Planetary Satellite Ephemeris List

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Planetary Satellite Ephemeris List

The following tables list the current JPL planetary satellite ephemeris files and their corresponding accuracies. These ephemeris files are used by HORIZONS to provide high-precision ephemerides for the planetary satellites. Tables are grouped by planet. Table column headings are described below.

Martian Satellites

Sat. Code Ephem Start Time Stop Time R (km) T (km) N (km) P (s) RA/Dec (arcsec) Ref.

Phobos 401 MAR085 04-Jan-1900 03-Jan-2100 2 5 2 0.0001 0.01 1

Deimos 402 MAR085 04-Jan-1900 03-Jan-2100 3 10 3 0.0003 0.02 1

Galilean Satellites of Jupiter

Sat. Code Ephem Start Time Stop Time R (km) T (km) N (km) P (s) RA/Dec (arcsec) Ref.

Io 501 JUP100 03-JAN-1894 04-Jan-2051 10 125 15 0.0003 0.04 2

Io 501 JUP230 29-Dec-1924 01-Jan-2050 5 5 5 0.0003 0.002 3

Europa 502 JUP100 03-JAN-1894 04-Jan-2051 150 500 30 0.001 0.17 2

Europa 502 JUP230 29-Dec-1924 01-Jan-2050 5 5 5 0.0003 0.002 3

Ganymede 503 JUP100 03-JAN-1894 04-Jan-2051 60 300 30 0.003 0.10 2

Ganymede 503 JUP230 29-Dec-1924 01-Jan-2050 5 5 5 0.0003 0.002 3

Callisto 504 JUP100 03-JAN-1894 04-Jan-2051 25 200 70 0.02 0.07 2

Callisto 504 JUP230 29-Dec-1924 01-Jan-2050 5 5 5 0.0003 0.002 3

Jovian Inner Satellites

Sat. Code Ephem Start Time Stop Time R (km) T (km) N (km) P (s) RA/Dec (arcsec) Ref.

Amalthea 505 JUP230 29-Dec-1924 01-Jan-2050 200 400 100 0.0003 0.13 3

Thebe 514 JUP230 29-Dec-1924 01-Jan-2050 200 400 100 0.0005 0.13 3

Adrastea 515 JUP230 29-Dec-1924 01-Jan-2050 200 800 100 0.0014 0.27 3

Metis 516 JUP230 29-Dec-1924 01-Jan-2050 200 600 100 0.0009 0.20 3

Jovian Irregular Satellites

Sat. Code Ephem Start Time Stop Time R (km) T (km) N (km) P (s) RA/Dec (arcsec) Ref.

