List of Solar System objects by size

Largest objects of the Solar System
Parts-per-million chart of the relative mass distribution of the Solar System, each cubelet denoting 2×1024 kg

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

Relative diameters of the fifty largest bodies in the Solar System, colored by orbital region. Values are diameters in kilometers. Scale is linear.

Objects with radii over 400 km

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]ImageRadius[note 2]VolumeMassSurface areaDensityGravity[note 3]TypeDiscovery
(km)(R🜨)(109 km3)(V🜨)(1021 kg)(M🜨)(106 km2)🜨(g/cm3)(m/s2)(🜨)
Sun
695700 ± ?[13]109.2[14]1,409,300,000[14]1,301,000[14]1989100000[14]333,000[14]6,078,700[14]11,918[14]1.409[14]274.0[14]27.94[14]G2V-class starprehistoric
Jupiter
69911±6[15]10.971,431,2801,3211898187±88[15]317.8361,419[16]120.411.3262±0.0003[15]24.79[15]2.528gas giant planet; has ringsprehistoric
Saturn
58232±6[15]
(136775 for A Ring)
9.140827,130764568317±13[15]95.16242,612[17]83.540.6871±0.0002[15]10.44[15]1.065gas giant planet; has ringsprehistoric
Uranus
25362±7[15]3.98168,34063.186813±4[15]14.5368083.1[18]15.851.270±0.001[15]8.87[15]0.886ice giant planet; has rings1781
Neptune
24622±19[15]3.86562,54057.7102413±5[15]17.1477618.3[19]14.941.638±0.004[15]11.15[15]1.137ice giant planet; has rings1846
Earth
6371.0±0.0001[15]11,083.2115972.4±0.3[15]1510.06447[20]15.5136±0.0003[15]9.81[15]1terrestrial planetprehistoric
Venus
6051.8±1[15]0.9499928.430.8574867.5±0.2[15]0.815460.2[21]0.9035.243±0.003[15]8.87[15]0.905terrestrial planetprehistoric
Mars
3389.5±0.2[15]0.5320163.180.151641.71±0.03[15]0.107144.37[22]0.2833.9341±0.0007[15]3.71[15]0.379terrestrial planetprehistoric
Ganymede
Jupiter III
2634.1±0.30.413576.300.0704148.20.024886.999[23]0.1711.9361.4280.146moon of Jupiter (icy)1610
Titan
Saturn VI
2574.73±0.09[24]0.4037[a]71.500.0658134.50.022583.3054[25]0.1631.880±0.0041.3540.138moon of Saturn (icy)1655
Mercury
2439.4±0.1[15]0.382960.830.0562330.11±0.02[15]0.055374.797[26]0.1475.4291±0.007[15]3.70[15]0.377terrestrial planetprehistoric
Callisto
Jupiter IV
2410.3±1.5[24]0.378358.650.0541107.60.01873.005[27]0.1431.834±0.0031.236030.126moon of Jupiter (icy)1610
Io
Jupiter I
1821.6±0.5[5]0.285925.320.023489.320.01541.698[28]0.0823.528±0.0061.7970.183moon of Jupiter (terrestrial)1610
Moon
Earth I
1737.4±0.1[29]0.272721.9580.020373.46[30]0.012337.937[31]0.0743.344±0.005[29]1.6250.166moon of Earth (terrestrial)prehistoric
Europa
Jupiter II
1560.8±0.5[5]0.245015.930.014748.000.00803530.613[32]0.063.013±0.0051.3160.134moon of Jupiter (terrestrial)1610
Triton
Neptune I
1353.4±0.9[a][24]0.2124[a]10.380.009621.39±0.030.00359923.018[33]0.0452.0610.7820.0797moon of Neptune (icy)1846
Pluto
134340
1188.3±0.80.1877.0570.0065113.03±0.030.002217.790.0341.854±0.0060.6200.063dwarf planet; plutino; multiple1930
Eris
136199
1163±6[b][34]0.1825[b]6.590.006116.6±0.2[35]0.0028170.0332.52±0.070.8240.083dwarf planet; SDO; binary2003
Haumea
136108
798±6 to 816[36]0.121.98[c]0.00184.01±0.04[37]0.000668.140.0162.018[38][d]0.4010.0409dwarf planet;
resonant KBO (7:12);
trinary; has rings
2004
Titania
Uranus III
788.9±1.8[24]0.1237[e]2.060.00193.40±0.060.000597.82[39]0.0151.711±0.0050.3780.0385moon of Uranus1787
Rhea
Saturn V
763.8±1.0[e]0.1199[e]1.870.00172.3070.000397.34[40]0.0141.236±0.0050.260.027moon of Saturn1672
Oberon
Uranus IV
761.4±2.6[a][24]0.1195[a]1.850.00173.08±0.090.00057.285[41]0.0141.63±0.050.3470.035moon of Uranus1787
Iapetus
Saturn VIII
735.6±1.5[5]0.11531.660.00151.8060.000336.80.0131.088±0.0130.2230.0227moon of Saturn1671
Makemake
136472
715+19
−11
[42]
0.1121.530.0014≈ 3.10.000536.40.013≈ 2.10.570.0581dwarf planet; cubewano2005
Gonggong
225088
615±25[43]0.09831.030.00091.75±0.070.000294.7530.0091.72±0.160.30.0306dwarf planet; resonant SDO (3:10)2007
Charon
Pluto I
606.0±0.50.09510.9320.00091.586±0.0150.000254.578[44]0.0091.70±0.020.2880.0294moon of Pluto1978
Umbriel
Uranus II
584.7±2.8[24]0.09180.8370.00081.28±0.030.000204.3[45]0.0081.39±0.160.2340.024moon of Uranus1851
Ariel
Uranus I
578.9±0.6[24]0.09090.8130.00071.25±0.020.0002264.211[46]0.0081.66±0.150.2690.027moon of Uranus1851
Dione
Saturn IV
561.7±0.45[24]0.08810.7410.00071.0950.0001833.965[47]0.0081.478±0.0030.2320.0237moon of Saturn1684
Quaoar
50000
543±20.08790.7370.00071.20±0.05[48]0.00023.830.0082.0±0.5[49]0.30.0306dwarf planet; cubewano; binary; has rings2002
Tethys
Saturn III
533.0±0.7[24]0.08340.6240.00060.6170.0001033.57[50]0.0070.984±0.003[51]0.1450.015moon of Saturn1684
Ceres
1
469.7±0.1[52]0.07420.4330.00040.938[53]0.0001572.85[54]0.006[54]2.170.280.029dwarf planet; belt asteroid1801
Orcus
90482
455+25
−20
0.07190.4040.00040.548±0.010[55]0.0000921.4±0.2[55]0.20.0204dwarf planet; plutino; binary2004
Sedna
90377
453+157
−129
0.07850.5160.0005dwarf planet; sednoid; detached object2003
Salacia
120347
423±110.06640.37290.00030.492±0.007[56]0.0000821.5±0.1[56]0.1650.0168cubewano; binary2004
2002 MS4
307261
400±12[57]0.06280.26810.0002cubewano2002
  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

