Jupiter (♃) 139 822 km |
Saturn (♄) 116 464 km |
Uranus (♅) 50 724 km |
Neptune (♆) 49 244 km |
Earth (♁) 12 742 km |
Venus (♀) 12 104 km |
Mars (♂) 6 779 km |
Mercury (☿) 4 879 km |
Ganymed (♃) 5 268 km |
Titan (♄) 5 152 km |
Callisto (♃) 4 821 km |
Io (♃) 3 643 km |
Luna (♁) 3 474 km |
Europa (♃) 3 122 km |
Triton (♆) 2 707 km |
Pluto (♇) 2 374 km |
Eris (E) 2 326 km |
Haumea (H) 2 100 × 1 680 × 1 074 km |
Makemake (M) 1 430 km |
Charon (♇) 1 212 km |
Gonggong (G) 1 210 km |
Quaoar (Q) 1 120 km |
Sedna ~ 1 000 km |
Ceres (⚳) 946 km |
Orcus (O) ~ 900 km |
Salacia (S) ~ 850 km |
2002 MS4 ~ 800 km |
Titania (♅) 1 577 km |
Rhea (♄) 1 528 km |
Oberon (♅) 1 523 km |
Iapetus (♄) 1 469 km |
Umbriel (♅) 1 169 km |
Ariel (♅) 1 158 km |
Dione (♄) 1 123 km |
Tethys (♄) 1 062 km |
Dysnomia (E) ~ 600 km |
Enceladus (♄) 504 km |
Miranda (♅) 472 km |
Mimas (♄) 396 km |
Varda (V) ~ 700 km |
Varuna ~ 1000 × 600 km |
Ixion ~ 700 km |
2002 AW197 ~ 700 km |
2003 AZ84 (A) ~ 900 × 500 km |
2013 FY27 (F) ~ 700 km |
& |
roughly 200 known trans-Neptunians bigger than 400 km |
Vesta (⚶) 573 × 557 × 446 km |
Pallas (⚴) 550 × 516 × 476 km |
Hygiea (⚕) 530 × 407 × 370 km |
Proteus (♆) 424 × 390 × 396 km |
Nereid (♆) ~ 340 km |
Hyperion (♄) 360 × 266 × 205 km |
Phoebe (♄) 219 × 217 × 204 km |
& |
Vanth(O), Ilmarë(V), Hi'iaka(H), Actaea(S), Weywot(Q) |
Interamnia ~ 330 km |
Europa ~ 320 km |
Davida ~ 300 km |
Sylvia ~ 280 km |
Eunomia ~ 270 km |
Euphrosyne ~ 270 km |
Juno ~ 250 km |
Cybele ~ 240 km |
Bamberga ~ 230 km |
Psyche ~ 220 km |
Thisbe ~ 220 km |
Doris ~ 220 km |
Fortuna ~ 210 km |
Themis ~ 210 km |
Amphitrite ~ 200 km |
Egeria ~ 200 km |
Iris ~ 200 km |
Elektra ~ 200 km |
Hebe ~ 200 km |
Kleopatra 270 × 90 × 80 km |
& |
Patientia, Herculina, Camilla, Ursula, Eugenia, Hermione, Aurora, Daphne, Bertha, Aegle, Palma, Metis, Alauda, Hilda |
+ roughly 200 Main belt asteroids bigger than 100 km |
Chariklo 296 × 264 × 204 km |
Chiron ~ 200 km |
Bienor ~ 200 km |
Pholus ~ 310 × 150 km |
& |
roughly 40 known centaurs bigger than 100 km |
Larissa (♆) 216 × 204 × 168 km |
Janus (♄) 203 × 185 × 153 km |
Amalthea (♃) 250 × 146 × 128 km |
Puck (♅) ~ 160 km |
Epimetheus (♄) 130 × 114 × 106 km |
Thebe (♃) 116 × 98 × 84 km |
Prometheus (♄) 136 × 79 × 59 km |
Pandora (♄) 104 × 81 × 64 km |
& |
S2018(F), S2015(M), Xiangliu(G), Galatea(♆), Himalia(♃), Namaka(H), Sycorax(♅), Despina(♆), Portia(♅), Juliet(♅), Thalassa(♆), Belinda(♅), Elara(♃), Cressida(♅) |
Hektor ~ 220 & 180 km |
Agamemnon ~ 190 × 140 km |
Patroclus 127 × 117 × 98 km |
