.86 (r)	2019	2023	Ashton et al.	Retrograde irregular (Norse)	[118]
S/2019 S 8		Saturn	—	2	20,284,400	1,080.60 (r)	2019	2023	Ashton et al.	Retrograde irregular (Norse)	[119]
S/2019 S 9		Saturn	—	2	20,359,000	1,104.27 (r)	2019	2023	Ashton et al.	Retrograde irregular (Norse)	[120]
S/2019 S 10		Saturn	—	1.5	20,713,400	1,129.53 (r)	2019	2023	Ashton et al.	Retrograde irregular (Norse)	[121]
S/2019 S 11		Saturn	—	2	20,663,700	1,097.33 (r)	2019	2023	Ashton et al.	Retrograde irregular (Norse)	[122]
S/2019 S 12		Saturn	—	2	20,904,500	1,130.40 (r)	2019	2023	Ashton et al.	Retrograde irregular (Norse)	[123]
S/2019 S 13		Saturn	—	1.5	20,965,800	1,132.90 (r)	2019	2023	Ashton et al.	Retrograde irregular (Norse)	[124]
S/2019 S 14		Saturn	—	2	17,853,000	902.00	2019	2023	Ashton et al.	Prograde irregular (Inuit) (Siarnaq)	[125]
S/2019 S 15		Saturn	—	1.5	21,189,700	1,156.21 (r)	2019	2023	Ashton et al.	Retrograde irregular (Norse)	[126]
S/2019 S 16		Saturn	—	1.5	23,266,700	1,360.26 (r)	2019	2023	Ashton et al.	Retrograde irregular (Norse)	[127]
S/2019 S 17		Saturn	—	2	22,724,100	1,322.15 (r)	2019	2023	Ashton et al.	Retrograde irregular (Norse)	[128]
S/2019 S 18		Saturn	—	1.5	23,140,700	1,349.74 (r)	2019	2023	Ashton et al.	Retrograde irregular (Norse)	[129]
S/2019 S 19		Saturn	—	1.5	23,047,200	1,342.57 (r)	2019	2023	Ashton et al.	Retrograde irregular (Norse)	[130]
S/2019 S 20		Saturn	—	1.5	23,678,600	1,343.58 (r)	2019	2023	Ashton et al.	Retrograde irregular (Norse)	[131]
S/2019 S 21		Saturn	—	2	26,439,000	1,572.06 (r)	2019	2023	Ashton et al.	Retrograde irregular (Norse)	[132]
S/2020 S 1		Saturn	—	2	11,338,700	450.83	2020	2023	Ashton et al.	Prograde irregular (Inuit) (Kiviuq)	[133]
S/2020 S 2		Saturn	—	1.5	17,869,300	907.00 (r)	2020	2023	Ashton et al.	Retrograde irregular (Norse)	[134]
S/2020 S 3		Saturn	—	1.5	18,054,700	896.35	2020	2023	Ashton et al.	Prograde irregular (Inuit) (Siarnaq)	[135]
S/2020 S 4		Saturn	—	1.5	18,235,500	910.34	2020	2023	Ashton et al.	Prograde irregular (Gallic)	[136]
S/2020 S 5		Saturn	—	1.5	18,391,300	933.52	2020	2023	Ashton et al.	Prograde irregular (Inuit) (Siarnaq)	[137]
S/2020 S 6		Saturn	—	1.5	21,265,300	1,149.11 (r)	2020	2023	Ashton et al.	Retrograde irregular (Norse)	[138]
S/2020 S 7		Saturn	—	1.5	17,400,000	844.85 (r)	2020	2023	Ashton et al.	Retrograde irregular (Norse)	[139]
S/2020 S 8		Saturn	—	1.5	21,966,700	1,201.72 (r)	2020	2023	Ashton et al.	Retrograde irregular (Norse)	[140]
S/2020 S 9		Saturn	—	2	25,434,100	1,565.23 (r)	2020	2023	Ashton et al.	Retrograde irregular (Norse)	[141]
S/2020 S 10		Saturn	—	1.5	25,314,800	1,479.87 (r)	2020	2023	Ashton et al.	Retrograde irregular (Norse)	[142]
Ariel		Uranus	I (1)	578.9±0.6	190,900	2.520	1851	1851	Lassell	Main-group moon	[16] [17]
Umbriel		Uranus	II (2)	584.7±2.8	266,000	4.144	1851	1851	Lassell	Main-group moon	[16] [17]
Titania		Uranus	III (3)	788.9±1.8	436,300	8.706	1787	1787	Herschel	Main-group moon	[16] [17]
Oberon		Uranus	IV (4)	761.4±2.6	583,500	13.46	1787	1787	Herschel	Main-group moon	[16] [17]
Miranda		Uranus	V (5)	235.8±0.7	129,900	1.413	1948	1949	Kuiper	Main-group moon	[16] [17]
