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Planetary Satellite Ephemerides

The following tables list the current JPL planetary satellite ephemeris used for each planetary satellite. These ephemerides are used by Horizons to provide high-precision ephemerides for the planetary satellites. Tables are grouped by planet (and category of satellite for planets with many satellites).

Martian Satellites

Satellite Code Ephemeris Ref.
Phobos 401 MAR099 7
Deimos 402 MAR099 7

Jovian Regular Satellites

Satellite Code Ephemeris Ref.
Io 501 JUP365 29
Europa 502 JUP365 29
Ganymede 503 JUP365 29
Callisto 504 JUP365 29
Amalthea 505 JUP365 29
Thebe 514 JUP365 29
Adrastea 515 JUP365 29
Metis 516 JUP365 29

Jovian Irregular Satellites

Satellite Code Ephemeris Ref.
Himalia 506 JUP347 47
Elara 507 JUP347 47
Pasiphae 508 JUP347 47
Sinope 509 JUP347 47
Lysithea 510 JUP347 47
Carme 511 JUP347 47
Ananke 512 JUP347 47
Leda 513 JUP347 47
Callirrhoe 517 JUP347 47
Themisto 518 JUP347 47
Megaclite 519 JUP347 47
Taygete 520 JUP347 47
Chaldene 521 JUP347 47
Harpalyke 522 JUP347 47
Kalyke 523 JUP347 47
Iocaste 524 JUP347 47
Erinome 525 JUP347 47
Isonoe 526 JUP347 47
Praxidike 527 JUP347 47
Autonoe 528 JUP347 47
Thyone 529 JUP347 47
Hermippe 530 JUP347 47
Aitne 531 JUP347 47
Eurydome 532 JUP347 47
Euanthe 533 JUP347 47
Euporie 534 JUP347 47
Orthosie 535 JUP347 47
Sponde 536 JUP347 47
Kale 537 JUP347 47
Pasithee 538 JUP347 47
Hegemone 539 JUP347 47
Mneme 540 JUP347 47
Aoede 541 JUP347 47
Thelxinoe 542 JUP347 47
Arche 543 JUP347 47
Kallichore 544 JUP347 47
Helike 545 JUP347 47
Carpo 546 JUP347 47
Eukelade 547 JUP347 47
Cyllene 548 JUP347 47
Kore 549 JUP347 47
Herse 550 JUP347 47
S2010_J_1 551 JUP347 47
S2010_J_2 552 JUP347 47
Dia 553 JUP347 47
S2016_J_1 554 JUP347 47
S2003_J_18 555 JUP347 47
S2011_J_2 556 JUP347 47
Eirene 557 JUP347 47
Philophrosyne 558 JUP347 47
S2017_J_1 559 JUP347 47
Eupheme 560 JUP347 47
S2003_J_19 561 JUP347 47
Valetudo 562 JUP347 47
S2017_J_2 563 JUP347 47
S2017_J_3 564 JUP347 47
Pandia 565 JUP347 47
S2017_J_5 566 JUP347 47
S2017_J_6 567 JUP347 47
S2017_J_7 568 JUP347 47
S2017_J_8 569 JUP347 47
S2017_J_9 570 JUP347 47
Ersa 571 JUP347 47
S2011_J_1 572 JUP347 47
S2003_J_2 55501 JUP347 47
S2003_J_4 55502 JUP347 47
S2003_J_9 55503 JUP347 47
S2003_J_10 55504 JUP347 47
S2003_J_12 55505 JUP347 47
S2003_J_16 55506 JUP347 47
S2003_J_23 55507 JUP347 47
S2003_J_24 55508 JUP347 47
S2011_J_3 55509 JUP347 47
S2018_J_2 55510 JUP347 47
S2018_J_3 55511 JUP347 47
S2021_J_1 55512 JUP347 47
S2021_J_2 55513 JUP347 47
S2021_J_3 55514 JUP347 47
S2021_J_4 55515 JUP347 47
S2021_J_5 55516 JUP347 47
S2021_J_6 55517 JUP347 47
S2016_J_3 55518 JUP347 47
S2016_J_4 55519 JUP347 47
S2018_J_4 55520 JUP347 47
S2022_J_1 55521 JUP347 47
S2022_J_2 55522 JUP347 47
S2022_J_3 55523 JUP347 47
S2017_J_10 55525 JUP347 47
S2017_J_11 55526 JUP347 47
S2011_J_4 55527 JUP348 51
S2018_J_5 55528 JUP348 51
S2024_J_1 55529 JUP348 51
S2011_J_5 55530 JUP348 51