Menoetius 117 × 108 × 90 km |
Eurybates ~ 64 km |
Orus ~ 51 km |
Leucus ~ 34 km |
Polymele ~ 21 km |
& |
satellites: Skamandrios(He), S2012(Ag), S2022(Po), Queta(Eu), ... |
+ roughly 550 Jovian trojans bigger than 20 km |
Lutetia 121 × 101 × 75 km |
Justitia ~ 54 km |
Mathilde 66 × 48 × 46 km |
Ida 60 × 25 × 19 km |
Chimaera ~ 44 km |
Gaspra 18 × 11 × 9 km |
& |
roughly 2100 Main belt asteroids bigger than 20 km |
Metis (♃) 60 × 40 × 34 km |
Hydra (♇) 51 × 36 × 31 km |
Nix (♇) 50 × 33 × 31 km |
Helene (♄) 45 × 39 × 26 km |
Atlas (♄) 41 × 35 × 19 km |
Pan (♄) 35 × 28 × 21 km |
Telesto (♄) 33 × 23 × 19 km |
Calypso (♄) 29 × 19 × 13 km |
Phobos (♂) 26 × 23 × 18 km |
Deimos (♂) 15 × 12 × 11 km |
Kerberos (♇) 19 × 10 × 9 km |
Styx (♇) 16 × 9 × 8 km |
& |
S2005(A), Rosalind(♅), Desdemona(♅), Halimede(♆), Naiad(♆), Neso(♆), Pasiphae(♃), Bianca(♅), Prospero(♅), Setebos(♅), Carme(♃), Sao(♆), Ophelia(♅), Lysithea(♃), |
Caliban(♅), Laomedeia(♆), Cordelia(♅), Psamathe(♆), Siarnaq(♄), Sinope(♃), Hippocamp(♆), Stephano(♅), Ananke(♃), Albiorix(♄), Perdita(♅), Paaliaq(♄), |
Francisco(♅), Leda(♃), Ferdinand(♅), Margaret(♅), Ymir(♄), Trinculo(♅), Cupid(♅), Adrastea(♃), Kiviuq(♄), Tarvos(♄), Ijiraq(♄), Erriapus(♄) |
Arrokoth 21×20×9 & 15×14×10 km |
& |
more than 4000 known trans-Neptunians | milions more are estimated to exist |
Daphnis (♄) 9 × 8 × 6 km |
Pallene (♄) 6 × 4 × 4 km |
Methone (♄) 4 × 3 × 2 km |
Polydeuces (♄) 3 × 3 × 2 km |
Anthe (♄) ~ 1.8 km |
Aegaeon (♄) 1.4 × 0.5 × 0.4 km |
& |
Mab(♅), Callirrhoe(♃), Skathi(♄), Hyrrokin(♄), Themisto(♃), Praxidike(♃), Bestla(♄), Tarqeq(♄), Mundilfari(♄), Narvi(♄), Suttungr(♄), Thrymr(♄), Kari(♄), Megaclite(♃), |
Bebhionn(♄), Skoll(♄), Greip(♄), Jarnsaxa(♄), Bergelmir(♄), Hati(♄), Aegir(♄), Surtur(♄), Loge(♄), Fornjot(♄), Iocaste(♃), Taygete(♃), Kalyke(♃), Farbauti(♄), Fenrir(♄) |
+ roughly 165 known moons smaller than 5 km |
1999 SG6 ~ 8 km |
1998 RC76 ~ 7 km |
Šteins 7 × 6 × 4 km |
Annefrank 7 × 5 × 3 km |
2000 VA28 ~ 5 km |
Rockox ~ 5 km |
Donaldjohanson ~ 4 km |
Westerwald ~ 2 km |
Braille ~ 2 × 1 km |
Dactyl (Ida) 1.6 × 1.4 × 1.2 km |
Dinkinesh ~ 0.7 km |
S2023Dinkinesh1 ~ 0.2 & 0.2 km |
& |
roughly 90 000 Main belt asteroids >5 km | 750 000 >1 km | 25 000 000 >0.1 km |
+ satellites: Linus, Petit-Prince, Romulus, Alexhelios, Remus, Cleoselene, S2003Elektra1, |
S2004Eugenia1, S2019Euphrosyne1, Pichi üñëm, S2014Elektra1, S2014Elektra2, Peneius, ... |
Halley 15 × 8 × 8 km |
Tempel 1 8 × 5 × 5 km |
Borrelly 8 × 4 × 4 km |
Wild 2 6 × 4 × 3 km |
Churyumov-Gerasimenko 4×3×2 & 3×2×2 km |