From 200 to 399 km

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.[58] 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]ImageRadius[note 2]
(km)
Mass
(1018 kg)
Density
(g/cm3)
Type[note 4]Refs[note 5]
r · M
2002 AW197
55565
384±19cubewano[60]
Varda
174567
373±8245±61.23±0.04cubewano; binary[61] · [61]
2013 FY27
532037
370±40SDO; binary[62]
2003 AZ84
208996
362 ~ 386±6 (assuming HE)150 ~ 210 (assuming HE)0.76 ~ 0.87 (assuming HE)plutino; binary[59][63]
Ixion
28978
354.8±0.1plutino[64]
2004 GV9
90568
340±17cubewano[65]
2005 RN43
145452
340+28
−37
cubewano[65]
Varuna
20000
334+77
−43
≈ 1600.99+0.09
−0.02
cubewano[66] · [67]
2002 UX25
55637
332±15125±30.82±0.11cubewano; binary[68] · [69]
2005 RM43
145451
322SDO[70][71]
Gǃkúnǁʼhòmdímà
229762
321±14136.1±3.31.02±0.17SDO; binary[72] · [73]
2014 UZ224
317.5+28.5
−30.5
SDO[74]
2008 OG19
470599
309.5+28
−56.5
0.609±0.004SDO[75] · [75]
2007 JJ43
278361
305+85
−70
cubewano[76]
Chaos
19521
300+70
−65
cubewano[65]
Dysnomia
Eris I
≈ 300; ≤ 370300–500
< 140
1.8–2.4
< 1.2
moon of Eris[77][55]
2010 KZ39≈ 287SDO[78]
2014 EZ51
523692
> 288SDO[79]
2012 VP113≈ 287sednoid[80]
2002 XW93
78799
283+36
−37
other TNO[81]
2004 XR190
612911
≈ 278SDO[7]
2002 XV93
612533
275+11
−12
plutino[82]
2015 RR245
523794
≈ 270resonant KBO (2:9); binary[80]
2003 UZ413
455502
≈ 268plutino[7]
Vesta
4
262.7±0.12593.46belt asteroid type V[83] · [83]
2003 VS2
84922
262±4plutino[84]
Pallas
2
256±2204±32.92±0.08belt asteroid type B[85][86]
2004 TY364
120348
256+19
−20
cubewano[87]
Enceladus
Saturn II
252.1±0.2108.0±0.11.609±0.005moon of Saturn[88] · [89]
2002 TC302
84522
250±7resonant SDO (2:5)[90]
2005 UQ513
202421
249+32
−38
cubewano[60]
Miranda
Uranus V
235.8±0.765.9±7.51.2±0.15moon of Uranus[91] · [92]
Dziewanna
471143
235+18
−5
SDO[93]
2005 TB190
145480
232±31detached object[94]
1999 DE9
26375
231±23resonant SDO (2:5)[95]
2003 FY128
120132
230±11SDO[94]
2002 VR128
84719
224+24
−22
plutino[82]
Vanth
Orcus I
221±587±81.5+1.0
−0.5
moon of 90482 Orcus[96] · [55]
Hygiea
10
216±487.4±6.92.06±0.20belt asteroid type C[97] · [86]
2004 NT33
444030
212+44
−40
cubewano[60]
Proteus
Neptune VIII
210±744≈ 1.3moon of Neptune[5] · [5]
2005 QU182
303775
208±37SDO[94]
2002 KX14
119951
207.5±0.5cubewano[98]
2001 QF298
469372
204+20
−22
plutino[82]
Huya
38628
203±8> 50> 1.43plutino; binary[68] · [99]
2004 PF115
175113
203+49
−38
plutino[82]

Legend:

SDO – scattered disc object
cubewano – classical Kuiper belt object
plutino – 2:3 orbital resonance with Neptune

From 100 to 199 km

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).[100] Many TNOs are omitted from this list as their sizes are poorly known.[59]

