Giant-planet moons ** Numbers of Giant-Planet Moons ** ** 2- to 5-letter TD abbreviations and JPL/SPICE numbers ** 19 Aug 2025 | Tilmann Denk -------------------------------------------------------------------------- ** Table: Numbers of Giant-Planet Moons ** -------- + --- + --- + ----- ------------ | Tot | reg.| Irreg. (pro|retro) -------- + --- + --- + ----- ------------ | 416 | 59 | 357 (71 | 286) Jupiter | 97 | 8 | 89 (13 | 76) Saturn | 274 | 24 | 250 (53 | 197) Uranus | 29 | 19 | 10 ( 1 | 9) Neptune | 16 | 7+1 | 8 ( 4 | 4) -------- + --- + --- + ----- ------------ Tot ....... total numbers reg. ...... regular moon Irreg. .... Irregular moon pro ....... prograde (direct) orbit retro ..... retrograde orbit -------------------------------------------------------------------------- ** Table: Numbers of Giant-Planet Moons by Discovery Announcement Years ** --------- + ----- + --------------- + --------------------------- Year | #ofM | J S U N | Major discovery tool --------- + ----- + --------------- + --------------------------- 1610-1892 | 18 | 5 8 4 1 | Telescope eyepiece 1899-1974 | 12 | 8 2 1 1 | Photographic plates 1979-1990 | 28 | 3 8 11 6 | Voyager 1+2 (Vidicon) 1997-2012 | 112 | 51 44 11 6 | CCD; fast computers 2017- | 246 | 30 212 2 2 | CCD; shift'n'stack; archive --------- + ----- + --------------- + --------------------------- Total | 416 | 97 274 29 16 | Ingenious smart people --------- + ----- + --------------- + --------------------------- #ofM ...... total number of moon discovery announcements in this time frame J S U N ... Jupiter Saturn Uranus Neptune -------------------------------------------------------------------------- ** Table: Two- to 5-letter TD abbreviations and JPL/SPICE numbers ** Pla ...... Planet (J S U N) Y-of-A ... Year of announcement for 2017 and later * ........ regular moon + ........ Triton --- ------------- ----------- ------- ------ ------ Provisional TD SPICE Pla Name designation abbrev. JPL ID Y-of-A --- ------------- ----------- ------- ------ ------ J * Adrastea S/1979 J 1 Adr 515 S * Aegaeon S/2008 S 1 Agn 653 S Aegir S/2004 S 10 Aeg 636 J Aitne S/2001 J 11 Ait 531 S Albiorix S/2000 S 11 Alb 626 S Alvaldi S/2004 S 35 Alv 665 [2019] J * Amalthea Ama 505 J Ananke Ana 512 S Angrboda S/2004 S 22 Ang 655 [2019] S * Anthe S/2007 S 4 Ant 649 J Aoede S/2003 J 7 Aoe 541 J Arche S/2002 J 1 Arc 543 U * Ariel Ar Ari 701 S * Atlas S/1980 S 28 Atl 615 J Autonoe S/2001 J 1 Aut 528 S Bebhionn S/2004 S 11 Beb 637 S Beli S/2004 S 30 Bli 661 [2019] U * Belinda