List of Solar System objects by size

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This article includes a list of the most massive known objects of the Solar System and partial lists of smaller objects by observed mean radius. These lists can be sorted according to an object's radius and mass and, for the most massive objects, volume, density, and surface gravity, if these values are available.

These lists contain the Sun, the planets, dwarf planets, many of the larger small Solar System bodies (which includes the asteroids), all named natural satellites, and a number of smaller objects of historical or scientific interest, such as comets and near-Earth objects.

Many trans-Neptunian objects (TNOs) have been discovered; in many cases their positions in this list are approximate, as there is frequently a large uncertainty in their estimated diameters due to their distance from Earth.

Solar System objects more massive than 10²¹ kilograms are known or expected to be approximately spherical. Astronomical bodies relax into rounded shapes (spheroids), achieving hydrostatic equilibrium, when their own gravity is sufficient to overcome the structural strength of their material. It was believed that the cutoff for round objects is somewhere between 100 km and 200 km in radius if they have a large amount of ice in their makeup;^[1] however, later studies revealed that icy satellites as large as Iapetus (1,470 kilometers in diameter) are not in hydrostatic equilibrium at this time,^[2] and a 2019 assessment suggests that many TNOs in the size range of 400–1,000 kilometers may not even be fully solid bodies, much less gravitationally rounded.^[3] Objects that are ellipsoids due to their own gravity are here generally referred to as being "round", whether or not they are actually in equilibrium today, while objects that are clearly not ellipsoidal are referred to as being "irregular."

Spheroidal bodies typically have some polar flattening due to the centrifugal force from their rotation, and can sometimes even have quite different equatorial diameters (scalene ellipsoids such as Haumea). Unlike bodies such as Haumea, the irregular bodies have a significantly non-ellipsoidal profile, often with sharp edges.

There can be difficulty in determining the diameter (within a factor of about 2) for typical objects beyond Saturn. (See 2060 Chiron as an example) For TNOs there is some confidence in the diameters, but for non-binary TNOs there is no real confidence in the masses/densities. Many TNOs are often just assumed to have Pluto's density of 2.0 g/cm³, but it is just as likely that they have a comet-like density of only 0.5 g/cm³.^[4]

For example, if a TNO is incorrectly assumed to have a mass of 3.59×10²⁰ kg based on a radius of 350 km with a density of 2 g/cm³ but is later discovered to have a radius of only 175 km with a density of 0.5 g/cm³, its true mass would be only 1.12×10¹⁹ kg.

The sizes and masses of many of the moons of Jupiter and Saturn are fairly well known due to numerous observations and interactions of the Galileo and Cassini orbiters; however, many of the moons with a radius less than ~100 km, such as Jupiter's Himalia, have far less certain masses.^[5] Further out from Saturn, the sizes and masses of objects are less clear. There has not yet been an orbiter around Uranus or Neptune for long-term study of their moons. For the small outer irregular moons of Uranus, such as Sycorax, which were not discovered by the Voyager 2 flyby, even different NASA web pages, such as the National Space Science Data Center^[6] and JPL Solar System Dynamics,^[5] give somewhat contradictory size and albedo estimates depending on which research paper is being cited.

There are uncertainties in the figures for mass and radius, and irregularities in the shape and density, with accuracy often depending on how close the object is to Earth or whether it has been visited by a probe.

Graphical overview[edit]

• 
  Relative masses of the bodies of the Solar System. Objects smaller than Saturn are not visible at this scale.
• 
  Relative masses of the Solar planets. Jupiter at 71% of the total and Saturn at 21% dominate the system.
• 
  Relative masses of the solid bodies of the Solar System. Earth at 48% and Venus at 39% dominate. Bodies less massive than Pluto are not visible at this scale.
• 
  Relative masses of the rounded moons of the Solar System. Mimas, Enceladus, and Miranda are too small to be visible at this scale.

Objects with radius over 400 km[edit]

The following objects have a mean radius of at least 400 km. It was once expected that any icy body larger than approximately 200 km in radius was likely to be in hydrostatic equilibrium (HE).^[7] However, Ceres (r = 470 km) is the smallest body for which detailed measurements are consistent with hydrostatic equilibrium,^[8] whereas Iapetus (r = 735 km) is the largest icy body that has been found to not be in hydrostatic equilibrium.^[9] The known icy moons in this range are all ellipsoidal (except Proteus), but trans-Neptunian objects up to 450–500 km radius may be quite porous.^[10]

For simplicity and comparative purposes, the values are manually calculated assuming that the bodies are all spheres. The size of solid bodies does not include an object's atmosphere. For example, Titan looks bigger than Ganymede, but its solid body is smaller. For the giant planets, the "radius" is defined as the distance from the center at which the atmosphere reaches 1 bar of atmospheric pressure.^[11]

Because Sedna and 2002 MS₄ have no known moons, directly determining their mass is impossible without sending a probe (estimated to be from 1.7x10²¹ to 6.1×10²¹ kg for Sedna^[12]).

