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This is a list, in order of size, of most of the larger worlds in our Solar System. Only a few Asteroids, Comets, and Centauri Objects are listed as examples. Thousands more exist but are too numerous to list here. No Kuiper Comet Belt objects or Oort Comet Cloud objects listed for the same reason.
As you see the new pictures of Saturn's Moons, you might want to take a look at this list to get an idea of their size compared to other worlds in our Solar System
Surface Major
Diameter Gravity Atmospheric
Object (Km) (Earth=1) Compositions
Sun 1,391,400 27.9000 H2, He
Jupiter 142,800 2.6431 H2, He & NH4
Saturn 120,540 1.1013 H2, He & NH4
Uranus 51,118 0.8799 H2, He & CH4
Neptune 49,528 1.1408 H2, He & CH4
Earth 12,756 1.0000 N2, O2 & H2O
Venus 12,104 0.9125 CO2, N2 & H2SO4
Mars 6,787 0.3821 CO2, N2 & AR
Ganymede (Jupiter) 5,262 0.1542 Very Thin O3 & O2
Titan (Saturn) 5,150 0.1409 N2, CH4 & H2
Mercury 4,878 0.3924 Very Thin He & H2
Callisto (Jupiter) 4,800 0.1206 None
Io (Jupiter) 3,630 0.1802 Thin SO2, S & Na
Moon (Earth) 3,467 0.1611 None
Europa (Jupiter) 3,130 0.1435 Very Thin O2
Triton (Neptune) 2,700 0.0607 Thin N2 & CH4
Pluto 2,300 0.0534 Thin N2 & CH4
Titania (Uranus) 1,580 0.0200 None
Rhea (Saturn) 1,530 0.0281 None
Oberon (Uranus) 1,520 0.0106 None
Iapetus (Saturn) 1,440 0.0225 None
Charon (Pluto) 1,190 0.0210 None
Umbriel (Uranus) 1,170 0.0083 None
Ariel (Uranus) 1,160 0.0127 None
Dione (Saturn) 1,120 0.0222 None
Tethys (Saturn) 1,050 0.0153 None
Ceres 1 (Asteroid) 914 0.0441 None
Pallas 2 (Asteroid) 522 0.0198 None
Vesta 4 (Asteroid) 500 0.0201 None
Enceladus (Saturn) 500 0.0079 None
Miranda (Uranus) 470 0.0042 None
Hygia 10 (Asteroid) 443 0.0167 None
Proteus (Neptune) 400 0.0120 None
Mimas (Saturn) 390 0.0070 None
Hyperion (Saturn) 350 x 200 0.0063 None
Nereid (Neptune) 340 0.0038 None
Davida 511 (Asteroid) 336 0.0118 None
Interamnia (Asteroid) 334 0.0120 None
Hektor 642 (Trojan Ast.) 300 x 150 0.0094 None
Europa (Asteroid) 291 0.0091 None
Eunomia 15 (Asteroid) 272 0.0086 None
Sylvia (Asteroid) 272 0.0088 None
Amalthea (Jupiter) 270 x 150 0.0089 None
Laetitia 39 (Asteroid) 266 0.0072 None
Chiron 2060 (Centaur) 250 0.0052 Coma H2O
1989 FC (Apollo Asteroid) 250 0.0074 None
Psyche 16 (Asteroid) 250 0.0072 None
Euphrasyne (Asteroid) 248 0.0070 None
Cybele (Asteroid) 246 0.0068 None
Juno 3 (Asteroid) 244 0.0069 None
Bamberga (Asteroid) 242 0.0067 None
Camilla 118 (Asteroid) 237 0.0061 None
Herculina 532 (Asteroid) 231 0.0065 None
Patientia (Asteroid) 230 0.0063 None
1992 QB1 (Centaur) 225 0.0013 None
Cordelia (Uranus) 220 0.0009 None
Janus (Saturn) 220 x 160 0.0049 None
Eugenia (Asteroid) 214 0.0065 None
Thisbe 210 (Asteroid) 210 0.0065 None
Iris 7 (Asteroid) 209 0.0062 None