Himalia 506 JUP256 28-Jan-1894 02-Jan-2050 200 300 200 6 0.10 4

Elara 507 JUP256 28-Jan-1894 02-Jan-2050 200 400 200 10 0.13 4

Pasiphae 508 JUP256 28-Jan-1894 02-Jan-2050 200 400 250 30 0.13 4

Sinope 509 JUP256 28-Jan-1894 02-Jan-2050 250 700 300 40 0.23 4

Lysithea 510 JUP256 28-Jan-1894 02-Jan-2050 300 800 400 15 0.28 4

Carme 511 JUP256 28-Jan-1894 02-Jan-2050 300 900 300 50 0.30 4

Ananke 512 JUP256 28-Jan-1894 02-Jan-2050 350 900 400 60 0.30 4

Leda 513 JUP256 28-Jan-1894 02-Jan-2050 500 1200 400 50 0.40 4

Callirrhoe 517 JUP261 16-Aug-1975 15-Nov-2049 tbd tbd tbd tbd <30.0 5

Themisto 518 JUP261 16-Aug-1975 15-Nov-2049 tbd tbd tbd tbd <30.0 5

Megaclite 519 JUP261 16-Aug-1975 15-Nov-2049 tbd tbd tbd tbd <30.0 5

Taygete 520 JUP261 16-Aug-1975 15-Nov-2049 tbd tbd tbd tbd <30.0 5

Chaldene 521 JUP261 16-Aug-1975 15-Nov-2049 tbd tbd tbd tbd <30.0 5

Harpalyke 522 JUP261 16-Aug-1975 15-Nov-2049 tbd tbd tbd tbd <30.0 5

Kalyke 523 JUP261 16-Aug-1975 15-Nov-2049 tbd tbd tbd tbd <30.0 5

Iocaste 524 JUP261 16-Aug-1975 15-Nov-2049 tbd tbd tbd tbd <30.0 5

Erinome 525 JUP261 16-Aug-1975 15-Nov-2049 tbd tbd tbd tbd <30.0 5

Isonoe 526 JUP261 16-Aug-1975 15-Nov-2049 tbd tbd tbd tbd <30.0 5

Praxidike 527 JUP261 16-Aug-1975 15-Nov-2049 tbd tbd tbd tbd <30.0 5

Autonoe 528 JUP269 21-Jan-1900 24-Oct-2099 tbd tbd tbd tbd <60.0 6

Thyone 529 JUP269 21-Jan-1900 24-Oct-2099 tbd tbd tbd tbd <60.0 6

Hermippe 530 JUP269 21-Jan-1900 24-Oct-2099 tbd tbd tbd tbd <60.0 6

Aitne 531 JUP269 21-Jan-1900 24-Oct-2099 tbd tbd tbd tbd <60.0 6

Eurydome 532 JUP269 21-Jan-1900 24-Oct-2099 tbd tbd tbd tbd <60.0 6

Euanthe 533 JUP269 21-Jan-1900 24-Oct-2099 tbd tbd tbd tbd <60.0 6

Euporie 534 JUP269 21-Jan-1900 24-Oct-2099 tbd tbd tbd tbd <60.0 6

Orthosie 535 JUP269 21-Jan-1900 24-Oct-2099 tbd tbd tbd tbd <60.0 6

Sponde 536 JUP269 21-Jan-1900 24-Oct-2099 tbd tbd tbd tbd <60.0 6

Kale 537 JUP269 21-Jan-1900 24-Oct-2099 tbd tbd tbd tbd <60.0 6

Pasithee 538 JUP269 21-Jan-1900 24-Oct-2099 tbd tbd tbd tbd <60.0 6

Hegemone 539 JUP268 02-Mar-1900 03-Dec-2099 tbd tbd tbd tbd <60.0 7

Mneme 540 JUP268 02-Mar-1900 03-Dec-2099 tbd tbd tbd tbd <60.0 7

Aoede 541 JUP268 02-Mar-1900 03-Dec-2099 tbd tbd tbd tbd <60.0 7

Thelxinoe 542 JUP268 02-Mar-1900 03-Dec-2099 tbd tbd tbd tbd <60.0 7

Arche 543 JUP268 02-Mar-1900 03-Dec-2099 tbd tbd tbd tbd <60.0 7

Kallichore 544 JUP268 02-Mar-1900 03-Dec-2099 tbd tbd tbd tbd <60.0 7

Helike 545 JUP268 02-Mar-1900 03-Dec-2099 tbd tbd tbd tbd <60.0 7

Carpo 546 JUP268 02-Mar-1900 03-Dec-2099 tbd tbd tbd tbd <60.0 7

Eukelade 547 JUP268 02-Mar-1900 03-Dec-2099 tbd tbd tbd tbd <60.0 7

Cyllene 548 JUP268 02-Mar-1900 03-Dec-2099 tbd tbd tbd tbd <60.0 7

Kore 549 JUP268 02-Mar-1900 03-Dec-2099 tbd tbd tbd tbd <60.0 7

Herse 550 JUP270 02-Mar-1900 03-Dec-2099 tbd tbd tbd tbd <60.0 8

Jovian Irregular Satellites (continued)

Sat. Code Ephem Start Time Stop Time R (km) T (km) N (km) P (s) RA/Dec (arcsec) Ref.