Saturnian Regular Satellites

Satellite Code Ephemeris Ref.
Mimas 601 SAT441 36
Enceladus 602 SAT441 36
Tethys 603 SAT441 36
Dione 604 SAT441 36
Rhea 605 SAT441 36
Titan 606 SAT441 36
Hyperion 607 SAT441 36
Iapetus 608 SAT441 36
Methone 632 SAT441 36
Helene 612 SAT441 36
Telesto 613 SAT441 36
Calypso 614 SAT441 36
Polydeuces 634 SAT441 36
Phoebe 609 SAT441 36

Saturnian Inner Satellites

Satellite Code Ephemeris Ref.
Janus 610 SAT415 17
Epimetheus 611 SAT415 17
Atlas 615 SAT415 17
Prometheus 616 SAT415 17
Pandora 617 SAT415 17
Pan 618 SAT415 17
Pallene 633 SAT415 17
Anthe 649 SAT415 17
Aegaeon 653 SAT415 17
Daphnis 635 SAT415 17

Saturnian Irregular Satellites

Satellite Code Ephemeris Ref.
Ymir 619 SAT456 48
Paaliaq 620 SAT456 48
Tarvos 621 SAT456 48
Ijiraq 622 SAT456 48
Suttungr 623 SAT456 48
Kiviuq 624 SAT456 48
Mundilfari 625 SAT456 48
Albiorix 626 SAT456 48
Skadi 627 SAT456 48
Erriapus 628 SAT456 48
Siarnaq 629 SAT456 48
Thrymr 630 SAT456 48
Narvi 631 SAT456 48
Aegir 636 SAT456 48
Bebhionn 637 SAT456 48
Bergelmir 638 SAT456 48
Bestla 639 SAT456 48
Farbauti 640 SAT456 48
Fenrir 641 SAT456 48
Fornjot 642 SAT456 48
Hati 643 SAT456 48
Hyrrokkin 644 SAT456 48
Kari 645 SAT456 48
Loge 646 SAT456 48
Skoll 647 SAT456 48
Surtur 648 SAT456 48
Jarnsaxa 650 SAT456 48
Greip 651 SAT456 48
Tarqeq 652 SAT456 48
Gridr 654 SAT456 48
Angrboda 655 SAT456 48
Skrymir 656 SAT456 48
Gerd 657 SAT456 48
S2004_S_26 658 SAT456 48
Eggther 659 SAT456 48
S2004_S_29 660 SAT456 48
Beli 661 SAT456 48
Gunnlod 662 SAT456 48
Thiazzi 663 SAT456 48
S2004_S_34 664 SAT456 48
Alvaldi 665 SAT456 48
Geirrod 666 SAT456 48