Body[note 1]	Image	Radius[note 2]		Volume		Mass		Surface area		Density	Gravity[note 3]		Type	Discovery
		(km)	(R🜨)	(109 km3)	(V🜨)	(1021 kg)	(M🜨)	(106 km2)	🜨	(g/cm3)	(m/s2)	(🜨)
Sun		695508 ± ?[13]	109.2[13]	1,409,300,000[13]	1,301,000[13]	1989100000[13]	333,000[13]	6,078,700[13]	11,918[13]	1.409[13]	274.0[13]	27.94[13]	G2V-class star	prehistoric
Jupiter		69911±6[14]	10.97	1,431,280	1,321	1898187±88[14]	317.83	61,419[15]	120.41	1.3262±0.0003[14]	24.79[14]	2.528	gas giant planet; has rings	prehistoric
Saturn		58232±6[14] (136775 for A Ring)	9.140	827,130	764	568317±13[14]	95.162	42,612[16]	83.54	0.6871±0.0002[14]	10.44[14]	1.065	gas giant planet; has rings	prehistoric
Uranus		25362±7[14]	3.981	68,340	63.1	86813±4[14]	14.536	8083.1[17]	15.85	1.270±0.001[14]	8.87[14]	0.886	ice giant planet; has rings	1781
Neptune		24622±19[14]	3.865	62,540	57.7	102413±5[14]	17.147	7618.3[18]	14.94	1.638±0.004[14]	11.15[14]	1.137	ice giant planet; has rings	1846
Earth		6371.0±0.0001[14]	1	1,083.21	1	5972.4±0.3[14]	1	510.06447[19]	1	5.5136±0.0003[14]	9.81[14]	1	terrestrial planet	prehistoric
Venus		6052±1[14]	0.9499	928.43	0.857	4867.5±0.2[14]	0.815	460.2[20]	0.903	5.243±0.003[14]	8.87[14]	0.905	terrestrial planet	prehistoric
Mars		3389.5±0.2[14]	0.5320	163.18	0.151	641.71±0.03[14]	0.107	144.37[21]	0.283	3.9341±0.0007[14]	3.71[14]	0.379	terrestrial planet	prehistoric
Ganymede Jupiter III		2634.1±0.3	0.4135	76.30	0.0704	148.2	0.0248	86.999[22]	0.171	1.936	1.428	0.146	moon of Jupiter (icy)	1610
Titan Saturn VI		2574.73±0.09[23]	0.4037[a]	71.50	0.0658	134.5	0.0225	83.3054[24]	0.163	1.880±0.004	1.354	0.138	moon of Saturn (icy)	1655
Mercury		2439.4±0.1[14]	0.3829	60.83	0.0562	330.11±0.02[14]	0.0553	74.797[25]	0.147	5.4291±0.007[14]	3.70[14]	0.377	terrestrial planet	prehistoric
Callisto Jupiter IV		2410.3±1.5[23]	0.3783	58.65	0.0541	107.6	0.018	73.005[26]	0.143	1.834±0.003	1.23603	0.126	moon of Jupiter (icy)	1610
Io Jupiter I		1821.6±0.5[5]	0.2859	25.32	0.0234	89.32	0.015	41.698[27]	0.082	3.528±0.006	1.797	0.183	moon of Jupiter (terrestrial)	1610
Moon Earth I		1737.5±0.1[28]	0.2727	21.958	0.0203	73.46[29]	0.0123	37.937[30]	0.074	3.344±0.005[28]	1.625	0.166	moon of Earth (terrestrial)	prehistoric
Europa Jupiter II		1560.8±0.5[5]	0.2450	15.93	0.0147	48.00	0.008035	30.613[31]	0.06	3.013±0.005	1.316	0.134	moon of Jupiter (terrestrial)	1610
Triton Neptune I		1353.4±0.9[a][23]	0.2124[a]	10.38	0.0096	21.39±0.03	0.003599	23.018[32]	0.045	2.061	0.782	0.0797	moon of Neptune (icy)	1846
Pluto 134340		1188.3±0.8	0.187	7.057	0.00651	13.03±0.03	0.0022	17.79	0.034	1.854±0.006	0.620	0.063	dwarf planet; plutino; multiple	1930
Eris 136199		1163±6[b][33]	0.1825[b]	6.59	0.0061	16.6±0.2[34]	0.0028	17	0.033	2.52±0.07	0.824	0.083	dwarf planet; SDO; binary	2003
Haumea 136108		798±6 to 816[35]	0.12	1.98[c]	0.0018	4.01±0.04[36]	0.00066	8.14	0.016	2.018[37][d]	0.401	0.0409	dwarf planet; resonant KBO (7:12); trinary; has rings	2004
Titania Uranus III		788.9±1.8[23]	0.1237[e]	2.06	0.0019	3.40±0.06	0.00059	7.82[38]	0.015	1.711±0.005	0.378	0.0385	moon of Uranus	1787
Rhea Saturn V		763.8±1.0[e]	0.1199[e]	1.87	0.0017	2.307	0.00039	7.34[39]	0.014	1.236±0.005	0.26	0.027	moon of Saturn	1672
Oberon Uranus IV		761.4±2.6[a][23]	0.1195[a]	1.85	0.0017	3.08±0.09	0.0005	7.285[40]	0.014	1.63±0.05	0.347	0.035	moon of Uranus	1787
Iapetus Saturn VIII		735.6±1.5[5]	0.1153	1.66	0.0015	1.806	0.00033	6.8	0.013	1.088±0.013	0.223	0.0227	moon of Saturn	1671
Makemake 136472		715+19 −11[41]	0.112	1.53	0.0014	≈ 3.1	0.00053	6.4	0.013	≈ 2.1	0.57	0.0581	dwarf planet; cubewano	2005
Gonggong 225088		615±25[42]	0.0983	1.03	0.0009	1.75±0.07	0.00029	4.753	0.009	1.72±0.16	0.3	0.0306	dwarf planet?; resonant SDO (3:10)	2007
Charon Pluto I		606.0±0.5	0.0951	0.932	0.0009	1.586±0.015	0.00025	4.578[43]	0.009	1.70±0.02	0.288	0.0294	moon of Pluto	1978
Umbriel Uranus II		584.7±2.8[23]	0.0918	0.837	0.0008	1.28±0.03	0.00020	4.3[44]	0.008	1.39±0.16	0.234	0.024	moon of Uranus	1851
Ariel Uranus I		578.9±0.6[23]	0.0909	0.813	0.0007	1.25±0.02	0.000226	4.211[45]	0.008	1.66±0.15	0.269	0.027	moon of Uranus	1851
Dione Saturn IV		561.7±0.45[23]	0.0881	0.741	0.0007	1.095	0.000183	3.965[46]	0.008	1.478±0.003	0.232	0.0237	moon of Saturn	1684
Quaoar 50000		543±2	0.0879	0.737	0.0007	1.20±0.05[47]	0.0002	3.83	0.008	2.0±0.5[48]	0.3	0.0306	dwarf planet; cubewano; binary; has rings	2002
Tethys Saturn III		533.0±0.7[23]	0.0834	0.624	0.0006	0.617	0.000103	3.57[49]	0.007	0.984±0.003[50]	0.145	0.015	moon of Saturn	1684
Ceres 1		469.7±0.1[51]	0.0742	0.433	0.0004	0.938[52]	0.000157	2.85[53]	0.006[53]	2.17	0.28	0.029	dwarf planet; belt asteroid	1801
Orcus 90482		455+25 −20	0.0719	0.404	0.0004	0.548±0.010[54]	0.000092			1.4±0.2[54]	0.2	0.0204	plutino; binary	2004
Sedna 90377		453+157 −129	0.0785	0.516	0.0005								dwarf planet; sednoid; detached object	2003
Salacia 120347		423±11	0.0664	0.3729	0.0003	0.492±0.007[55]	0.000082			1.5±0.1[55]	0.165	0.0168	cubewano; binary	2004
2002 MS4 307261		400±12[56]	0.0628	0.2681	0.0002								cubewano	2002
star    giant planet    terrestrial planet    dwarf planet    moon of Earth    moon of Jupiter    moon of Saturn    moon of Uranus    moon of Neptune    moon of Pluto