S/2003 J 2 55060 JUP270 02-Mar-1900 03-Dec-2099 tbd tbd tbd tbd <60.0 8

S/2003 J 3 55061 JUP270 02-Mar-1900 03-Dec-2099 tbd tbd tbd tbd <60.0 8

S/2003 J 4 55062 JUP270 02-Mar-1900 03-Dec-2099 tbd tbd tbd tbd <60.0 8

S/2003 J 5 55063 JUP270 02-Mar-1900 03-Dec-2099 tbd tbd tbd tbd <60.0 8

S/2003 J 9 55064 JUP270 02-Mar-1900 03-Dec-2099 tbd tbd tbd tbd <60.0 8

S/2003 J 10 55065 JUP270 02-Mar-1900 03-Dec-2099 tbd tbd tbd tbd <60.0 8

S/2003 J 12 55066 JUP270 02-Mar-1900 03-Dec-2099 tbd tbd tbd tbd <60.0 8

S/2003 J 15 55067 JUP270 02-Mar-1900 03-Dec-2099 tbd tbd tbd tbd <60.0 8

S/2003 J 16 55068 JUP270 02-Mar-1900 03-Dec-2099 tbd tbd tbd tbd <60.0 8

S/2003 J 18 55069 JUP270 02-Mar-1900 03-Dec-2099 tbd tbd tbd tbd <60.0 8

S/2003 J 19 55070 JUP270 02-Mar-1900 03-Dec-2099 tbd tbd tbd tbd <60.0 8

S/2003 J 23 55071 JUP270 02-Mar-1900 03-Dec-2099 tbd tbd tbd tbd <60.0 8

Saturnian Regular Satellites

Sat. Code Ephem Start Time Stop Time R (km) T (km) N (km) P (s) RA/Dec (arcsec) Ref.

Mimas 601 SAT317 27-Dec-1599 09-Jan-2600 5 50 5 tbd 0.009 9

Enceladus 602 SAT317 27-Dec-1599 09-Jan-2600 5 20 5 tbd 0.004 9

Tethys 603 SAT317 27-Dec-1599 09-Jan-2600 5 50 5 tbd 0.009 9

Dione 604 SAT317 27-Dec-1599 09-Jan-2600 5 20 5 tbd 0.004 9

Rhea 605 SAT317 27-Dec-1599 09-Jan-2600 5 20 5 tbd 0.004 9

Titan 606 SAT317 27-Dec-1599 09-Jan-2600 5 10 5 tbd 0.002 9

Hyperion 607 SAT317 27-Dec-1599 09-Jan-2600 10 100 5 tbd 0.017 9

Iapetus 608 SAT317 27-Dec-1599 09-Jan-2600 5 20 5 tbd 0.004 9

Methone 632 SAT317 27-Dec-1599 09-Jan-2600 tbd tbd tbd tbd tbd 9

Pallene 633 SAT321 27-Dec-1599 09-Jan-2600 tbd tbd tbd tbd tbd 10

Anthe 649 SAT321 27-Dec-1599 09-Jan-2600 tbd tbd tbd tbd tbd 10

Aegaeon 653 SAT323 27-Dec-1980 09-Jan-2600 tbd tbd tbd tbd tbd 13

Saturnian Librating Satellites

Sat. Code Ephem Start Time Stop Time R (km) T (km) N (km) P (s) RA/Dec (arcsec) Ref.

Helene 612 SAT317 27-Dec-1599 09-Jan-2600 5 20 5 tbd 0.004 9

Telesto 613 SAT317 27-Dec-1599 09-Jan-2600 5 75 5 tbd 0.013 9

Calypso 614 SAT317 27-Dec-1599 09-Jan-2600 5 75 5 tbd 0.013 9

Polydeuces 634 SAT321 27-Dec-1599 09-Jan-2600 tbd tbd tbd tbd tbd 10

Saturnian Inner Satellites

Sat. Code Ephem Start Time Stop Time R (km) T (km) N (km) P (s) RA/Dec (arcsec) Ref.