S/1986 U 5 Bld 714 S Bergelmir S/2004 S 15 Ber 638 S Bestla S/2004 S 18 Bes 639 U * Bianca S/1986 U 9 Bia 708 U Caliban S/1997 U 1 Clb 716 J Callirrhoe S/1999 J 1 Clh 517 J * Callisto Ca Cal 504 S * Calypso S/1980 S 25 Clp 614 J Carme Car 511 J Carpo S/2003 J 20 Crp 546 J Chaldene S/2000 J 10 Cha 521 U * Cordelia S/1986 U 7 Cor 706 U * Cressida S/1986 U 3 Cre 709 U * Cupid S/2003 U 2 Cup 727 J Cyllene S/2003 J 13 Cyl 548 S * Daphnis S/2005 S 1 Dap 635 U * Desdemona S/1986 U 6 Des 710 N * Despina S/1989 N 3 Dsp 805 J Dia S/2000 J 11 Dia 553 S * Dione Di Dio 604 S Eggther S/2004 S 27 Egg 659 [2019] J Eirene S/2003 J 5 Eir 557 J Elara Ela 507 S * Enceladus En Enc 602 S * Epimetheus S/1980 S 3 Epi 611 J Erinome S/2000 J 4 Eri 525 S Erriapus S/2000 S 10 Err 628 J Ersa S/2018 J 1 Ers 571 [2018] J Euanthe S/2001 J 7 Eua 533 J Eukelade S/2003 J 1 Euk 547 J Eupheme S/2003 J 3 Eph 560 J Euporie S/2001 J 10 Eup 534 J * Europa Eu Eur 502 J Eurydome S/2001 J 4 Eyd 532 S Farbauti S/2004 S 9 Far 640 S Fenrir S/2004 S 16 Fen 641 U Ferdinand S/2001 U 2 Fer 724 S Fornjot S/2004 S 8 For 642 U Francisco S/2001 U 3 Fra 722 N * Galatea S/1989 N 4 Gal 806 J * Ganymede Ga Gan 503 S Geirrod S/2004 S 38 Gei 666 [2019] S Gerd S/2004 S 25 Ger 657 [2019] S Greip S/2006 S 4 Gre 651 S Gridr S/2004 S 20 Gri 654 [2019] S Gunnlod S/2004 S 32 Gun 662 [2019] N Halimede S/2002 N 1 Hal 809 J Harpalyke S/2000 J 5 Har 522 S Hati S/2004 S 14 Hat 643 J Hegemone S/2003 J 8 Heg 539 S * Helene S/1980 S 6 Hel 612 J Helike S/2003 J 6 Hlk 545 J Hermippe S/2001 J 3 Her 530 J Herse S/2003 J 17 Hrs 550 J Himalia Him 506 N * Hippocamp S/2004 N 1 Hip 814 S * Hyperion Hy Hyp 607 S Hyrrokkin S/2004 S 19 Hyr 644 S * Iapetus Ia Iap 608 S Ijiraq S/2000 S 6 Iji 622 J * Io Io 501 J Iocaste S/2000 J 3 Ioc 524 J Isonoe S/2000 J 6 Iso 526 S * Janus S/1966 S 2 Jan 610 S Jarnsaxa S/2006 S 6 Jar 650 U * Juliet S/1986 U 2 Jul 711 J Kale S/2001 J 8 Kle 537 J Kallichore S/2003 J 11 Kch 544 J Kalyke S/2000 J 2 Klk 523 S Kari S/2006 S 2 Kar 645 S Kiviuq S/2000 S 5 Kiv 624 J Kore S/2003 J 14 Kor 549 N Laomedeia S/2002 N 3 Lao 812 N * Larissa S/1989 N 2 Lar 807 J Leda Led 513 S Loge S/2006 S 5 Log 646 J Lysithea Lys 510 U * Mab S/2003 U 1 Mab 726 U Margaret S/2003 U 3 Mar 723 J Megaclite S/2000 J 8 Meg 519 S * Methone S/2004 S 1 Mth 632 J * Metis S/1979 J 3 Met 516 S * Mimas Mi Mim 601 U * Miranda Mir 705 J Mneme S/2003 J 21 Mne 540 S Mundilfari S/2000 S 9 Mun 625 N * Naiad S/1989 N 6 Nai 803 S Narvi S/2003 S 1 Nar 631 N Nereid Ner 802 N Neso S/2002 N 