Smaller objects by mean radius[edit]

From 200 to 399 km[edit]

All imaged icy moons with radii greater than 200 km except Proteus are clearly round, although those under 400 km that have had their shapes carefully measured are not in hydrostatic equilibrium.^[57] The known densities of TNOs in this size range are remarkably low (1–1.2 g/cm³), implying that the objects retain significant internal porosity from their formation and were never gravitationally compressed into fully solid bodies.^[10]

Body[note 1]	Image	Radius[note 2] (km)	Mass (1018 kg)	Density (g/cm3)	Type[note 4]	Refs[note 5] r · M
2002 AW197 55565		384±19	–	–	cubewano	[59]
Varda 174567		373±8	245±6	1.23±0.04	cubewano; binary	[60] · [60]
2013 FY27 532037		370±40	–	–	SDO; binary	[61]
2003 AZ84 208996		362 ~ 386±6 (assuming HE)	150 ~ 210 (assuming HE)	0.76 ~ 0.87 (assuming HE)	plutino; binary	[58][62]
Ixion 28978		354.8±0.1	–	–	plutino	[63]
2004 GV9 90568		340±17	–	–	cubewano	[64]
2005 RN43 145452		340+28 −37	–	–	cubewano	[64]
Varuna 20000		334+77 −43	≈ 160	0.99+0.09 −0.02	cubewano	[65] · [66]
2002 UX25 55637		332±15	125±3	0.82±0.11	cubewano; binary	[67] · [68]
2005 RM43 145451		322	–	–	SDO	[69][70]
Gǃkúnǁʼhòmdímà 229762		321±14	136.1±3.3	1.02±0.17	SDO; binary	[71] · [72]
2014 UZ224		317.5+28.5 −30.5	–	–	SDO	[73]
2008 OG19 470599		309.5+28 −56.5	–	0.609±0.004	SDO	[74] · [74]
2007 JJ43 278361		305+85 −70	–	–	cubewano	[75]
Chaos 19521		300+70 −65	–	–	cubewano	[64]
Dysnomia Eris I		≈ 300; ≤ 370	300–500 < 140	1.8–2.4 < 1.2	moon of Eris	[76][54]
2014 EZ51 523692		> 288	–	–	SDO	[77]
2012 VP113		≈ 287	–	–	sednoid	[78]
2002 XW93 78799		283+36 −37	–	–	other TNO	[79]
2004 XR190 612911		≈ 278	–	–	SDO	[7]
2002 XV93 612533		275+11 −12	–	–	plutino	[80]
2015 RR245 523794		≈ 270	–	–	resonant KBO (2:9); binary	[78]
2003 UZ413 455502		≈ 268	–	–	plutino	[7]
Vesta 4		262.7±0.1	259	3.46	belt asteroid type V	[81] · [81]
2003 VS2 84922		262±4	–	–	plutino	[82]
Pallas 2		256±2	204±3	2.92±0.08	belt asteroid type B	[83][84]
2004 TY364 120348		256+19 −20	–	–	cubewano	[85]
Enceladus Saturn II		252.1±0.2	108.0±0.1	1.609±0.005	moon of Saturn	[86] · [87]
2002 TC302 84522		250±7	–	–	resonant SDO (2:5)	[88]
2005 UQ513 202421		249+32 −38	–	–	cubewano	[59]
Miranda Uranus V		235.8±0.7	65.9±7.5	1.2±0.15	moon of Uranus	[89] · [90]
Dziewanna 471143		235+18 −5	–	–	SDO	[91]
2005 TB190 145480		232±31	–	–	detached object	[92]
1999 DE9 26375		231±23	–	–	resonant SDO (2:5)	[93]
2003 FY128 120132		230±11	–	–	SDO	[92]
2002 VR128 84719		224+24 −22	–	–	plutino	[80]
Vanth Orcus I		221±5	87±8	1.5+1.0 −0.5	moon of 90482 Orcus	[94] · [54]
Hygiea 10		216±4	87.4±6.9	2.06±0.20	belt asteroid type C	[95] · [84]
2004 NT33 444030		212+44 −40	–	–	cubewano	[59]
Proteus Neptune VIII		210±7	44	≈ 1.3	moon of Neptune	[5] · [5]
2005 QU182 303775		208±37	–	–	SDO	[92]
2002 KX14 119951		207.5±0.5	–	–	cubewano	[96]
2001 QF298 469372		204+20 −22	–	–	plutino	[80]
Huya 38628		203±8	> 50	> 1.43	plutino; binary	[67] · [97]
2004 PF115 175113		203+49 −38	–	–	plutino	[80]
Legend: SDO – scattered disc object cubewano – classical Kuiper belt object plutino – 2:3 orbital resonance with Neptune