Janus 610 SAT275 20-Jan-1980 29-Dec-2014 10 50 5 tbd 0.01 11

Epimetheus 611 SAT275 20-Jan-1980 29-Dec-2014 10 50 5 tbd 0.01 11

Atlas 615 SAT275 20-Jan-1980 29-Dec-2014 10 200 5 tbd 0.04 11

Prometheus 616 SAT275 20-Jan-1980 29-Dec-2014 10 100 5 tbd 0.02 11

Pandora 617 SAT275 20-Jan-1980 29-Dec-2014 10 100 5 tbd 0.02 11

Pan 618 SAT291 20-Jan-1980 29-Dec-2014 tbd tbd tbd tbd tbd 12

Daphnis 635 SAT291 20-Jan-1980 29-Dec-2014 tbd tbd tbd tbd tbd 12

Saturnian Irregular Satellites

Sat. Code Ephem Start Time Stop Time R (km) T (km) N (km) P (s) RA/Dec (arcsec) Ref.

Phoebe 609 SAT317 27-Dec-1599 09-Jan-2600 10 50 10 tbd 0.009 9

Ymir 619 SAT341 07-Jan-1900 02-Jan-2100 tbd tbd tbd tbd <5.0 14

Paaliaq 620 SAT341 07-Jan-1900 02-Jan-2100 tbd tbd tbd tbd <5.0 14

Tarvos 621 SAT341 07-Jan-1900 02-Jan-2100 tbd tbd tbd tbd <5.0 14

Ijiraq 622 SAT341 07-Jan-1900 02-Jan-2100 tbd tbd tbd tbd <5.0 14

Suttungr 623 SAT341 07-Jan-1900 02-Jan-2100 tbd tbd tbd tbd <5.0 14

Kiviuq 624 SAT341 07-Jan-1900 02-Jan-2100 tbd tbd tbd tbd <5.0 14

Mundilfari 625 SAT341 07-Jan-1900 02-Jan-2100 tbd tbd tbd tbd <5.0 14

Albiorix 626 SAT341 07-Jan-1900 02-Jan-2100 tbd tbd tbd tbd <5.0 14

Skadi 627 SAT341 07-Jan-1900 02-Jan-2100 tbd tbd tbd tbd <5.0 14

Erriapus 628 SAT341 07-Jan-1900 02-Jan-2100 tbd tbd tbd tbd <5.0 14

Siarnaq 629 SAT341 07-Jan-1900 02-Jan-2100 tbd tbd tbd tbd <5.0 14

Thrymr 630 SAT341 07-Jan-1900 02-Jan-2100 tbd tbd tbd tbd <5.0 14

Narvi 631 SAT341 07-Jan-1900 02-Jan-2100 tbd tbd tbd tbd <5.0 14

Aegir 636 SAT341 07-Jan-1900 02-Jan-2100 tbd tbd tbd tbd <10.0 14

Bebhionn 637 SAT341 07-Jan-1900 02-Jan-2100 tbd tbd tbd tbd <10.0 14

Bergelmir 638 SAT341 07-Jan-1900 02-Jan-2100 tbd tbd tbd tbd <10.0 14

Bestla 639 SAT341 07-Jan-1900 02-Jan-2100 tbd tbd tbd tbd <10.0 14

Farbauti 640 SAT341 07-Jan-1900 02-Jan-2100 tbd tbd tbd tbd <10.0 14

Fenrir 641 SAT341 07-Jan-1900 02-Jan-2100 tbd tbd tbd tbd <10.0 14