Saturnian Provisional Irregular Satellites

Satellite Code Ephemeris Ref.
S2004_S_31 65067 SAT457 49
S2004_S_24 65070 SAT457 49
S2004_S_28 65077 SAT457 49
S2004_S_21 65079 SAT457 49
S2004_S_36 65081 SAT457 49
S2004_S_37 65082 SAT457 49
S2004_S_39 65084 SAT457 49
S2004_S_07 65085 SAT457 49
S2004_S_12 65086 SAT457 49
S2004_S_13 65087 SAT457 49
S2004_S_17 65088 SAT457 49
S2006_S_01 65089 SAT457 49
S2006_S_03 65090 SAT457 49
S2007_S_02 65091 SAT457 49
S2007_S_03 65092 SAT457 49
S2019_S_01 65093 SAT457 49
S2019_S_02 65094 SAT457 49
S2019_S_03 65095 SAT457 49
S2020_S_01 65096 SAT457 49
S2020_S_02 65097 SAT457 49
S2004_S_40 65098 SAT457 49
S2006_S_09 65100 SAT457 49
S2007_S_05 65101 SAT457 49
S2020_S_03 65102 SAT457 49
S2019_S_04 65103 SAT457 49
S2004_S_41 65104 SAT457 49
S2020_S_04 65105 SAT457 49
S2020_S_05 65106 SAT457 49
S2007_S_06 65107 SAT457 49
S2004_S_42 65108 SAT457 49
S2006_S_10 65109 SAT457 49
S2019_S_05 65110 SAT457 49
S2004_S_43 65111 SAT457 49
S2004_S_44 65112 SAT457 49
S2004_S_45 65113 SAT457 49
S2006_S_11 65114 SAT457 49
S2006_S_12 65115 SAT457 49
S2019_S_06 65116 SAT457 49
S2006_S_13 65117 SAT457 49
S2019_S_07 65118 SAT457 49
S2019_S_08 65119 SAT457 49
S2019_S_09 65120 SAT457 49
S2004_S_46 65121 SAT457 49
S2019_S_10 65122 SAT457 49
S2004_S_47 65123 SAT457 49
S2019_S_11 65124 SAT457 49
S2006_S_14 65125 SAT457 49
S2019_S_12 65126 SAT457 49
S2020_S_06 65127 SAT457 49
S2019_S_13 65128 SAT457 49
S2005_S_04 65129 SAT457 49
S2007_S_07 65130 SAT457 49
S2007_S_08 65131 SAT457 49
S2020_S_07 65132 SAT457 49
S2019_S_14 65133 SAT457 49
S2019_S_15 65134 SAT457 49
S2005_S_05 65135 SAT457 49
S2006_S_15 65136 SAT457 49
S2006_S_16 65137 SAT457 49
S2006_S_17 65138 SAT457 49
S2004_S_48 65139 SAT457 49
S2020_S_08 65140 SAT457 49
S2004_S_49 65141 SAT457 49
S2004_S_50 65142 SAT457 49
S2006_S_18 65143 SAT457 49
S2019_S_16 65144 SAT457 49
S2019_S_17 65145 SAT457 49
S2019_S_18 65146 SAT457 49
S2019_S_19 65147 SAT457 49
S2019_S_20 65148 SAT457 49
S2006_S_19 65149 SAT457 49
S2004_S_51 65150 SAT457 49
S2020_S_09 65151 SAT457 49
S2004_S_52 65152 SAT457 49
S2007_S_09 65153 SAT457 49
S2004_S_53 65154 SAT457 49
S2020_S_10 65155 SAT457 49
S2019_S_21 65156 SAT457 49
S2006_S_20 65157 SAT457 49