From 100 to 199 km[edit]

This list contains a selection of objects estimated to be between 100 and 199 km in radius (200 and 399 km in diameter). The largest of these may have a hydrostatic-equilibrium shape, but most are irregular. Most of the trans-Neptunian objects (TNOs) listed with a radius smaller than 200 km have "assumed sizes based on a generic albedo of 0.09" since they are too far away to directly measure their sizes with existing instruments. Mass switches from 10²¹ kg to 10¹⁸ kg (Zg). Main-belt asteroids have orbital elements constrained by (2.0 AU < a < 3.2 AU; q > 1.666 AU) according to JPL Solar System Dynamics (JPLSSD).^[98] Many TNOs are omitted from this list as their sizes are poorly known.^[58]

Body[note 1]	Image	Radius[note 2] (km)	Mass (1018 kg)	Type	Refs[note 5] r · M
2004 UX10 144897		199±20	≈ 30	plutino	[80] · [99]
Mimas Saturn I		198.2±0.3	37.49±0.03	moon of Saturn	[86] · [87][23]
1998 SN165 35671		196±20		cubewano	[59]
2001 UR163 42301		≈ 176		resonant KBO (4:9)	[58]
Nereid Neptune II		170±25		moon of Neptune	[23]
1996 TL66 15874		170±10		SDO	[92]
2004 XA192 230965		170+60 −47.5		SDO	[80]
2002 WC19 119979		≈ 169	77±5	resonant KBO (1:2); binary	[100] · [100]
Interamnia 704		166±3	35.2±5.1	belt asteroid type F	[101] · [84]
Ilmarë Varda I		163±18		moon of 174567 Varda	[102]
Europa 52		160±2	23.9±3.8	belt asteroid type C	[84]
Hiʻiaka Haumea I		≈ 160	17.9±1.1	moon of Haumea	[36] · [36]
Davida 511		149±2	26.6±7.3	belt asteroid type C	[84]
2002 TX300 55636		143±5		cubewano	[103]
Actaea Salacia I		143±12		moon of 120347 Salacia	[104]
Sylvia 87		137±2	14.3±0.5	outer belt asteroid type X; trinary	[84]
Lempo 47171		136±9		plutino; trinary	[105]
Eunomia 15		135±2	30.5±1.9	belt asteroid type S	[84]
Hyperion Saturn VII		135±4	5.62±0.05	moon of Saturn	[57] · [57][23]
Euphrosyne 31		134±2	16.5±2.6	belt asteroid type C; binary	[84]
1998 SM165 26308		134±14	6.87±1.8	resonant KBO (1:2)	[106] · [106]
Cybele 65		131.5±1.5	14.8±1.8	outer belt asteroid type C	[107]
Chariklo 10199		≈ 130		centaur; has rings	[108]
Juno 3		127±1	27.0±2.4	belt asteroid type S	[84]
Hiisi Lempo II		126±8		secondary of 47171 Lempo	[105]
Hektor 624		125±13	7.9±1.4	Jupiter trojan (L4) type D; binary	[109] · [109]
Sila 79360		124±15	10.8±0.22	cubewano; binary	[110]
2007 RW10 309239		124±15		quasi-satellite of Neptune	[92]
Altjira 148780		123+19 −70		cubewano; binary	[59]
Nunam 79360		118±15		secondary of 79360 Sila	[110]
Bamberga 324		114±2	10.2±0.9	belt asteroid type C	[84]
Patientia 451		112.9±2.3	10.9±5.3	belt asteroid type C	[111] · [112]
Psyche 16		112±2	26.2±2.9	belt asteroid type M	[84]
Ceto 65489		112±5	5.4±0.4	extended centaur; binary	[92] · [113]
Herculina 532		111.2±2.4		belt asteroid type S	[114]
S/2007 (148780) 1 Altjira I		110+17 −62		secondary of 148780 Altjira	[59]
Hesperia 69		110±15	5.86±1.18	belt asteroid type M	[114] · [112][115]
Thisbe 88		109±2	11.6±2.2	belt asteroid type B	[84]
Doris 48		108±2	6.9±2.9	belt asteroid type C	[84]
Chiron 2060 or 95P		108±5		centaur; has rings	[67]
Phoebe Saturn IX		106.5±0.7	8.29±0.01	moon of Saturn	[57] · [57][23]
S/2012 (38628) 1 Huya I		106±15		moon of 38628 Huya	[67]
Fortuna 19		105.5±1.0	8.8±1.4	belt asteroid type G	[84]
Camilla 107		105±4	11.2±0.3	outer belt asteroid type C; trinary	[111] · [112]
Themis 24		104±2	6.2±2.9	belt asteroid type C	[84]
Amphitrite 29		102±1	12.7±2.0	belt asteroid type S	[84]
Egeria 13		101±2	9.2±2.1	belt asteroid type G	[84]
Iris 7		100±5	13.5±2.3	belt asteroid type S	[84]
Legend: centaur – asteroids orbiting between the outer planets Jupiter trojan – asteroids located in Jupiter's L4 and L5 Lagrange points

From 50 to 99 km[edit]

This list contains a selection of objects 50 and 99 km in radius (100 km to 199 km in average diameter). The listed objects currently include most objects in the asteroid belt and moons of the giant planets in this size range, but many newly discovered objects in the outer Solar System are missing, such as those included in the following reference.^[58] Asteroid spectral types are mostly Tholen, but some might be SMASS.