Fornjot 642 SAT341 07-Jan-1900 02-Jan-2100 tbd tbd tbd tbd <10.0 14

Hati 643 SAT341 07-Jan-1900 02-Jan-2100 tbd tbd tbd tbd <10.0 14

Hyrrokkin 644 SAT341 07-Jan-1900 02-Jan-2100 tbd tbd tbd tbd <10.0 14

Kari 645 SAT341 07-Jan-1900 02-Jan-2100 tbd tbd tbd tbd <10.0 14

Loge 646 SAT341 07-Jan-1900 02-Jan-2100 tbd tbd tbd tbd <10.0 14

Skoll 647 SAT341 07-Jan-1900 02-Jan-2100 tbd tbd tbd tbd <10.0 14

Surtur 648 SAT341 07-Jan-1900 02-Jan-2100 tbd tbd tbd tbd <10.0 14

Jarnsaxa 650 SAT341 07-Jan-1900 02-Jan-2100 tbd tbd tbd tbd <10.0 14

Greip 651 SAT341 07-Jan-1900 02-Jan-2100 tbd tbd tbd tbd <10.0 14

Tarqeq 652 SAT341 07-Jan-1900 02-Jan-2100 tbd tbd tbd tbd <10.0 14

Saturnian Irregular Satellites (continued)

Sat. Code Ephem Start Time Stop Time R (km) T (km) N (km) P (s) RA/Dec (arcsec) Ref.

S/2004 S 7 65035 SAT341 07-Jan-1900 02-Jan-2100 tbd tbd tbd tbd <10.0 14

S/2004 S 12 65040 SAT341 07-Jan-1900 02-Jan-2100 tbd tbd tbd tbd <10.0 14

S/2004 S 13 65041 SAT341 07-Jan-1900 02-Jan-2100 tbd tbd tbd tbd <10.0 14

S/2004 S 17 65045 SAT341 07-Jan-1900 02-Jan-2100 tbd tbd tbd tbd <10.0 14

S/2006 S 01 65048 SAT341 07-Jan-1900 02-Jan-2100 tbd tbd tbd tbd <10.0 14

S/2006 S 03 65050 SAT341 07-Jan-1900 02-Jan-2100 tbd tbd tbd tbd <10.0 14

S/2007 S 02 65055 SAT341 07-Jan-1906 07-Jan-2105 tbd tbd tbd tbd <20.0 14

S/2007 S 03 65056 SAT341 07-Jan-1906 07-Jan-2105 tbd tbd tbd tbd <20.0 14

Uranian Regular Satellites

Sat. Code Ephem Start Time Stop Time R (km) T (km) N (km) P (s) RA/Dec (arcsec) Ref.

Ariel 701 URA083 03-Jan-1910 04-Jan-2050 200 200 200 0.016 0.02 15

Umbriel 702 URA083 03-Jan-1910 04-Jan-2050 200 200 200 0.028 0.02 15

Titania 703 URA083 03-Jan-1910 04-Jan-2050 200 200 200 0.044 0.02 15

Oberon 704 URA083 03-Jan-1910 04-Jan-2050 200 200 200 0.100 0.02 15

Miranda 705 URA083 03-Jan-1910 04-Jan-2050 200 200 200 0.010 0.02 15

Uranian Inner Satellites

Sat. Code Ephem Start Time Stop Time R (km) T (km) N (km) P (s) RA/Dec (arcsec) Ref.