Hartley 2 2 × 1 × 1 km |
289P/Blanpain ~ 2 km |
311P/PANSTARRS ~ 0.5 km |
& |
almost 400 numbered comets | thousands known comets | probably trillion(s) dormant comets |
Eros 34 × 11 × 11 km |
1999 JM8 ~ 6 km | Phaethon ~ 6 km |
Florence & °° ~ 4.4 & 0.3 & 0.2 km |
Toutatis 4.7 × 2.4 × 2 km |
Heracles & ° ~ 3.6 & 0.6 km |
Tantalus ~ 3 km |
1996 FG3 & ° ~ 1.7 & 0.3 km |
Moshup & Squannit ~ 1.3 & 0.4 km |
2005 UD ~ 1.3 km |
Ryugu 0.9 km |
Didymos 0.8 km |
2001 CC21 ~ 0.5 km |
Bennu 0.5 km |
Itokawa 0.5 × 0.3 × 0.2 km |
Apophis ~ 0.4 × 0.2 km |
Dimorphos (Didymos) 0.16 km |
Kamo'oalewa ~ 0.05 km |
2019 VL5 ~ 0.03 km |
1998 KY26 ~ 0.03 km |
& |
roughly 930 Near-Earth asteroids >1 km | 30 000 >0.1 km | probably something in order of billion(s) of meter-sized NEAs |
Year | Object | Class | Group | Spectral type | Size | Spacecraft |
2025 | Donaldjohanson | MBA | Erigone family | C | 4 km | Lucy (NASA) |
2026 | Kamo'oalewa | quasi-satellite | Apollo | ? | 50 m | Tianwen-2 (CNSA) |
2026 | 2001 CC21 | NEA | Apollo | S | 0.5 km | Hayabusa2♯ (JAXA) |
2027 | 2019 VL5 | NEA | Aten | ? | 30 m | ADM (CNSA) |
2027 | Eurybates & Queta | Jovian trojan | leading | C | 60 km & 1 km | Lucy (NASA) |
2027 | Polymele & ° | Jovian trojan | leading | P | 20 km & 5 km | Lucy (NASA) |
2028 | Phaethon | NEA | Apollo/active | B | 6 km | DESTINY+ (JAXA) |
2028 | Leucus | Jovian trojan | leading | D | 30 km | Lucy (NASA) |
2028 | Orus | Jovian trojan | leading | D | 50 km | Lucy (NASA) |
2028 | 2005 UD | NEA | Apollo | B/C | 1.3 km | DESTINY+ (JAXA) |
2029 | Psyche | MBA | metallic | M | 230 km | Psyche (NASA) |
2029 | Apophis | NEA | Aten | Sq | 0.4 km | OSIRIS-APEX (NASA) |
2030 | Westerwald | MBA | ? | 2 km | MBR Explorer (UAE) | |
2030 | Chimaera | MBA | Chimaera family | Xc | 44 km | MBR Explorer (UAE) |
2031 | Rockox | MBA | ? | 5 km | MBR Explorer (UAE) | |
2031 | 1998 KY26 | NEA | Apollo | X | 30 m | Hayabusa2♯ (JAXA) |
2032 | 2000 VA28 | MBA | ? | 5 km | MBR Explorer (UAE) | |
2032 | 1998 RC76 | MBA | ? | 7 km | MBR Explorer (UAE) | |
2033 | 1999 SG6 | MBA | ? | 8 km | MBR Explorer (UAE) | |
2033 | Patroclus & Menoetius | Jovian trojan | trailing | P | 113 km & 104 km | Lucy (NASA) |
2034 | 311P/PANSTARRS | MBA | active | ? | 0.5 km | Tianwen-2 (CNSA) |
2034 | Heracles & ° | NEA | Apollo | O | 3.6 km & 0.6 km | DESTINY+ (JAXA) |
2034 | Justitia | MBA | very red | D | 54 km | MBR Explorer (UAE) |
2035 | 289P/Blanpain | comet | short-period | ? | 2 km | DESTINY+ (JAXA) |
2038 | Tantalus | NEA | Apollo | Q | 3 km | DESTINY+ (JAXA) |