4 Nes 813 U * Oberon Ob Obe 704 U * Ophelia S/1986 U 8 Oph 707 J Orthosie S/2001 J 9 Ort 535 S Paaliaq S/2000 S 2 Paa 620 S * Pallene S/2004 S 2 Pal 633 S * Pan S/1981 S 13 Pan 618 J Pandia S/2017 J 4 Pdi 565 [2018] S * Pandora S/1980 S 26 Pnd 617 J Pasiphae 1908 CJ Pas 508 J Pasithee S/2001 J 6 Pst 538 U * Perdita S/1986 U 10 Per 725 J Philophrosyne S/2003 J 15 Phi 558 S Phoebe Pho 609 S * Polydeuces S/2004 S 5 Pol 634 U * Portia S/1986 U 1 Por 712 J Praxidike S/2000 J 7 Pra 527 S * Prometheus S/1980 S 27 Pro 616 U Prospero S/1999 U 3 Prs 718 N * Proteus S/1989 N 1 Prt 808 N Psamathe S/2003 N 1 Psa 810 U * Puck S/1985 U 1 Puc 715 S * Rhea Rh Rhe 605 U * Rosalind S/1986 U 4 Ros 713 N Sao S/2002 N 2 Sao 811 U Setebos S/1999 U 1 Set 719 S Siarnaq S/2000 S 3 Sia 629 J Sinope Sin 509 S Skathi S/2000 S 8 Ska 627 S Skoll S/2006 S 8 Sko 647 S Skrymir S/2004 S 23 Skr 656 [2019] J Sponde S/2001 J 5 Spo 536 U Stephano S/1999 U 2 Ste 720 S Surtur S/2006 S 7 Sur 648 S Suttungr S/2000 S 12 Sut 623 U Sycorax S/1997 U 2 Syc 717 S Tarqeq S/2007 S 1 Taq 652 S Tarvos S/2000 S 4 Tar 621 J Taygete S/2000 J 9 Tay 520 S * Telesto S/1980 S 13 Tel 613 S * Tethys Te Tet 603 N * Thalassa S/1989 N 5 Tha 804 J * Thebe S/1979 J 2 The 514 J Thelxinoe S/2003 J 22 Tlx 542 J Themisto S/2000 J 1 Thm 518 S Thiazzi S/2004 S 33 Thi 663 [2019] S Thrymr S/2000 S 7 Thr 630 J Thyone S/2001 J 2 Thy 529 S * Titan Ti Tit 606 U * Titania Tt Tia 703 U Trinculo S/2001 U 1 Trn 721 N + Triton Tr Tri 801 U * Umbriel Um Umb 702 J Valetudo S/2016 J 2 Val 562 [2018] S Ymir S/2000 S 1 Ymi 619 --- ------------- ----------- ------- ------ ------ J S/2003 J 2 3J2 55501 J S/2003 J 4 3J4 55502 J S/2003 J 9 3J9 55503 J S/2003 J 10 3J10 55504 J S/2003 J 12 3J12 55505 J S/2003 J 16 3J16 55506 J Jupiter LV S/2003 J 18 3J18 555 J Jupiter LXI S/2003 J 19 3J19 561 J S/2003 J 23 3J23 55507 J S/2003 J 24 3J24 55508 [2021] J Jupiter LI S/2010 J 1 10J1 551 J Jupiter LII S/2010 J 2 10J2 552 J Jupiter LXXII S/2011 J 1 11J1 572 J Jupiter LVI S/2011 J 2 11J2 556 J S/2011 J 3 11J3 55509 [2022] J Jupiter LIV S/2016 J 1 16J1 554 [2017] J S/2016 J 3 16J3 55518 [2023] J S/2016 J 4 16J4 55519 [2023] J Jupiter LIX S/2017 J 1 17J1 559 [2017] J Jupiter LXIII S/2017 J 2 17J2 563 [2018] J Jupiter LXIV S/2017 J 3 17J3 564 [2018] J Jupiter LXVI S/2017 J 5 17J5 566 [2018] J Jupiter LXVII S/2017 J 6 17J6 567 [2018] J Jupiter LXVIII S/2017 J 7 17J7 568 [2018] J Jupiter LXIX S/2017 J 8 17J8 569 [2018] J Jupiter LXX S/2017 J 9 17J9 570 [2018] J S/2017 J 10 17J10 55525 [2025] J