Saturnian Provisional Irregular Satellites 2025

Satellite Code Ephemeris Ref.
S2004_S_54 65158 SAT455 46
S2004_S_55 65159 SAT455 46
S2004_S_56 65160 SAT455 46
S2004_S_57 65161 SAT455 46
S2004_S_58 65162 SAT455 46
S2004_S_59 65163 SAT455 46
S2004_S_60 65164 SAT455 46
S2004_S_61 65165 SAT455 46
S2005_S_06 65166 SAT455 46
S2005_S_07 65167 SAT455 46
S2006_S_21 65168 SAT455 46
S2006_S_22 65169 SAT455 46
S2006_S_23 65170 SAT455 46
S2006_S_24 65171 SAT455 46
S2006_S_25 65172 SAT455 46
S2006_S_26 65173 SAT455 46
S2006_S_27 65174 SAT455 46
S2006_S_28 65175 SAT455 46
S2006_S_29 65176 SAT455 46
S2007_S_10 65177 SAT455 46
S2007_S_11 65178 SAT455 46
S2019_S_22 65179 SAT455 46
S2019_S_23 65180 SAT455 46
S2019_S_24 65181 SAT455 46
S2019_S_25 65182 SAT455 46
S2019_S_26 65183 SAT455 46
S2019_S_27 65184 SAT455 46
S2019_S_28 65185 SAT455 46
S2019_S_29 65186 SAT455 46
S2019_S_30 65187 SAT455 46
S2019_S_31 65188 SAT455 46
S2019_S_32 65189 SAT455 46
S2019_S_33 65190 SAT455 46
S2019_S_34 65191 SAT455 46
S2019_S_35 65192 SAT455 46
S2019_S_36 65193 SAT455 46
S2019_S_37 65194 SAT455 46
S2019_S_38 65195 SAT455 46
S2019_S_39 65196 SAT455 46
S2019_S_40 65197 SAT455 46
S2019_S_41 65198 SAT455 46
S2019_S_42 65199 SAT455 46
S2019_S_43 65200 SAT455 46
S2019_S_44 65201 SAT455 46
S2020_S_11 65202 SAT455 46
S2020_S_12 65203 SAT455 46
S2020_S_13 65204 SAT455 46
S2020_S_14 65205 SAT455 46
S2020_S_15 65206 SAT455 46
S2020_S_16 65207 SAT455 46
S2020_S_17 65208 SAT455 46
S2020_S_18 65209 SAT455 46
S2020_S_19 65210 SAT455 46
S2020_S_20 65211 SAT455 46
S2020_S_21 65212 SAT455 46
S2020_S_22 65213 SAT455 46
S2020_S_23 65214 SAT455 46
S2020_S_24 65215 SAT455 46
S2020_S_25 65216 SAT455 46
S2020_S_26 65217 SAT455 46
S2020_S_27 65218 SAT455 46
S2020_S_28 65219 SAT455 46
S2020_S_29 65220 SAT455 46
S2020_S_30 65221 SAT455 46
S2020_S_31 65222 SAT455 46
S2020_S_32 65223 SAT455 46
S2020_S_33 65224 SAT455 46
S2020_S_34 65225 SAT455 46
S2020_S_35 65226 SAT455 46
S2020_S_36 65227 SAT455 46
S2020_S_37 65228 SAT455 46
S2020_S_38 65229 SAT455 46
S2020_S_39 65230 SAT455 46
S2020_S_40 65231 SAT455 46
S2020_S_41 65232 SAT455 46
S2020_S_42 65233 SAT455 46
S2020_S_43 65234 SAT455 46
S2020_S_44 65235 SAT455 46
S2023_S_01 65236 SAT455 46
S2023_S_02 65237 SAT455 46
S2023_S_03 65238 SAT455 46
S2023_S_04 65239 SAT455 46
S2023_S_05 65240 SAT455 46
S2023_S_06 65241 SAT455 46
S2023_S_07 65242 SAT455 46
S2023_S_08 65243 SAT455 46
S2023_S_09 65244 SAT455 46
S2023_S_10 65245 SAT455 46
S2023_S_11 65246 SAT455 46
S2023_S_12 65247 SAT455 46
S2023_S_13 65248 SAT455 46
S2023_S_14 65249 SAT455 46
S2023_S_15 65250 SAT455 46
S2023_S_16 65251 SAT455 46
S2023_S_17 65252 SAT455 46
S2023_S_18 65253 SAT455 46
S2023_S_19 65254 SAT455 46
S2023_S_20 65255 SAT455 46
S2023_S_21 65256 SAT455 46
S2023_S_22 65257 SAT455 46
S2023_S_23 65258 SAT455 46
S2023_S_24 65259 SAT455 46
S2023_S_25 65260 SAT455 46
S2023_S_26 65261 SAT455 46
S2023_S_27 65262 SAT455 46
S2023_S_28 65263 SAT455 46
S2023_S_29 65264 SAT455 46
S2023_S_30 65265 SAT455 46
S2023_S_31 65266 SAT455 46
S2023_S_32 65267 SAT455 46
S2023_S_33 65268 SAT455 46
S2023_S_34 65269 SAT455 46
S2023_S_35 65270 SAT455 46
S2023_S_36 65271 SAT455 46
S2023_S_37 65272 SAT455 46
S2023_S_38 65273 SAT455 46
S2023_S_39 65274 SAT455 46
S2023_S_40 65275 SAT455 46
S2023_S_41 65276 SAT455 46
S2023_S_42 65277 SAT455 46
S2023_S_43 65278 SAT455 46
S2023_S_44 65279 SAT455 46
S2023_S_45 65280 SAT455 46
S2023_S_46 65281 SAT455 46
S2023_S_47 65282 SAT455 46
S2023_S_48 65283 SAT455 46
S2023_S_49 65284 SAT455 46
S2023_S_50 65285 SAT455 46