Body[note 1]	Image	Radius[note 2] (km)	Mass (1018 kg)	Type	Refs[note 5] r · M
Elektra 130		99.5±1	6.4±0.2	belt asteroid type G; multiple	[84]
Bienor 54598		99+3 −3.5		centaur	[116]
Hebe 6		97.5±1.5	12.4±2.4	belt asteroid type S	[84]
Larissa Neptune VII		97±3	≈ 4.2	moon of Neptune	[117] · [f][23]
Ursula 375		96.8±1.3	8.4±5.3	belt asteroid type C	[119] · [112]
S/2018 (532037) 1		≈ 95		moon of 2013 FY27	[61]
Eugenia 45		94±1	5.8±0.1	belt asteroid type F; trinary	[84]
Hermione 121		94±3	5.0±0.3	outer belt asteroid type C; binary	[120] · [112]
Daphne 41		94±7	6.1±0.9	belt asteroid type C; binary	[84]
Aurora 94		93.8±3.6[dubious – discuss]	6.2±3.6	belt asteroid type C	[121] · [112]
Bertha 154		93.4±0.9	9.2±5.2[dubious – discuss]	belt asteroid type C	[112] · [112]
Janus Saturn X		89.5±1.4	1.898±0.001	moon of Saturn	[57] · [57]
Teharonhiawako 88611		89+16 −18	2.44±0.03[dubious – discuss]	cubewano; binary	[59] · [122]
Aegle 96		88.9±0.8	6.4±6.3	belt asteroid type T	[111] · [112]
Galatea Neptune VI		88±4	2.12±0.08	moon of Neptune	[117] · [123][23]
Phorcys Ceto I		87+8 −9	≈ 1.67	secondary of 65489 Ceto	[113] · [113]
Palma 372		86.8±1.4[dubious – discuss]	5.2±0.6	belt asteroid type B	[124] · [112]
Metis 9		86.5±1	8.0±1.9	belt asteroid type S	[111] · [112]
Alauda 702		86±28	6.06±0.36[dubious – discuss]	belt asteroid type C; binary	[124] · [125]
Hilda 153		85.3±1.6		outer belt asteroid; Hildas	[114]
Himalia Jupiter VI		85	4.2±0.6	moon of Jupiter	[5] · [126]
Namaka Haumea II		≈ 85	1.8±1.5	moon of Haumea	[36] · [36]
Weywot Quaoar I		≈ 85	< ≈ 5	moon of 50000 Quaoar
Freia 76		84.2±1.0	2.0±4.2[dubious – discuss]	outer belt asteroid type P/type X	[119] · [112]
Amalthea Jupiter V		83.45±2.4	2.08±0.15	moon of Jupiter	[127] · [128][23]
Agamemnon 911		83.3±2.0		Jupiter trojan (L4) type D	[114]
Elpis 59		82.6±2.3	3±0.5	belt asteroid type CP/type B	[111] · [112]
Eleonora 354		82.5±1.5	7.5±2.7	belt asteroid type A	[84]
Nemesis 128		81.5±2.5	3.4±1.7	belt asteroid type C	[84]
Puck Uranus XV		81±2		moon of Uranus	[129]
S/2015 (136472) 1 Makemake I		≈ 80		moon of Makemake	[130]
Sycorax Uranus XVII		78.5+11.5 −7.5		moon of Uranus	[131]
Io 85		77.4±1.9[dubious – discuss]	2.6±1.5	belt asteroid type FC/type B	[114] · [112]
Minerva 93		77.08±0.65	3.5±0.4	belt asteroid type C; trinary	[111] · [112]
Alexandra 54		77.07±0.32	6.2±3.5[dubious – discuss]	belt asteroid type C	[111] · [112]
Laetitia 39		77±2	4.7±1.1	belt asteroid type S	[112] · [112]
Nemausa 51		75±1.5	3.9±1.6	belt asteroid type G	[84]
Kalliope 22		75±2.5	7.7±0.4	belt asteroid type M; binary	[84]
Despina Neptune V		75±3		moon of Neptune	[23]
Manwë 385446		≈ 75	≈ 1.41	resonant KBO (4:7); binary	[132] · [132]
Pales 49		≈ 74.9	4.2±2.2	belt asteroid type C	[114] · [112]
Parthenope 11		74.5±1	5.5±0.4	belt asteroid type S	[84]
Arethusa 95		74.0±2.4		belt asteroid type C	[121]
Pulcova 762		73.7±0.4	1.4±0.1	belt asteroid type F; binary	[111] · [133]
Flora 8		73±1	4.0±1.6	belt asteroid type S	[84]
Ino 173		72.5±1.5	2.2±1.3	belt asteroid type Xc	[84]
Adeona 145		72±1.5	2.4±0.3	belt asteroid type Xc	[84]
Irene 14		72±1	2.9±1.9	belt asteroid type S	[119] · [112]
Melpomene 18		70.5±1	4.5±0.9	belt asteroid type S	[84]
Lamberta 187		70.5±1	1.9±0.3	belt asteroid type Ch	[84]