Body[note 1]ImageRadius[note 2]
(km)
Mass
(1018 kg)
TypeRefs[note 5]
r · M
2004 UX10
144897
199±20≈ 30plutino[82] · [101]
Mimas
Saturn I
198.2±0.337.49±0.03moon of Saturn[88] · [89][24]
1998 SN165
35671
196±20cubewano[60]
2001 UR163
42301
≈ 176resonant KBO (4:9)[59]
Nereid
Neptune II
170±25moon of Neptune[24]
1996 TL66
15874
170±10SDO[94]
2004 XA192
230965
170+60
−47.5
SDO[82]
2002 WC19
119979
≈ 16977±5resonant KBO (1:2); binary[102] · [102]
Interamnia
704
166±335.2±5.1belt asteroid type F[103] · [86]
Ilmarë
Varda I
163±18moon of 174567 Varda[104]
Europa
52
160±223.9±3.8belt asteroid type C[86]
Hiʻiaka
Haumea I
≈ 16017.9±1.1moon of Haumea[37] · [37]
Davida
511
149±226.6±7.3belt asteroid type C[86]
2002 TX300
55636
143±5cubewano[105]
Actaea
Salacia I
143±12moon of 120347 Salacia[106]
Sylvia
87
137±214.3±0.5outer belt asteroid type X; trinary[86]
Lempo
47171
136±9plutino; trinary[107]
Eunomia
15
135±230.5±1.9belt asteroid type S[86]
Hyperion
Saturn VII
135±45.62±0.05moon of Saturn[58] · [58][24]
Euphrosyne
31
134±216.5±2.6belt asteroid type C; binary[86]
1998 SM165
26308
134±146.87±1.8resonant KBO (1:2)[108] · [108]
Cybele
65
131.5±1.514.8±1.8outer belt asteroid type C[109]
Chariklo
10199
≈ 130centaur; has rings[110]
Juno
3
127±127.0±2.4belt asteroid type S[86]
Hiisi
Lempo II
126±8secondary of 47171 Lempo[107]
Hektor
624
125±137.9±1.4Jupiter trojan (L4) type D; binary[111] · [111]
Sila
79360
124±1510.8±0.22cubewano; binary[112]
2007 RW10
309239
124±15quasi-satellite of Neptune[94]
Altjira
148780
123+19
−70
cubewano; binary[60]
Nunam
79360
118±15secondary of 79360 Sila[112]
Bamberga
324
114±210.2±0.9belt asteroid type C[86]
Patientia
451
112.9±2.310.9±5.3belt asteroid type C[113] · [114]
Psyche
16
112±226.2±2.9belt asteroid type M[86]
Ceto
65489
112±55.4±0.4extended centaur; binary[94] · [115]
Herculina
532
111.2±2.4belt asteroid type S[116]
S/2007 (148780) 1
Altjira I
110+17
−62
secondary of 148780 Altjira[60]
Hesperia
69
110±155.86±1.18belt asteroid type M[116] · [114][117]
Thisbe
88
109±211.6±2.2belt asteroid type B[86]
Doris
48
108±26.9±2.9belt asteroid type C[86]
Chiron
2060 or 95P
108±5centaur; has rings[68]
Phoebe
Saturn IX
106.5±0.78.29±0.01moon of Saturn[58] · [58][24]
S/2012 (38628) 1
Huya I
106±15moon of 38628 Huya[68]
Fortuna
19
105.5±1.08.8±1.4belt asteroid type G[86]
Camilla
107
105±411.2±0.3outer belt asteroid type C; trinary[113] · [114]
Themis
24
104±26.2±2.9belt asteroid type C[86]
Amphitrite
29
102±112.7±2.0belt asteroid type S[86]
Egeria
13
101±29.2±2.1belt asteroid type G[86]
Iris
7
100±513.5±2.3belt asteroid type S[86]
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

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.[59] Asteroid spectral types are mostly Tholen, but some might be SMASS.