S/2017 J 11 17J11 55526 [2025] J S/2018 J 2 18J2 55510 [2022] J S/2018 J 3 18J3 55511 [2023] J S/2018 J 4 18J4 55520 [2023] J S/2021 J 1 21J1 55512 [2023] J S/2021 J 2 21J2 55513 [2023] J S/2021 J 3 21J3 55514 [2023] J S/2021 J 4 21J4 55515 [2023] J S/2021 J 5 21J5 55516 [2023] J S/2021 J 6 21J6 55517 [2023] J S/2022 J 1 22J1 55521 [2023] J S/2022 J 2 22J2 55522 [2023] J S/2022 J 3 22J3 55523 [2023] --- ------------- ----------- ------- ------ ------ S S/2004 S 7 4S7 65085 S S/2004 S 12 4S12 65086 S S/2004 S 13 4S13 65087 S S/2004 S 17 4S17 65088 S S/2004 S 21 4S21 65079 [2019] S S/2004 S 24 4S24 65070 [2019] S Saturn LVIII S/2004 S 26 4S26 658 [2019] S S/2004 S 28 4S28 65077 [2019] S Saturn LX S/2004 S 29 4S29 660 [2019] S S/2004 S 31 4S31 65067 [2019] S Saturn LXIV S/2004 S 34 4S34 664 [2019] S S/2004 S 36 4S36 65081 [2019] S S/2004 S 37 4S37 65082 [2019] S S/2004 S 39 4S39 65084 [2019] S S/2004 S 40 4S40 65098 [2023] S S/2004 S 41 4S41 65104 [2023] S S/2004 S 42 4S42 65108 [2023] S S/2004 S 43 4S43 65111 [2023] S S/2004 S 44 4S44 65112 [2023] S S/2004 S 45 4S45 65113 [2023] S S/2004 S 46 4S46 65121 [2023] S S/2004 S 47 4S47 65123 [2023] S S/2004 S 48 4S48 65139 [2023] S S/2004 S 49 4S49 65141 [2023] S S/2004 S 50 4S50 65142 [2023] S S/2004 S 51 4S51 65150 [2023] S S/2004 S 52 4S52 65152 [2023] S S/2004 S 53 4S53 65154 [2023] S S/2004 S 54 4S54 65158 [2025] S S/2004 S 55 4S55 65159 [2025] S S/2004 S 56 4S56 65160 [2025] S S/2004 S 57 4S57 65161 [2025] S S/2004 S 58 4S58 65162 [2025] S S/2004 S 59 4S59 65163 [2025] S S/2004 S 60 4S60 65164 [2025] S S/2004 S 61 4S61 65165 [2025] S S/2005 S 4 5S4 65129 [2023] S S/2005 S 5 5S5 65135 [2023] S S/2005 S 6 5S6 65166 [2025] S S/2005 S 7 5S7 65167 [2025] S S/2006 S 1 6S1 65089 S S/2006 S 3 6S3 65090 S S/2006 S 9 6S9 65100 [2023] S S/2006 S 10 6S10 65109 [2023] S S/2006 S 11 6S11 65114 [2023] S S/2006 S 12 6S12 65115 [2023] S S/2006 S 13 6S13 65117 [2023] S S/2006 S 14 6S14 65125 [2023] S S/2006 S 15 6S15 65136 [2023] S S/2006 S 16 6S16 65137 [2023] S S/2006 S 17 6S17 65138 [2023] S S/2006 S 18 6S18 65143 [2023] S S/2006 S 19 6S19 65149 [2023] S S/2006 S 20 6S20 65157 [2023] S S/2006 S 21 6S21 65168 [2025] S S/2006 S 22 6S22 65169 [2025] S S/2006 S 23 6S23 65170 [2025] S S/2006 S 24 6S24 65171 [2025] S S/2006 S 25 6S25 65172 [2025] S S/2006 S 26 6S26 65173 [2025] S S/2006 S 27 6S27 65174 [2025] S S/2006 S 28 6S28 65175 [2025] S S/2006 S 29 6S29 65176 [2025] S S/2007 S 2 7S2 65091 S S/2007 S 3 7S3 65092 S S/2007 S 5 7S5 65101 [2023] S S/2007 