Aglaja 47		71±4	3.2±1.7	belt asteroid type C	[112] · [112]
Patroclus 617		70.2±0.4	1.36±0.11	Jupiter trojan (L5) type P; binary	[111] · [112]
Julia 89		70±1.4	4.3±3.2	belt asteroid type S	[84]
Typhon 42355		69±4.5	0.87±0.03	resonant SDO (7:10); binary	[116] · [134]
Massalia 20		67.8±1.8	5±1.04	belt asteroid type S	[124] · [112]
Portia Uranus XII		67.6±4		moon of Uranus	[5]
Emma 283		66.2±0.1	1.38±0.03	belt asteroid type X; binary	[111] · [112]
Paha Lempo I		66+4 −4.5	0.746±0.001	moon of 47171 Lempo	[105] · [135]
Lucina 146		65.9±?		belt asteroid type C	[136]
Sawiskera Teharonhiawako I		65.5+12 −13		secondary of 88611 Teharonhiawako	[59]
Achilles 588		65.0±0.3		Jupiter trojan (L4) type DU	[111]
Panopaea 70		64.0±0.4	4.33±1.09	belt asteroid type C	[111] · [112]
Thule 279		63.3±1.8		outer belt asteroid type D	[114]
Borasisi 66652		63+12.5 −25.5	3.433±0.027	cubewano; binary	[59] · [137]
Hestia 46		62.07±1.7	3.5	belt asteroid type P/type Xc	[114] · [138]
Leto 68		61.3±1.6	3.28±1.9	belt asteroid type S	[111] · [112]
Undina 92		60.46±0.85	4.43±0.25	belt asteroid type X	[119] · [112]
Bellona 28		60.45±1.90	2.62±0.15	belt asteroid type S	[139] · [112]
Diana 78		60.30±1.35	1.27±0.13	belt asteroid type C	[140] · [112]
Anchises 1173		60.2±1.5		Jupiter trojan (L5) type P	[119]
Bernardinelli-Bernstein C/2014 UN271		60±7		comet	[141]
Galatea 74		59.4±1.4	6.13±5.36	belt asteroid type C	[142] · [112]
Deiphobus 1867		59.1±0.8		Jupiter trojan (L5) type D	[143]
Äneas 1172		59.01±0.40		Jupiter trojan (L5) type D	[144]
Kleopatra 216		59±1	3.0±0.3	belt asteroid type M; trinary	[84]
Athamantis 230		59±1	2.3±1.1	belt asteroid type S	[84]
Diomedes 1437		58.89±0.59		Jupiter trojan (L4) type D	[145]
Terpsichore 81		58.9±0.4	6.19±5.31	belt asteroid type C	[146] · [112]
Epimetheus Saturn XI		58.1±1.8	0.5266±0.0006	moon of Saturn	[57] · [57]
Victoria 12		58±1	2.7±1.3	belt asteroid type S	[84]
Circe 34		57.7±1.0	≈ 3.66±0.03	belt asteroid type C	[111] · [112]
Leda 38		57.7±0.7	5.71±5.47	belt asteroid type C	[112] · [112]
Odysseus 1143		57.3±0.3		Jupiter trojan (L4) type D	[147]
Alcathous 2241		56.8±0.9		Jupiter trojan (L5) type D	[148]
Melete 56		56.62±0.85	4.61	belt asteroid type P	[114] · [112]
Mnemosyne 57		56.3±1.4	≈ 12.6±2.4	belt asteroid type S	[149] · [112]
Nestor 659		56.2±0.9		Jupiter trojan (L4) type XC	[150]
Harmonia 40		55.6±0.2		belt asteroid type S	[151]
Leleākūhonua 541132		55+7 −5		sednoid	[152]
Euterpe 27		54.9±0.8	1.67±1.01	belt asteroid type S	[119] · [112]
Antilochus 1583		54.4±0.3		Jupiter trojan (L4) type D	[111]
Thorondor Manwë I		54	0.5	secondary of 385446 Manwë	[132] · [132]
Thalia 23		53.8±1.1	1.96±0.09	belt asteroid type S	[153] · [112]
Erato 62		53.5±0.3		belt asteroid type BU/type Ch	[154]
Astraea 5		53.3±1.6	2.9	belt asteroid type S	[155] · [138]
Pabu Borasisi I		52.5+10 −21		secondary of 66652 Borasisi	[59]
Eos 221		51.76±2.8	≈ 5.87±0.34	belt asteroid type S/type K	[112] · [112]
Aegina 91		51.7±0.2		belt asteroid type C	[156]
Leukothea 35		51.5±0.6		belt asteroid type C	[157]
Menoetius Patroclus I		51.4±0.25		secondary of 617 Patroclus	[158]
Isis 42		51.4±1.4	1.58±0.52	belt asteroid type S	[112] · [112]
Klotho 97		50.4±0.3	1.33±0.13	belt asteroid type M	[111] · [112]
Troilus 1208		50.3±0.5		Jupiter trojan (L5) type FCU	[159]