Cordelia		Uranus	VI (6)	20.1±3	49,800	0.335	1986	1986	Terrile (Voyager 2)	Inner moon (shepherd)	[16] [17]
Ophelia		Uranus	VII (7)	21.4±4	53,800	0.376	1986	1986	Terrile (Voyager 2)	Inner moon (shepherd)	[16] [17]
Bianca		Uranus	VIII (8)	25.7±2	59,200	0.435	1986	1986	Smith (Voyager 2)	Inner moon	[16] [17]
Cressida		Uranus	IX (9)	39.8±2	61,800	0.464	1986	1986	Synnott (Voyager 2)	Inner moon	[16] [17]
Desdemona		Uranus	X (10)	32±4	62,700	0.474	1986	1986	Synnott (Voyager 2)	Inner moon	[16] [17]
Juliet		Uranus	XI (11)	46.8±4	64,400	0.493	1986	1986	Synnott (Voyager 2)	Inner moon	[16] [17]
Portia		Uranus	XII (12)	67.6±4.0	66,100	0.513	1986	1986	Synnott (Voyager 2)	Inner moon	[16] [17]
Rosalind		Uranus	XIII (13)	36±6	69,900	0.558	1986	1986	Synnott (Voyager 2)	Inner moon	[16] [17]
Belinda		Uranus	XIV (14)	40.3±8	75,300	0.624	1986	1986	Synnott (Voyager 2)	Inner moon	[16] [17]
Puck		Uranus	XV (15)	81±2	86,000	0.762	1985	1986	Synnott (Voyager 2)	Inner moon	[16] [17]
Caliban		Uranus	XVI (16)	36.4	7,231,100	579.73 (r)	1997	1997	Gladman, Nicholson, Burns, Kavelaars	Retrograde irregular (Caliban)	[143] [17]
Sycorax		Uranus	XVII (17)	93	12,179,400	1,288.38 (r)	1997	1997	Gladman, Nicholson, Burns, Kavelaars	Retrograde irregular	[143] [17]
Prospero		Uranus	XVIII (18)	25	16,256,000	1,978.29 (r)	1999	1999	Gladman, Holman, Kavelaars, Petit, Scholl	Retrograde irregular	[16] [17]
Setebos		Uranus	XIX (19)	24	17,418,000	2,225.21 (r)	1999	1999	Gladman, Holman, Kavelaars, Petit, Scholl	Retrograde irregular	[16] [17]
Stephano		Uranus	XX (20)	16	8,004,000	677.36 (r)	1999	1999	Gladman, Holman, Kavelaars, Petit, Scholl	Retrograde irregular (Caliban)	[16] [17]
Trinculo		Uranus	XXI (21)	9.5	8,504,000	749.24 (r)	2001	2002	Holman, Kavelaars, Milisavljevic	Retrograde irregular	[16] [17]
Francisco		Uranus	XXII (22)	11	4,276,000	266.56 (r)	2001	2003	Holman, Kavelaars, Milisavljevic, Gladman	Retrograde irregular	[16] [17]
Margaret		Uranus	XXIII (23)	10	14,345,000	1,687.01	2003	2003	Sheppard, Jewitt	Prograde irregular	[16] [17]
Ferdinand		Uranus	XXIV (24)	10	20,901,000	2,887.21 (r)	2001	2003	Holman, Kavelaars, Milisavljevic, et al.	Retrograde irregular	[16] [17]
Perdita		Uranus	XXV (25)	15	76,417	0.638	1986	1999/2003	Karkoschka (Voyager 2)	Inner moon	[17]
Mab		Uranus	XXVI (26)	12	97,736	0.923	2003	2003	Showalter, Lissauer	Inner moon	[17]
Cupid		Uranus	XXVII (27)	9	74,392	0.613	2003	2003	Showalter, Lissauer	Inner moon	[17]
S/2023 U 1		Uranus	—	4	7,978,000	680.76 (r)	2023	2024	Sheppard	Retrograde irregular (Caliban)	[144]
Triton		Neptune	I (1)	1,353.4±0.9	354,800	5.877 (r)	1846	1846	Lassell	Retrograde irregular	[16] [17]
Nereid		Neptune	II (2)	170±25	5,513,820	360.14	1949	1949	Kuiper	Prograde irregular	[145] [17]
Naiad		Neptune	III (3)	33±3	48,224	0.294	1989	1989	Terrile (Voyager 2)	Inner moon	[16] [17]
Thalassa		Neptune	IV (4)	41±3	50,075	0.311	1989	1989	Terrile (Voyager 2)	Inner moon	[16] [17]
Despina		Neptune	V (5)	78±4.7	52,526	0.335	1989	1989	Synnott (Voyager 2)	Inner moon	[16] [17]