Saturnian Provisional Irregular Satellites 2026

Satellite Code Ephemeris Ref.
S2020_S_45 65286 SAT458 50
S2020_S_46 65287 SAT458 50
S2020_S_47 65288 SAT458 50
S2020_S_48 65289 SAT458 50
S2023_S_51 65290 SAT458 50
S2023_S_52 65291 SAT458 50
S2023_S_53 65292 SAT458 50
S2023_S_54 65293 SAT458 50
S2023_S_55 65294 SAT458 50
S2023_S_56 65295 SAT458 50
S2023_S_57 65296 SAT458 50

Uranian Regular Satellites

Satellite Code Ephemeris Ref.
Ariel 701 URA182 45
Umbriel 702 URA182 45
Titania 703 URA182 45
Oberon 704 URA182 45
Miranda 705 URA182 45
Puck 715 URA182 45

Uranian Inner Satellites

Satellite Code Ephemeris Ref.
Cordelia 706 URA184 10
Ophelia 707 URA184 10
Bianca 708 URA184 10
Cressida 709 URA184 10
Desdemona 710 URA184 10
Juliet 711 URA184 10
Portia 712 URA184 10
Rosalind 713 URA184 10
Belinda 714 URA184 10
Puck 715 URA184 10
Perdita 725 URA184 10
Mab 726 URA184 10
Cupid 727 URA184 10
S2025_U1 75052 URA184 10

Uranian Irregular Satellites

Satellite Code Ephemeris Ref.
Caliban 716 URA117 43
Sycorax 717 URA117 43
Prospero 718 URA117 43
Setebos 719 URA117 43
Stephano 720 URA117 43
Trinculo 721 URA117 43
Ferdinand 722 URA117 43
Francisco 723 URA117 43
Margaret 724 URA117 43
S2023_U1 75051 URA117 43

Neptunian Satellites

Satellite Code Ephemeris Ref.
Triton 801 NEP097 24
Naiad 803 NEP097 24
Thalassa 804 NEP097 24
Despina 805 NEP097 24
Galatea 806 NEP097 24
Larissa 807 NEP097 24
Proteus 808 NEP097 24
Hippocamp 814 NEP097 24

Neptunian Irregular Satellites

Satellite Code Ephemeris Ref.
Nereid 802 NEP105 44
Halimede 809 NEP104 43
Psamathe 810 NEP104 43
Sao 811 NEP104 43
Laomedeia 812 NEP104 43
Neso 813 NEP104 43
S2002_N5 85051 NEP104 43
S2021_N1 85052 NEP104 43

Pluto Satellites

Satellite Code Ephemeris Ref.
Charon 901 PLU060 6
Nix 902 PLU060 6
Hydra 903 PLU060 6
Kerberos 904 PLU060 6
Styx 905 PLU060 6

References

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