From 20 to 49 km[edit]

This list includes few examples since there are about 589 asteroids in the asteroid belt with a measured radius between 20 and 49 km.^[160] Many thousands of objects of this size range have yet to be discovered in the trans-Neptunian region. The number of digits is not an endorsement of significant figures. The table switches from ×10¹⁸ kg to ×10¹⁵ kg (Eg). Most mass values of asteroids are assumed.^[112][161]

Body[note 1]	Image	Radius[note 2] (km)	Mass (1015 kg)	Type – notes	Refs[note 5] r · M
Asterope 233		49.8±0.6		belt asteroid type T/type K	[162]
Pholus 5145		49.5+7.5 −7		centaur	[116]
Thebe Jupiter XIV		49.3±2		moon of Jupiter	[127]
Lutetia 21		49±1	1700±20	belt asteroid type M	[84]
Kalypso 53		48.631±13.299	≈ 5630±5000	belt asteroid type XC	[163] · [112]
Notburga 626		48.42±2.335		belt asteroid type XC	[112]
Proserpina 26		47.4±0.85	748±895	belt asteroid type S	[164] · [112]
Juliet Uranus XI		46.8±4		moon of Uranus	[5]
Urania 30		44±1	1300±900	belt asteroid type S	[84]
Ausonia 63		46.5±1.5	1200±200	belt asteroid type S	[84]
Beatrix 83		44.819±1.326		belt asteroid type X	[111]
Concordia 58		44.806±0.419		belt asteroid type C	[111]
Echidna Typhon I		44.5±3		moon of 42355 Typhon	[134]
Automedon 2920		44.287±0.898		Jupiter trojan (L4) type D	[165]
Antiope 90		43.9±0.5	828±22	belt asteroid type C; binary	[166] · [166]
Prometheus Saturn XVI		43.1±2.7	159.5±1.5	moon of Saturn	[57] · [57]
Danaë 61		42.969±1.076	2890±2780	belt asteroid type S	[167] · [112]
Thetis 17		42.449±1.014	1200	belt asteroid type S	[168] · [161]
Pandora 55		42.397±1.251		belt asteroid type M	[169]
Huenna 379		42.394±0.779	383±19	belt asteroid type B/type C; binary	[170] · [171]
Virginia 50		42.037±0.121	2310±700	belt asteroid type X/type Ch	[172] · [112]
Feronia 72		41.975±2.01	≈ 3320±8490	belt asteroid type TDG	[112] · [112]
S/2000 (90) 1 Antiope I		41.9±0.5		secondary of 90 Antiope	[166]
Poulydamas 4348		41.016±0.313		Jupiter trojan (L5) type C	[173]
Logos 58534		41±9	458±6.9	cubewano; binary	[174] · [174]
Pandora Saturn XVII		40.7±1.5	137.1±1.9	moon of Saturn	[57] · [57]
Thalassa Neptune IV		40.7±2.8		moon of Neptune	[117]
Niobe 71		40.43±0.4		belt asteroid type S	[119]
Pomona 32		40.38±0.8		belt asteroid type S	[175]
Belinda Uranus XIV		40.3±8		moon of Uranus	[5]
Elara Jupiter VII		39.95±1.7		moon of Jupiter	[176]
Cressida Uranus IX		39.8±2		moon of Uranus	[5]
Amycus 55576		38.15±6.25		centaur	[93]
Hylonome 10370		37.545		centaur	[177]
Socus 3708		37.831±0.404		Jupiter trojan (L5) type C	[111]
Nysa 44		37.83±0.37		belt asteroid type E	[119]
Rosalind Uranus XIII		36±6		moon of Uranus	[5]
Maja 66		35.895±0.46		belt asteroid type C	[119]
Ariadne 43		35.67±0.627	≈ 1210±220	belt asteroid type S	[178] · [112]
Iphigenia 112		35.535±0.26	≈ 1970±6780	belt asteroid type C	[112] · [112]
Xiangliu Gonggong I		≈ 35±15		moon of (225088) Gonggong
Dike 99		33.677±0.208		belt asteroid type C	[179]
Echeclus 60558 or 174P		32.3±0.8		centaur	[116]
Desdemona Uranus X		32±4		moon of Uranus	[5]
Eurybates 3548		31.943±0.149		Jupiter trojan (L4) type CP	[111]
Eurynome 79		31.739±0.476		belt asteroid type S	[180]
Eurydike 75		31.189±0.802		belt asteroid type M	[181]
Halimede Neptune IX		≈ 31		moon of Neptune	[5]
Phocaea 25		30.527±1.232	599±60	belt asteroid type S	[111] · [112]
Naiad Neptune III		30.2±3.2		moon of Neptune	[117]
Schwassmann– Wachmann 1 29P		30.2±3.7		comet	[182]
Neso Neptune XIII		≈ 30		moon of Neptune	[5]
Angelina 64		29.146±0.541		belt asteroid type E	[183]
Pasiphae Jupiter VIII		28.9±0.4		moon of Jupiter	[176]
Alkmene 82		28.811±0.357		belt asteroid type S	[184]
Nessus 7066		28.5±8.5		centaur	[116]
Polana 142		27.406±0.139		belt asteroid type F	[185]
Bianca Uranus VIII		27±2		moon of Uranus	[5]
Mathilde 253		26.4	103.3±4.4	belt asteroid type C	[186] · [187]
Hidalgo 944		26.225±1.8		centaur	[119]
Orus 21900		25.405±0.405		Jupiter trojan (L4) type C/type D	[111]
Amalthea 113		25.069±0.633		belt asteroid type S; binary	[111]
Prospero Uranus XVIII		≈ 25		moon of Uranus	[5]
Setebos Uranus XIX		≈ 24		moon of Uranus	[5]
Carme Jupiter XI		23.35±0.45		moon of Jupiter	[176]
Klytia 73		22.295±0.471		belt asteroid type S	[188]
Sao Neptune XI		≈ 22		moon of Neptune	[5]
Echo 60		21.609±0.286	315±32	belt asteroid type S	[189] · [112]
Metis Jupiter XVI		21.5±2	≈ 119.893	moon of Jupiter	[127] · [190]
Ophelia Uranus VII		21.4±4		moon of Uranus	[5]
Lysithea Jupiter X		21.1±0.35		moon of Jupiter	[176]
Caliban Uranus XVI		21+10 −6		moon of Uranus	[131]
Laomedeia Neptune XII		≈ 21		moon of Neptune	[5]
Cordelia Uranus VI		20.1±3		moon of Uranus	[5]
Psamathe Neptune X		≈ 20		moon of Neptune	[5]

From 1 to 19 km[edit]

This list contains some examples of Solar System objects between 1 and 19 km in radius. This is a common size for asteroids, comets and irregular moons.