Body[note 1]ImageRadius[note 2]
(km)
Mass
(1018 kg)
TypeRefs[note 5]
r · M
Elektra
130
99.5±16.4±0.2belt asteroid type G; multiple[86]
Bienor
54598
99+3
−3.5
centaur[118]
Hebe
6
97.5±1.512.4±2.4belt asteroid type S[86]
Larissa
Neptune VII
97±3≈ 4.2moon of Neptune[119] · [f][24]
Ursula
375
96.8±1.38.4±5.3belt asteroid type C[121] · [114]
S/2018 (532037) 1≈ 95moon of 2013 FY27[62]
Eugenia
45
94±15.8±0.1belt asteroid type F; trinary[86]
Hermione
121
94±35.0±0.3outer belt asteroid type C; binary[122] · [114]
Daphne
41
94±76.1±0.9belt asteroid type C; binary[86]
Aurora
94
93.8±3.6[dubiousdiscuss]6.2±3.6belt asteroid type C[123] · [114]
Bertha
154
93.4±0.99.2±5.2[dubiousdiscuss]belt asteroid type C[114] · [114]
Janus
Saturn X
89.5±1.41.898±0.001moon of Saturn[58] · [58]
Teharonhiawako
88611
89+16
−18
2.44±0.03[dubiousdiscuss]cubewano; binary[60] · [124]
Aegle
96
88.9±0.86.4±6.3belt asteroid type T[113] · [114]
Galatea
Neptune VI
88±42.12±0.08moon of Neptune[119] · [125][24]
Phorcys
Ceto I
87+8
−9
≈ 1.67secondary of 65489 Ceto[115] · [115]
Palma
372
86.8±1.4[dubiousdiscuss]5.2±0.6belt asteroid type B[126] · [114]
Metis
9
86.5±18.0±1.9belt asteroid type S[113] · [114]
Alauda
702
86±286.06±0.36[dubiousdiscuss]belt asteroid type C; binary[126] · [127]
Hilda
153
85.3±1.6outer belt asteroid; Hildas[116]
Himalia
Jupiter VI
854.2±0.6moon of Jupiter[5] · [128]
Namaka
Haumea II
≈ 851.8±1.5moon of Haumea[37] · [37]
Weywot
Quaoar I
≈ 85< ≈ 5moon of 50000 Quaoar
Freia
76
84.2±1.02.0±4.2[dubiousdiscuss]outer belt asteroid type P/type X[121] · [114]
Amalthea
Jupiter V
83.45±2.42.08±0.15moon of Jupiter[129] · [130][24]
Agamemnon
911
83.3±2.0Jupiter trojan (L4) type D[116]
Elpis
59
82.6±2.33±0.5belt asteroid type CP/type B[113] · [114]
Eleonora
354
82.5±1.57.5±2.7belt asteroid type A[86]
Nemesis
128
81.5±2.53.4±1.7belt asteroid type C[86]
Puck
Uranus XV
81±2moon of Uranus[131]
S/2015 (136472) 1
Makemake I
≈ 80moon of Makemake[132]
Sycorax
Uranus XVII
78.5+11.5
−7.5
moon of Uranus[133]
Io
85
77.4±1.9[dubiousdiscuss]2.6±1.5belt asteroid type FC/type B[116] · [114]
Minerva
93
77.08±0.653.5±0.4belt asteroid type C; trinary[113] · [114]
Alexandra
54
77.07±0.326.2±3.5[dubiousdiscuss]belt asteroid type C[113] · [114]
Laetitia
39
77±24.7±1.1belt asteroid type S[114] · [114]
Nemausa
51
75±1.53.9±1.6belt asteroid type G[86]
Kalliope
22
75±2.57.7±0.4belt asteroid type M; binary[86]
Despina
Neptune V
75±3moon of Neptune[24]
Manwë
385446
≈ 75≈ 1.41resonant KBO (4:7); binary[134] · [134]
Pales
49
≈ 74.94.2±2.2belt asteroid type C[116] · [114]
Parthenope
11
74.5±15.5±0.4belt asteroid type S[86]
Arethusa
95
74.0±2.4belt asteroid type C[123]
Pulcova
762
73.7±0.41.4±0.1belt asteroid type F; binary[113] · [135]
Flora
8
73±14.0±1.6belt asteroid type S[86]
Ino
173
72.5±1.52.2±1.3belt asteroid type Xc[86]
Adeona
145
72±1.52.4±0.3belt asteroid type Xc[86]
Irene
14
72±12.9±1.9belt asteroid type S[121] · [114]
Melpomene
18
70.5±14.5±0.9belt asteroid type S[86]
Lamberta
187
70.5±11.9±0.3belt asteroid type Ch[86]
Aglaja
47