Daphne 41 (Asteroid) 201 0.0061 None
Hebe 6 (Asteroid) 201 0.0059 None
Amphitrite 29 (Asteroid) 195 0.0057 None
Larissa (Neptune) 190 0.0052 None
Despoina (Neptune) 180 0.0051 None
Himalia (Jupiter) 180 0.0043 None
Metis 9 (Asteroid) 179 0.0060 None
Kalliope 22 (Asteroid) 177 0.0057 None
Pholus 5145 (Centaur) 175 0.0028 None
Irene 14 (Asteroid) 158 0.0052 None
Puck (Uranus) 150 0.0039 None
Galatea (Neptune) 150 0.0040 None
Agamemnon 911 (Trojan Ast.)148 0.0053 None
Metis 9 (Asteroid) 145 0.0051 None
Epimetheus (Saturn) 140 x 100 0.0039 None
Prometheus (Saturn) 140 x 80 0.0058 None
Zelinda 654 (Asteroid) 121 0.0056 None
Portia (Uranus) 110 0.0033 None
Thalia 23 (Asteroid) 110 0.0051 None
Pandora (Saturn) 110 x 70 0.0047 None
Thebe (Jupiter) 100 0.0032 None
Nausikaa 192 (Asteroid) 94 0.0049 None
Elara (Jupiter) 80 0.0024 None
Juliet (Uranus) 80 0.0019 None
Thalassa (Neptune) 80 0.0017 None
Pasiphae (Jupiter) 70 0.0009 None
Cressida (Uranus) 70 0.0017 None
Belinda (Uranus) 70 0.0020 None
Mathilde 253 (Asteroid) 61 0.0036 None
Desdemana (Uranus) 60 0.0019 None
Rosalind (Uranus) 60 0.0019 None
Naiad (Neptune) 50 0.0010 None
Carme (Jupiter) 45 0.0008 None
Hale-Bopp (Comet) 42 0.0008 Coma H20
Metis (Jupiter) 40 0.0020 None
Lysithea (Jupiter) 40 0.0012 None
Sinope (Jupiter) 40 0.0008 None
Bianca (Uranus) 40 0.0011 None
P/Schwassamn-Wachmann 1 (Comet) 40 0.0008 Coma H2O
Atlas (Saturn) 40 x 30 0.0008 None
Helene (Saturn) 36 x 30 0.0036 None
Amor 1221(Amor Asteroid) 33 0.0035 None
Ananke (Jupiter) 30 0.0005 None
Cordelia (Uranus) 30 0.0009 None
Ophelia (Uranus) 30 0.0009 None
Ganymed (Amor Asteroid) 30 x 25 0.0025 None
Calypso (Saturn) 30 x 20 0.0004 None
Eros 443 (Amor Ast.) 30 x 19 x7 0.0014 None
Phobos (Mars) 27 x 19 0.0009 None
Telesto (Saturn) 25 0.0003 None
Adrastea (Jupiter) 24 x 16 0.0013 None
Ida 243 (Asteroid) 20 x 12 0.0009 None
Gaspra 951 (Asteroid) 20 x 12 0.0006 None
Leda (Jupiter) 16 0.0003 None
Deimos (Mars) 15 x 11 0.0004 None
Halley's Comet 15 x 10 x7 0.0002 Coma H2O
Pan (Saturn) 10 0.0006 None
McCartney 4148 (Asteroid) 10 0.0004 None
Lennon 4147 (Asteroid) 9.5 0.0003 None
Harrison 4149 (Asteroid) 9 0.0003 None
Star 4150 (Asteroid) 8 0.0004 None
Ivar 1627 (Apollo Asteroid) 8 0.0005 None
S21 (Saturn) 7 0.0001 None
S20 (Saturn) 6 0.0001 None
Toutatis 4179 (Apollo Ast.) 6.5 x 4 0.0001 None
S22 (Saturn) 6 0.0001 None
S19 (Saturn) 5.5 0.0001 None
Honda-Mrkos-Pajdusokova (Comet) 4.5 <0.0001 Coma H2O
Geographos (Apollo Ast.) 4 x 1.5 <0.0001 None
Castalia 4769 (Apollo Ast.) 1.7 x 1 <0.0001 None
Apollo 1862 (Apollo Asteroid) 1.5 <0.0001 None
Dactyl (Asteroid Moon) 1.5 <0.0001 None
1991 BA (Apollo Asteroid) 0.009 <0.0001 None
"Run for it? Running's not a plan! Running's what you do, once a plan fails!" -Earl Bassett
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