S 6 7S6 65107 [2023] S S/2007 S 7 7S7 65130 [2023] S S/2007 S 8 7S8 65131 [2023] S S/2007 S 9 7S9 65153 [2023] S S/2007 S 10 7S10 65177 [2025] S S/2007 S 11 7S11 65178 [2025] S * S/2009 S 1 9S1 -- [B-ring moon] S S/2019 S 1 19S1 65093 [2021] S S/2019 S 2 19S2 65094 [2023] S S/2019 S 3 19S3 65095 [2023] S S/2019 S 4 19S4 65103 [2023] S S/2019 S 5 19S5 65110 [2023] S S/2019 S 6 19S6 65116 [2023] S S/2019 S 7 19S7 65118 [2023] S S/2019 S 8 19S8 65119 [2023] S S/2019 S 9 19S9 65120 [2023] S S/2019 S 10 19S10 65122 [2023] S S/2019 S 11 19S11 65124 [2023] S S/2019 S 12 19S12 65126 [2023] S S/2019 S 13 19S13 65128 [2023] S S/2019 S 14 19S14 65133 [2023] S S/2019 S 15 19S15 65134 [2023] S S/2019 S 16 19S16 65144 [2023] S S/2019 S 17 19S17 65145 [2023] S S/2019 S 18 19S18 65146 [2023] S S/2019 S 19 19S19 65147 [2023] S S/2019 S 20 19S20 65148 [2023] S S/2019 S 21 19S21 65156 [2023] S S/2019 S 22 19S22 65179 [2025] S S/2019 S 23 19S23 65180 [2025] S S/2019 S 24 19S24 65181 [2025] S S/2019 S 25 19S25 65182 [2025] S S/2019 S 26 19S26 65183 [2025] S S/2019 S 27 19S27 65184 [2025] S S/2019 S 28 19S28 65185 [2025] S S/2019 S 29 19S29 65186 [2025] S S/2019 S 30 19S30 65187 [2025] S S/2019 S 31 19S31 65188 [2025] S S/2019 S 32 19S32 65189 [2025] S S/2019 S 33 19S33 65190 [2025] S S/2019 S 34 19S34 65191 [2025] S S/2019 S 35 19S35 65192 [2025] S S/2019 S 36 19S36 65193 [2025] S S/2019 S 37 19S37 65194 [2025] S S/2019 S 38 19S38 65195 [2025] S S/2019 S 39 19S39 65196 [2025] S S/2019 S 40 19S40 65197 [2025] S S/2019 S 41 19S41 65198 [2025] S S/2019 S 42 19S42 65199 [2025] S S/2019 S 43 19S43 65200 [2025] S S/2019 S 44 19S44 65201 [2025] S S/2020 S 1 20S1 65096 [2023] S S/2020 S 2 20S2 65097 [2023] S S/2020 S 3 20S3 65102 [2023] S S/2020 S 4 20S4 65105 [2023] S S/2020 S 5 20S5 65106 [2023] S S/2020 S 6 20S6 65127 [2023] S S/2020 S 7 20S7 65132 [2023] S S/2020 S 8 20S8 65140 [2023] S S/2020 S 9 20S9 65151 [2023] S S/2020 S 10 20S10 65155 [2023] S S/2020 S 11 20S11 65202 [2025] S S/2020 S 12 20S12 65203 [2025] S S/2020 S 13 20S13 65204 [2025] S S/2020 S 14 20S14 65205 [2025] S S/2020 S 15 20S15 65206 [2025] S S/2020 S 16 20S16 65207 [2025] S S/2020 S 17 20S17 65208 [2025] S S/2020 S 18 20S18 65209 [2025] S S/2020 S 19 20S19 65210 [2025] S S/2020 S 20 20S20 65211 [2025] S S/2020 S 21 20S21 65212 [2025] S S/2020 S 22 20S22 65213 [2025] S S/2020 S 23 20S23 65214 [2025] S S/2020 S 24 20S24 65215 [2025] S S/2020 S 25 20S25 65216 [2025] S S/2020 S 26 20S26 65217 [2025] S S/2020 S 27 20S27 65218 [2025] S S/2020 S 