Body[note 1]	Image	Radius[note 2] (km)	Mass (1015 kg)	Type – notes	Refs[note 5] r · M
Urda 167		19.968±0.132		belt asteroid type S	[191]
Hydra Pluto III		19.65	48±42	moon of Pluto	[192] · [193]
Siarnaq Saturn XXIX		19.65±2.95		moon of Saturn	[176]
Koronis 158		19.513±0.231		belt asteroid type S	[194]
Nix Pluto II		19.017	45±40	moon of Pluto	[192] · [193]
Ganymed 1036		18.838±0.199	≈ 167±318	Amor asteroid type S	[111] · [112]
Okyrhoe 52872		18±0.6		centaur	[195]
Helene Saturn XII		17.6±0.4		moon of Saturn; Dione trojan (L4)	[57]
Sinope Jupiter IX		17.5±0.3		moon of Jupiter	[176]
Hippocamp Neptune XIV		17.4±1	≈ 50	moon of Neptune	[117] · [117]
Leucus 11351		17.078±0.323		Jupiter trojan (L4) type D	[111]
Stephano Uranus XX		≈ 16		moon of Uranus	[5]
Arrokoth 486958		15.85±0.25		cubewano; contact binary	[196]
Ida 243		15.7	42±6	belt asteroid type S; binary	[197] · [198]
Atlas Saturn XV		15.1±0.9	6.6	moon of Saturn	[57] · [57]
Ananke Jupiter XII		14.55±0.3		moon of Jupiter	[176]
Albiorix Saturn XXVI		14.3±2.7		moon of Saturn	[176]
Pan Saturn XVIII		14.1±1.3	4.95	moon of Saturn	[57] · [199]
Linus Kalliope I		14±1	≈ 60	asteroid moon of 22 Kalliope	[200] · [201]
Dioretsa 20461		14±3		centaur; damocloid	[202]
Perdita Uranus XXV		13±1		moon of Uranus	[5]
Telesto Saturn XIII		12.4±0.4		moon of Saturn; Tethys trojan (L4)	[57]
Mab Uranus XXVI		12±1		moon of Uranus	[5]
Phobos Mars I		11.1±0.15	10.659	moon of Mars	[203] · [204]
Paaliaq Saturn XX		≈ 11		moon of Saturn	[5]
Francisco Uranus XXII		≈ 11		moon of Uranus	[5]
Leda Jupiter XIII		10.75±0.85		moon of Jupiter	[176]
Calypso Saturn XIV		10.7±0.7		moons of Saturn; Tethys trojan (L5)	[57]
Polymele 15094		10.548±0.068		Jupiter trojan (L4) type P	[114]
Margaret Uranus XXIII		≈ 10		moon of Uranus	[5]
Ferdinand Uranus XXIV		≈ 10		moon of Uranus	[5]
Cupid Uranus XXVII		9±1		moon of Uranus	[5]
Ymir Saturn XIX		≈ 9		moon of Saturn	[5]
Trinculo Uranus XXI		≈ 9		moon of Uranus	[5]
Eros 433		8.42±0.02	6.687±0.003	Amor asteroid type S	[205] · [205]
Adrastea Jupiter XV		8.2±2		moon of Jupiter	[5]
Kiviuq Saturn XXIV		≈ 8		moon of Saturn	[5]
Tarvos Saturn XXI		≈ 7.5		moon of Saturn	[5]
Kerberos Pluto IV		≈ 6.333	16±9	moon of Pluto	[206] · [207]
Gaspra 951		6.266	20–30	belt asteroid type S	[208] · [209]
Deimos Mars II		6.2±0.18	1.476	moon of Mars	[5] · [210]
Skamandrios Hektor I		6±1.5		asteroid moon of 624 Hektor	[109]
Ijiraq Saturn XXII		≈ 6		moon of Saturn	[5]
Halley's Comet 1P		5.75	0.22	comet	[211] · [212]
Styx Pluto V		≈ 5.5	≈ 7.65	moon of Pluto	[206] · [207]
Romulus Sylvia I		5.4±2.8		asteroid moon of 87 Sylvia	[213]
Masursky 2685		5.372±0.085		belt asteroid type S	[214]
Erriapus Saturn XXVIII		≈ 5		moon of Saturn	[5]
Callirrhoe Jupiter XVII		4.8±0.65		moon of Jupiter	[176]
Alexhelios Kleopatra I		4.45±0.8		asteroid moon of 216 Kleopatra	[215]
Esclangona 1509		4.085±0.3		inner belt asteroid type S; binary	[216]
Themisto Jupiter XVIII		≈ 4		moon of Jupiter	[5]
Daphnis Saturn XXXV		3.8±0.8	0.077±0.015	moon of Saturn	[57] · [57]
Petit-Prince Eugenia I		3.5±1		asteroid moon of 45 Eugenia	[217]
Praxidike Jupiter XXVII		3.5±0.35		moon of Jupiter	[176]
Bestla Saturn XXXIX		≈ 3.5		moon of Saturn	[5]
Remus Sylvia II		≈ 3.5		asteroid moon of 87 Sylvia	[213]
Kalyke Jupiter XXIII		3.45±0.65		moon of Jupiter	[176]
Cleoselene Kleopatra II		3.45±0.8		asteroid moon of 216 Kleopatra	[215]
S/2019 (31) 1 Euphrosyne I		3.35±1.2		asteroid moon of 31 Euphrosyne	[218]
Tempel 1 9P		3±0.1		Jupiter-family comet; Deep Impact flyby and impacted	[219]
Phaethon 3200		2.9		Apollo asteroid type F	[220]
1999 JM8 53319		2.7±0.6		Apollo asteroid type X	[221]
Borrelly 19P		2.66		Jupiter-family comet	[222]
Šteins 2867		2.58±0.084		belt asteroid type E	[111]
Atira 163693		2.4±0.25		Atira asteroid type S; binary