Galatea		Neptune	VI (6)	88±4	61,953	0.429	1989	1989	Synnott (Voyager 2)	Inner moon	[16] [17]
Larissa		Neptune	VII (7)	97±3	73,548	0.555	1981/1989	1981/1989	Reitsema, Hubbard, Lebofsky, Tholen (Voyager 2)	Inner moon	[16] [17]
Proteus		Neptune	VIII (8)	210±7	117,647	1.122	1989	1989	Synnott (Voyager 2)	Inner moon	[16] [17]
Halimede		Neptune	IX (9)	31	15,728,000	1,879.71 (r)	2002	2003	Holman, Kavelaars, Grav, Fraser, Milisavljevic	Retrograde irregular	[16] [17]
Psamathe		Neptune	X (10)	20	46,695,000	9,115.91 (r)	2003	2003	Jewitt, Kleyna, Sheppard, Holman, Kavelaars	Retrograde irregular (Neso)	[16] [17]
Sao		Neptune	XI (11)	22	22,422,000	2,914.07	2002	2003	Holman, Kavelaars, Grav, Fraser, Milisavljevic	Prograde irregular (Sao)	[16] [17]
Laomedeia		Neptune	XII (12)	21	23,571,000	3,167.85	2002	2003	Holman, Kavelaars, Grav, Fraser, Milisavljevic	Prograde irregular (Sao)	[16] [17]
Neso		Neptune	XIII (13)	30	48,387,000	9,740.73 (r)	2002	2003	Holman, Kavelaars, Grav, Fraser, Milisavljevic	Retrograde irregular (Neso)	[16] [17]
Hippocamp		Neptune	XIV (14)	17.4	105,283	0.9362	2004/2013	2013	Showalter et al.	Inner moon	[146]
S/2002 N 5		Neptune	—	19	23,365,200	3,141.26	2002	2024	Holman, Kavelaars, Grav, Fraser	Prograde irregular (Sao)	[147]
S/2021 N 1		Neptune	—	12.5	50,623,600	10,017.93 (r)	2021	2024	Sheppard, Tholen, Trujillo, Lykawka	Retrograde irregular (Neso)	[148]
Charon		Pluto	I (1)	606±0.5	19,591	6.387	1978	1978	Christy	Synchronous rotation (Binary)	[16] [17]
Nix		Pluto	II (2)	22.5	48,671	24.85	2005	2005	Weaver, Stern, Buie, et al.	Chaotic rotation	[16] [17]
Hydra		Pluto	III (3)	27.5	64,698	38.20	2005	2005	Weaver, Stern, Buie, et al.	Chaotic rotation	[16] [17]
Kerberos		Pluto	IV (4)	7	57,729	32.17	2011	2011	Showalter (Hubble)	Chaotic rotation	[16] [17] [149] [150]
Styx		Pluto	V (5)	5.5	42,393	20.16	2012	2012	Showalter (Hubble)	Chaotic rotation	[16] [17] [151]
Hiʻiaka		Haumea	I (1)	≈160	49,880	49.12	2005	2005	Brown et al.	assuming a chaotic rotation	[8] [152] [153]
Namaka		Haumea	II (2)	≈85	25,657	18.2783	2005	2005	Brown et al.	assuming a chaotic rotation	[8] [152] [153]
Weywot		Quaoar	I (1)	40.5±5.5 [154]	14,500±800	12.438	2006	2007	Brown	Binary system	[154] [155]
S/2015 (136472) 1		Makemake	—	≈87.5	>21,000	>12.4	2015	2016	Parker et al.		[156] [157]
Xiangliu		Gonggong	I (1)	<100 [158]	24,020±200	25.221	2010	2016	Marton, Kiss & Müller	assuming a prograde orbit	[158]
Dysnomia		Eris	I (1)	350±60 [7]	37,273±64	15.786	2005	2005	Brown, Rabinowitz, Trujillo et al.	Synchronous rotation (Binary)	[159]

See also

• List of exomoon candidates
• Lists of exoplanets
• List of dwarf planets
• List of Solar System objects by size
• List of Solar System objects most distant from the Sun
• List of black holes
• Lists of stars
• Lists of stars by constellation
• List of IAU designated constellations
• List of multiplanetary systems
• List of galaxies
• List of largest cosmic structures
• Lists of astronomical objects

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External links

• Media related to Natural satellites at Wikimedia Commons