71±43.2±1.7belt asteroid type C[114] · [114]
Patroclus
617
70.2±0.41.36±0.11Jupiter trojan (L5) type P; binary[113] · [114]
Julia
89
70±1.44.3±3.2belt asteroid type S[86]
Typhon
42355
69±4.50.87±0.03resonant SDO (7:10); binary[118] · [136]
Massalia
20
67.8±1.85±1.04belt asteroid type S[126] · [114]
Portia
Uranus XII
67.6±4moon of Uranus[5]
Emma
283
66.2±0.11.38±0.03belt asteroid type X; binary[113] · [114]
Paha
Lempo I
66+4
−4.5
0.746±0.001moon of 47171 Lempo[107] · [137]
Lucina
146
65.9±?belt asteroid type C[138]
Sawiskera
Teharonhiawako I
65.5+12
−13
secondary of 88611 Teharonhiawako[60]
Achilles
588
65.0±0.3Jupiter trojan (L4) type DU[113]
Panopaea
70
64.0±0.44.33±1.09belt asteroid type C[113] · [114]
Thule
279
63.3±1.8outer belt asteroid type D[116]
Borasisi
66652
63+12.5
−25.5
3.433±0.027cubewano; binary[60] · [139]
Hestia
46
62.07±1.73.5belt asteroid type P/type Xc[116] · [140]
Leto
68
61.3±1.63.28±1.9belt asteroid type S[113] · [114]
Undina
92
60.46±0.854.43±0.25belt asteroid type X[121] · [114]
Bellona
28
60.45±1.902.62±0.15belt asteroid type S[141] · [114]
Diana
78
60.30±1.351.27±0.13belt asteroid type C[142] · [114]
Anchises
1173
60.2±1.5Jupiter trojan (L5) type P[121]
Bernardinelli-Bernstein
C/2014 UN271
60±7comet[143]
Galatea
74
59.4±1.46.13±5.36belt asteroid type C[144] · [114]
Deiphobus
1867
59.1±0.8Jupiter trojan (L5) type D[145]
Äneas
1172
59.01±0.40Jupiter trojan (L5) type D[146]
Kleopatra
216
59±13.0±0.3belt asteroid type M; trinary[86]
Athamantis
230
59±12.3±1.1belt asteroid type S[86]
Diomedes
1437
58.89±0.59Jupiter trojan (L4) type D[147]
Terpsichore
81
58.9±0.46.19±5.31belt asteroid type C[148] · [114]
Epimetheus
Saturn XI
58.1±1.80.5266±0.0006moon of Saturn[58] · [58]
Victoria
12
58±12.7±1.3belt asteroid type S[86]
Circe
34
57.7±1.0≈ 3.66±0.03belt asteroid type C[113] · [114]
Leda
38
57.7±0.75.71±5.47belt asteroid type C[114] · [114]
Odysseus
1143
57.3±0.3Jupiter trojan (L4) type D[149]
Alcathous
2241
56.8±0.9Jupiter trojan (L5) type D[150]
Melete
56
56.62±0.854.61belt asteroid type P[116] · [114]
Mnemosyne
57
56.3±1.4≈ 12.6±2.4belt asteroid type S[151] · [114]
Nestor
659
56.2±0.9Jupiter trojan (L4) type XC[152]
Harmonia
40
55.6±0.2belt asteroid type S[153]
Leleākūhonua
541132
55+7
−5
sednoid[154]
Euterpe
27
54.9±0.81.67±1.01belt asteroid type S[121] · [114]
Antilochus
1583
54.4±0.3Jupiter trojan (L4) type D[113]
Thorondor
Manwë I
540.5secondary of 385446 Manwë[134] · [134]
Thalia
23
53.8±1.11.96±0.09belt asteroid type S[155] · [114]
Erato
62
53.5±0.3belt asteroid type BU/type Ch[156]
Astraea
5
53.3±1.62.9belt asteroid type S[157] · [140]
Pabu
Borasisi I
52.5+10
−21
secondary of 66652 Borasisi[60]
Eos
221
51.76±2.8≈ 5.87±0.34belt asteroid type S/type K[114] · [114]
Aegina
91
51.7±0.2belt asteroid type C[158]
Leukothea
35
51.5±0.6belt asteroid type C[159]
Menoetius
Patroclus I
51.4±0.25secondary of 617 Patroclus[160]
Isis
42
51.4±1.41.58±0.52belt asteroid type S[114] · [114]
Klotho
97
50.4±0.31.33±0.13belt asteroid type M[113] · [114]
Troilus
1208
50.3±0.5Jupiter trojan (L5) type FCU[161]