28 20S28 65219 [2025] S S/2020 S 29 20S29 65220 [2025] S S/2020 S 30 20S30 65221 [2025] S S/2020 S 31 20S31 65222 [2025] S S/2020 S 32 20S32 65223 [2025] S S/2020 S 33 20S33 65224 [2025] S S/2020 S 34 20S34 65225 [2025] S S/2020 S 35 20S35 65226 [2025] S S/2020 S 36 20S36 65227 [2025] S S/2020 S 37 20S37 65228 [2025] S S/2020 S 38 20S38 65229 [2025] S S/2020 S 39 20S39 65230 [2025] S S/2020 S 40 20S40 65231 [2025] S S/2020 S 41 20S41 65232 [2025] S S/2020 S 42 20S42 65233 [2025] S S/2020 S 43 20S43 65234 [2025] S S/2020 S 44 20S44 65235 [2025] S S/2023 S 1 23S1 65236 [2025] S S/2023 S 2 23S2 65237 [2025] S S/2023 S 3 23S3 65238 [2025] S S/2023 S 4 23S4 65239 [2025] S S/2023 S 5 23S5 65240 [2025] S S/2023 S 6 23S6 65241 [2025] S S/2023 S 7 23S7 65242 [2025] S S/2023 S 8 23S8 65243 [2025] S S/2023 S 9 23S9 65244 [2025] S S/2023 S 10 23S10 65245 [2025] S S/2023 S 11 23S11 65246 [2025] S S/2023 S 12 23S12 65247 [2025] S S/2023 S 13 23S13 65248 [2025] S S/2023 S 14 23S14 65249 [2025] S S/2023 S 15 23S15 65250 [2025] S S/2023 S 16 23S16 65251 [2025] S S/2023 S 17 23S17 65252 [2025] S S/2023 S 18 23S18 65253 [2025] S S/2023 S 19 23S19 65254 [2025] S S/2023 S 20 23S20 65255 [2025] S S/2023 S 21 23S21 65256 [2025] S S/2023 S 22 23S22 65257 [2025] S S/2023 S 23 23S23 65258 [2025] S S/2023 S 24 23S24 65259 [2025] S S/2023 S 25 23S25 65260 [2025] S S/2023 S 26 23S26 65261 [2025] S S/2023 S 27 23S27 65262 [2025] S S/2023 S 28 23S28 65263 [2025] S S/2023 S 29 23S29 65264 [2025] S S/2023 S 30 23S30 65265 [2025] S S/2023 S 31 23S31 65266 [2025] S S/2023 S 32 23S32 65267 [2025] S S/2023 S 33 23S33 65268 [2025] S S/2023 S 34 23S34 65269 [2025] S S/2023 S 35 23S35 65270 [2025] S S/2023 S 36 23S36 65271 [2025] S S/2023 S 37 23S37 65272 [2025] S S/2023 S 38 23S38 65273 [2025] S S/2023 S 39 23S39 65274 [2025] S S/2023 S 40 23S40 65275 [2025] S S/2023 S 41 23S41 65276 [2025] S S/2023 S 42 23S42 65277 [2025] S S/2023 S 43 23S43 65278 [2025] S S/2023 S 44 23S44 65279 [2025] S S/2023 S 45 23S45 65280 [2025] S S/2023 S 46 23S46 65281 [2025] S S/2023 S 47 23S47 65282 [2025] S S/2023 S 48 23S48 65283 [2025] S S/2023 S 49 23S49 65284 [2025] S S/2023 S 50 23S50 65285 [2025] --- ------------- ----------- ------- ------ ------ U S/2023 U 1 23U1 75051 [2024] U * S/2025 U 1 25U1 [2025] --- ------------- ----------- ------- ------ ------ N S/2002 N 5 2N5 85051 [2024] N S/2021 N 1 21N1 85052 [2024] --- ------------- ----------- ------- ------ ------ --------------------------------------------------------------------------