From 20 to 49 km

This list includes few examples since there are about 589 asteroids in the asteroid belt with a measured radius between 20 and 49 km.[162] 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.[114][163]

Body[note 1]ImageRadius[note 2]
(km)
Mass
(1015 kg)
Type – notesRefs[note 5]
r · M
Asterope
233
49.8±0.6belt asteroid type T/type K[164]
Pholus
5145
49.5+7.5
−7
centaur[118]
Thebe
Jupiter XIV
49.3±2moon of Jupiter[129]
Lutetia
21
49±11700±20belt asteroid type M[86]
Kalypso
53
48.631±13.299≈ 5630±5000belt asteroid type XC[165] · [114]
Notburga
626
48.42±2.335belt asteroid type XC[114]
Proserpina
26
47.4±0.85748±895belt asteroid type S[166] · [114]
Juliet
Uranus XI
46.8±4moon of Uranus[5]
Urania
30
44±11300±900belt asteroid type S[86]
Ausonia
63
46.5±1.51200±200belt asteroid type S[86]
Beatrix
83
44.819±1.326belt asteroid type X[113]
Concordia
58
44.806±0.419belt asteroid type C[113]
Echidna
Typhon I
44.5±3moon of 42355 Typhon[136]
Automedon
2920
44.287±0.898Jupiter trojan (L4) type D[167]
Antiope
90
43.9±0.5828±22belt asteroid type C; binary[168] · [168]
Prometheus
Saturn XVI
43.1±2.7159.5±1.5moon of Saturn[58] · [58]
Danaë
61
42.969±1.0762890±2780belt asteroid type S[169] · [114]
Thetis
17
42.449±1.0141200belt asteroid type S[170] · [163]
Pandora
55
42.397±1.251belt asteroid type M[171]
Huenna
379
42.394±0.779383±19belt asteroid type B/type C; binary[172] · [173]
Virginia
50
42.037±0.1212310±700belt asteroid type X/type Ch[174] · [114]
Feronia
72
41.975±2.01≈ 3320±8490belt asteroid type TDG[114] · [114]
S/2000 (90) 1
Antiope I
41.9±0.5secondary of 90 Antiope[168]
Poulydamas
4348
41.016±0.313Jupiter trojan (L5) type C[175]
Logos
58534
41±9458±6.9cubewano; binary[176] · [176]
Pandora
Saturn XVII
40.7±1.5137.1±1.9moon of Saturn[58] · [58]
Thalassa
Neptune IV
40.7±2.8moon of Neptune[119]
Niobe
71
40.43±0.4belt asteroid type S[121]
Pomona
32
40.38±0.8belt asteroid type S[177]
Belinda
Uranus XIV
40.3±8moon of Uranus[5]
Elara
Jupiter VII
39.95±1.7moon of Jupiter[178]
Cressida
Uranus IX
39.8±2moon of Uranus[5]
Amycus
55576
38.15±6.25centaur[95]
Hylonome
10370
37.545centaur[179]
Socus
3708
37.831±0.404Jupiter trojan (L5) type C[113]
Nysa
44
37.83±0.37belt asteroid type E[121]
Rosalind
Uranus XIII
36±6moon of Uranus[5]
Maja
66
35.895±0.46belt asteroid type C[121]
Ariadne
43
35.67±0.627≈ 1210±220belt asteroid type S[180] · [114]
Iphigenia
112
35.535±0.26≈ 1970±6780belt asteroid type C[114] · [114]
Xiangliu
Gonggong I
≈ 35±15moon of (225088) Gonggong
Dike
99
33.677±0.208belt asteroid type C[181]
Echeclus
60558 or 174P
32.3±0.8centaur[118]
Desdemona
Uranus X
32±4moon of Uranus[5]
Eurybates
3548
31.943±0.149Jupiter trojan (L4) type CP[113]
Eurynome
79
31.739±0.476belt asteroid type S[182]
Eurydike
75
31.189±0.802belt asteroid type M[183]
Halimede
Neptune IX
≈ 31moon of Neptune[5]
Phocaea
25
30.527±1.232599±60belt asteroid type S[113] · [114]
Naiad
Neptune III
30.2±3.2moon of Neptune[119]
Schwassmann–
Wachmann 1

29P
30.2±3.7comet[184]
Neso
Neptune XIII
≈ 30moon of Neptune[5]
Angelina
64
29.146±0.541belt asteroid type E[185]
Pasiphae
Jupiter VIII
28.9±0.4moon of Jupiter[178]
Alkmene
82
28.811±0.357belt asteroid type S[186]
Nessus
7066
28.5±8.5centaur[118]
Polana
142
27.406±0.139belt asteroid type F[187]
Bianca
Uranus VIII
27±2moon of Uranus[5]
Mathilde
253
26.4103.3±4.4belt asteroid type C[188] · [189]
Hidalgo
944
26.225±1.8centaur[121]
Orus
21900
25.405±0.405Jupiter trojan (L4) type C/type D[113]
Amalthea
113
25.069±0.633belt asteroid type S; binary[113]
Prospero
Uranus XVIII
≈ 25moon of Uranus[5]
Setebos
Uranus XIX
≈ 24moon of Uranus[5]
Carme
Jupiter XI
23.35±0.45moon of Jupiter[178]
Klytia
73
22.295±0.471belt asteroid type S[190]
Sao
Neptune XI
≈ 22moon of Neptune[5]
Echo
60
21.609±0.286315±32belt asteroid type S[191] · [114]
Metis
Jupiter XVI
21.5±2≈ 119.893moon of Jupiter[129] · [192]
Ophelia
Uranus VII
21.4±4moon of Uranus[5]
Lysithea
Jupiter X
21.1±0.35moon of Jupiter[178]
Caliban
Uranus XVI
21+10
−6
moon of Uranus[133]
Laomedeia
Neptune XII
≈ 21moon of Neptune[5]
Cordelia
Uranus VI
20.1±3moon of Uranus[5]
Psamathe
Neptune X
≈ 20moon of Neptune[5]

From 1 to 19 km

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]ImageRadius[note 2]
(km)
Mass
(1015 kg)
Type – notesRefs[note 5]
r · M
Urda
167
19.968±0.132belt asteroid type S[193]
Hydra
Pluto III
19.6548±42moon of Pluto[194] · [195]
Siarnaq
Saturn XXIX
19.65±2.95moon of Saturn[178]
Koronis
158
19.513±0.231belt asteroid type S[196]
Nix
Pluto II
19.01745±40moon of Pluto[194] · [195]
Ganymed
1036
18.838±0.199≈ 167±318Amor asteroid type S[113] · [114]
Okyrhoe
52872
18±0.6centaur[197]
Helene
Saturn XII
17.6±0.4moon of Saturn; Dione trojan (L4)[58]
Sinope
Jupiter IX
17.5±0.3moon of Jupiter[178]
Hippocamp
Neptune XIV
17.4±1≈ 50moon of Neptune[119] · [119]
Leucus
11351
17.078±0.323Jupiter trojan (L4) type D[113]
Stephano
Uranus XX
≈ 16moon of Uranus[5]
Arrokoth
486958
15.85±0.25cubewano; contact binary[198]
Ida
243
15.742±6belt asteroid type S; binary[199] · [200]
Atlas
Saturn XV
15.1±0.96.6moon of Saturn[58] · [58]
Ananke
Jupiter XII
14.55±0.3moon of Jupiter[178]
Albiorix
Saturn XXVI
14.3±2.7moon of Saturn[178]
Pan
Saturn XVIII
14.1±1.34.95moon of Saturn[58] · [201]
Linus
Kalliope I
14±1≈ 60asteroid moon of 22 Kalliope[202] · [203]
Dioretsa
20461
14±3centaur; damocloid[204]
Perdita
Uranus XXV
13±1moon of Uranus[5]
Telesto
Saturn XIII
12.4±0.4moon of Saturn; Tethys trojan (L4)[58]
Mab
Uranus XXVI
12±1moon of Uranus[5]
Phobos
Mars I
11.1±0.1510.659moon of Mars[205] · [206]
Paaliaq
Saturn XX
≈ 11moon of Saturn[5]
Francisco
Uranus XXII
≈ 11moon of Uranus[5]
Leda
Jupiter XIII
10.75±0.85moon of Jupiter[178]
Calypso
Saturn XIV
10.7±0.7moons of Saturn; Tethys trojan (L5)[58]
Polymele
15094
10.548±0.068Jupiter trojan (L4) type P[116]
Margaret
Uranus XXIII
≈ 10moon of Uranus[5]
Ferdinand
Uranus XXIV
≈ 10moon of Uranus[5]
Cupid
Uranus XXVII
9±1moon of Uranus[5]
Ymir
Saturn XIX
≈ 9moon of Saturn[5]
Trinculo
Uranus XXI
≈ 9moon of Uranus[5]
Eros
433
8.42±0.026.687±0.003Amor asteroid type S[207] · [207]
Adrastea
Jupiter XV
8.2±2moon of Jupiter[5]
Kiviuq
Saturn XXIV
≈ 8moon of Saturn[5]
Tarvos
Saturn XXI
≈ 7.5moon of Saturn[5]
Kerberos
Pluto IV
≈ 6.33316±9moon of Pluto[208] · [209]
Gaspra
951
6.26620–30belt asteroid type S[210] · [211]
Deimos
Mars II
6.2±0.181.476moon of Mars[5] · [212]
Skamandrios
Hektor I
6±1.5asteroid moon of 624 Hektor[111]
Ijiraq
Saturn XXII
≈ 6moon of Saturn[5]
Halley's Comet
1P
5.750.22comet[213] · [214]
Styx
Pluto V
≈ 5.5≈ 7.65moon of Pluto[208] · [209]
Romulus
Sylvia I
5.4±2.8asteroid moon of 87 Sylvia[215]
Masursky
2685
5.372±0.085belt asteroid type S[216]
Erriapus
Saturn XXVIII
≈ 5moon of Saturn[5]
Callirrhoe
Jupiter XVII
4.8±0.65moon of Jupiter[178]
Alexhelios
Kleopatra I
4.45±0.8asteroid moon of 216 Kleopatra[217]
Esclangona
1509
4.085±0.3inner belt asteroid type S; binary[218]
Themisto
Jupiter XVIII
≈ 4moon of Jupiter[5]
Daphnis
Saturn XXXV
3.8±0.80.077±0.015moon of Saturn[58] · [58]
Petit-Prince
Eugenia I
3.5±1asteroid moon of 45 Eugenia[219]
Praxidike
Jupiter XXVII
3.5±0.35moon of Jupiter[178]
Bestla
Saturn XXXIX
≈ 3.5moon of Saturn[5]
Remus
Sylvia II
≈ 3.5asteroid moon of 87 Sylvia[215]
Kalyke
Jupiter XXIII
3.45±0.65moon of Jupiter[178]
Cleoselene
Kleopatra II
3.45±0.8asteroid moon of 216 Kleopatra[217]
S/2019 (31) 1
Euphrosyne I
3.35±1.2asteroid moon of 31 Euphrosyne[220]
Tempel 1
9P
3±0.1Jupiter-family comet; Deep Impact flyby and impacted[221]
Phaethon
3200
2.9Apollo asteroid type F[222]
1999 JM8
53319
2.7±0.6Apollo asteroid type X[223]
Borrelly
19P
2.66Jupiter-family comet[224]
Šteins
2867
2.58±0.084belt asteroid type E[113]
Atira
163693
2.4±0.25Atira asteroid type S; binary[225]
Annefrank
5535
2.4belt asteroid type S[226]
Balam
3749
2.332±0.1070.51±0.02belt asteroid type S; trinary[227] · [228]
Pallene
Saturn XXXIII
2.22±0.07moon of Saturn[229]
Florence
3122
2.201±0.0150.079±0.002Amor asteroid type S; trinary[123] · [230]
Wild 2
81P
2.133Jupiter family comet[231]
Litva
2577
2.115Mars-crosser type EU; trinary[232]
Churyumov–Gerasimenko
67P
20.00998Jupiter-family comet[233] · [234]
Donaldjohanson
52246
1.948±0.007belt asteroid type C[235]
Cuno
4183
1.826±0.051Apollo asteroid type S/type Q[236]
1986 DA
6178
1.575Amor asteroid type M[237]
Pichi üñëm
Alauda I
1.55±0.45asteroid moon of 702 Alauda[238]
Toutatis
4179
1.5160.0505Apollo asteroid type S[239] · [239]
Methone
Saturn XXXII
1.45±0.03moon of Saturn[229]
Carpo (moon)
Jupiter XLVI
1.44Moon of Jupiter
1998 QE2
285263
1.375Amor asteroid type S; binary[240]
Polydeuces
Saturn XXXIV
1.3±0.4moon of Saturn; Dione trojan (L5)[58]
2001 SN263
153591
1.315±0.20.00951±0.00013Amor asteroid type C; trinary[241] · [242]
S/2003 (1509) 1
Esclangona I
1.285asteroid moon of 1509 Esclangona[243]
APL
132524
≈ 1.25belt asteroid type S[244]
Camillo
3752
1.153±0.044Apollo asteroid type S[123]
Cruithne
3753
1.036±0.053Aten asteroid type Q; quasi-satellite of Earth[245]

Below 1 km

This list contains examples of objects below 1 km in radius. That means that irregular bodies can have a longer chord in some directions, hence the mean radius averages out. In the asteroid belt alone there are estimated to be between 1.1 and 1.9 million objects with a radius above 0.5 km,[246] many of which are in the range 0.5–1.0 km. Countless more have a radius below 0.5 km. Very few objects in this size range have been explored or even imaged. The exceptions are objects that have been visited by a probe, or have passed close enough to Earth to be imaged. Radius is by mean geometric radius. Number of digits not an endorsement of significant figures. Mass scale shifts from × 1015 to 109 kg, which is equivalent to one billion kg or 1012 grams (Teragram – Tg). Currently most of the objects of mass between 109 kg to 1012 kg (less than 1000 teragrams (Tg)) listed here are near-Earth asteroids (NEAs). The Aten asteroid 1994 WR12 has less mass than the Great Pyramid of Giza, 5.9 × 109 kg. For more about very small objects in the Solar System, see meteoroid, micrometeoroid, cosmic dust, and interplanetary dust cloud. (See also Visited/imaged bodies.)

Body[note 1]ImageRadius[note 2]
(m)
Mass
(109 kg)
Type – notesRefs[note 5]
r · M
Ra-Shalom
2100
990±25Aten asteroid type C[121]
Geographos
1620
980±30Apollo asteroid type S[113]
Midas
1981
975±35Apollo asteroid type S[121]
Mithra
4486
924.5±11Apollo asteroid type S[123]
1998 OH
12538
831.5±164.5Apollo asteroid type S[123]
Tantalus
2102
824.5±22.5Apollo asteroid type Q[247]
Braille
9969
820Mars-crosser type Q[248]
2005 GO21
308242
780Aten asteroid type S[249]
Apollo
1862
≈ 750Apollo asteroid type Q[250]
1999 JD6
85989
731±10.5Aten asteroid type K; contact binary[251]
Icarus
1566
730Apollo asteroid type S[252]
Dactyl
Ida I
700asteroid moon of 243 Ida[253]
Castalia
4769
700Apollo asteroid type S; contact binary[254]
2007 PA8
214869
675±70Apollo asteroid type Q[255]
Moshup
66391
658.5±202490±54Aten asteroid type S; binary[256] · [257]
1950 DA
29075
653≈ 2000Apollo asteroid type S[258] · [259]
2006 HY51
394130
609±114Apollo asteroid[260]
Hartley 2
103P
570±80≈ 300Jupiter-family comet[261] · [261]
2003 SD220
163899
515Aten asteroid type S[262]
Nyx
3908
500±75Amor asteroid type V[263]
2001 WN5
153814
466±5.5Apollo asteroid[264]
2017 YE5
450±25Apollo asteroid type S; binary[265]
Ryugu
162173
432.5±7.5≈ 450Apollo asteroid type Cg[266] · [267]
1997 AE12
162058
423.5±6.5Amor asteroid type S[268]
2014 JO25
409Apollo asteroid type S; contact binary[269]
Hermes
69230
400±50Apollo asteroid type Sq[270]
Didymos
65803
390±4527Apollo asteroid type Xk; binary[271] · [272]
Aten
2062
365±15Aten asteroid type S[113]
Aegaeon
Saturn LIII
330±60moon of Saturn[229]
2015 TB145
325±15Apollo asteroid type S[273]
1994 CC
136617
310±30266±32.9Apollo asteroid type Sq; trinary[274] · [275]
2001 WR1
172034
315.5±9Amor asteroid type S[276]
Golevka
6489
265±15Apollo asteroid type Q[277]
Bennu
101955
262.5±37.578±9Apollo asteroid type B[278] · [279]
2000 WO107
153201
255±41.5Aten asteroid type X[280]
2002 CU11
163132
230±8.5Apollo asteroid[281]
Squannit
Moshup I
225.5±13.5asteroid moon of 66391 Moshup[257]
2014 HQ124
204.5±84Aten asteroid type S[113]
2013 YP139
201±13Apollo asteroid[282]
2008 EV5
341843
200±7Aten asteroid type X/type C[123]
2006 DP14
388188
≈ 200Apollo asteroid type S; contact binary[283]
1988 EG
6037
199.5±1.35Apollo asteroid type S[284]
2010 TK7
189.5±61.5Aten asteroid; Earth trojan (L4)[285]
2006 SU49
292220
≈ 188.5≈ 73Apollo asteroid[286] · [286]
2005 YU55
308635
180±20Apollo asteroid type C[287]
2010 SO16178.5±63Apollo asteroid; co-orbital with Earth[282]
Itokawa
25143
17335.1±1.05Apollo asteroid type S[288] · [288]
Apophis
99942
162.5±7.5≈ 61Aten asteroid type Sq[289] · [290]
S/2009 S 1
≈ 150moon of Saturn[291]
(277475) 2005 WK4
142Apollo asteroid type S[292]
2004 BL86
357439
131.5±13Apollo asteroid type V; binary[293]
2007 TU24
125Apollo asteroid type S[294]
Zoozve
524522
≈ 118Aten asteroid type X; co-orbital with Venus[295]
2011 UW158
436724
110±20Apollo asteroid type S[296]
Dimorphos
Didymos I
85±15asteroid moon of 65803 Didymos[272]
2017 BQ6
78Apollo asteroid type S[297]
YORP
54509
61.8Apollo asteroid type S[298]
Kamoʻoalewa
469219
41Apollo asteroid type S; quasi-satellite of Earth[299]
Duende
367943
23.75Aten asteroid type L[300]
1998 KY26
≈ 15Apollo asteroid type X[301]
2012 TC4
11.5Apollo asteroid type E/type Xe[302]
2014 RC
≈ 11Apollo asteroid type Sq[303]
2010 RF12≈ 3.5≈ 0.0005Apollo asteroid[304]
2011 MD
3+2
−1
Apollo asteroid/Amor asteroid type S[305]
2008 TC3
2.050.00008Apollo asteroid type F/type M[306] · [306]
2023 BU1.5Apollo asteroid[307]
2008 TS26≈ 0.49Apollo asteroid[308]
Solar system planets, major moons, and 3 stars of different sizes are shown comparatively in three levels of zoom: one for the rocky planets, one for the gas giants, and one for the stars.
Largest moons of the Solar System to scale.

See also

Notes

  1. ^ a b c d e Radius estimated using equatorial radius and assuming body is spherical
  2. ^ a b Radius has been determined by various methods, such as optical (Hubble), thermal (Spitzer), or direct imaging via spacecraft
  3. ^ Calculated in Wolfram Alpha using semi axes of 1050 × 840 × 537 (Ellipsoid volume: 1.98395×10^9 km3)
  4. ^ Best fit, assuming Haumea is in hydrostatic equilibrium
  5. ^ a b c Radius estimated by using three radii and assuming body is spheroid
  6. ^ The mass estimate is based on the assumed density of 1.2 g/cm3, and a volume of 3.5 ×106 km3 obtained from a detailed shape model in Stooke (1994).[120]
  1. ^ a b c d e f g Name of body, including alternative names using Roman numerals to designate moons (such as "Saturn I" for Mimas), and numbers to designate minor planets
  2. ^ a b c d e f g Mean radius including uncertainties
  3. ^ Given as surface gravity (1 bar for gaseous planets)
  4. ^ Figures from default source Johnston's Archive—List of Known Trans-Neptunian Objects,[59] if otherwise not mentioned in the References column
  5. ^ a b c d e f Reference column specifically for radius (r) and mass (M) citations

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Further reading

  • NASA Planetary Data System (PDS)
  • Asteroids with Satellites
  • Minor Planet discovery circumstances
  • Supplemental IRAS Minor Planet Survey (SIMPS) and IRAS Minor Planet Survey (IMPS)
    • SIMPS & IMPS (V6, additional, from here)
    • Asteroid Data Archive Archive Planetary Science Institute
  • Planetary fact sheets
  • Asteroid fact sheet
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