Cordelia 706 URA091 01-Jan-1980 01-Jan-2050 50 14500 200 0.15 1.1 17

Ophelia 707 URA091 01-Jan-1980 01-Jan-2050 500 75000 250 0.9 5.7 17

Bianca 708 URA091 01-Jan-1980 01-Jan-2050 30 410 230 0.0060 0.03 17

Cressida 709 URA091 01-Jan-1980 01-Jan-2050 25 220 150 0.0035 0.02 17

Desdemona 710 URA091 01-Jan-1980 01-Jan-2050 25 220 150 0.0035 0.02 17

Juliet 711 URA091 01-Jan-1980 01-Jan-2050 20 185 150 0.0030 0.01 17

Portia 712 URA091 01-Jan-1980 01-Jan-2050 25 175 150 0.0030 0.01 17

Rosalind 713 URA091 01-Jan-1980 01-Jan-2050 25 260 180 0.0050 0.02 17

Belinda 714 URA091 01-Jan-1980 01-Jan-2050 20 220 150 0.0050 0.02 17

Puck 715 URA091 01-Jan-1980 01-Jan-2050 20 200 120 0.0050 0.02 17

Perdita 725 URA091 01-Jan-1980 01-Jan-2050 tbd tbd tbd tbd <10.0 17

Mab 726 URA091 01-Jan-1980 01-Jan-2050 tbd tbd tbd tbd <10.0 17

Cupid 727 URA091 01-Jan-1980 01-Jan-2050 tbd tbd tbd tbd <10.0 17

Uranian Irregular Satellites

Sat. Code Ephem Start Time Stop Time R (km) T (km) N (km) P (s) RA/Dec (arcsec) Ref.

Caliban 716 URA095 03-Jan-1900 25-Dec-2099 tbd tbd tbd tbd <10.0 19

Sycorax 717 URA095 03-Jan-1900 25-Dec-2099 tbd tbd tbd tbd <10.0 19

Prospero 718 URA095 03-Jan-1900 25-Dec-2099 tbd tbd tbd tbd <10.0 19

Setebos 719 URA095 03-Jan-1900 25-Dec-2099 tbd tbd tbd tbd <10.0 19

Stephano 720 URA095 03-Jan-1900 25-Dec-2099 tbd tbd tbd tbd <10.0 19

Trinculo 721 URA095 03-Jan-1900 25-Dec-2099 tbd tbd tbd tbd <10.0 19

Ferdinand 722 URA095 03-Jan-1900 25-Dec-2099 tbd tbd tbd tbd <10.0 19

Francisco 723 URA095 03-Jan-1900 25-Dec-2099 tbd tbd tbd tbd <10.0 19

Margaret 724 URA095 03-Jan-1900 25-Dec-2099 tbd tbd tbd tbd <10.0 19

Neptunian Irregular Satellites

Sat. Code Ephem Start Time Stop Time R (km) T (km) N (km) P (s) RA/Dec (arcsec) Ref.

Triton 801 NEP081 30-Dec-1799 02-Jan-2200 2 150 50 tbd 0.007 20

Nereid 802 NEP081 30-Dec-1799 02-Jan-2200 1600 3000 60 tbd 0.20 20

Halimede 809 NEP085 01-Jan-1900 23-Dec-2099 tbd tbd tbd tbd <60.0 21

Psamathe 810 NEP085 01-Jan-1900 23-Dec-2099 tbd tbd tbd tbd <90.0 21

Sao 811 NEP085 01-Jan-1900 23-Dec-2099 tbd tbd tbd tbd <90.0 21

Laomedeia 812 NEP085 01-Jan-1900 23-Dec-2099 tbd tbd tbd tbd <60.0 21

Neso 813 NEP085 01-Jan-1900 23-Dec-2099 tbd tbd tbd tbd <90.0 21

Neptunian Inner Satellites

Sat. Code Ephem Start Time Stop Time R (km) T (km) N (km) P (s) RA/Dec (arcsec) Ref.

Naiad 803 NEP077 01-Jan-1950 04-Jan-2050 30 85 60 0.0167 0.05 23

Thalassa 804 NEP077 01-Jan-1950 04-Jan-2050 25 70 40 0.0055 0.05 23

Despina 805 NEP077 01-Jan-1950 04-Jan-2050 20 50 30 0.0008 0.05 23

Galatea 806 NEP077 01-Jan-1950 04-Jan-2050 15 35 25 0.0010 0.05 23

Larissa 807 NEP077 01-Jan-1950 04-Jan-2050 15 35 25 0.0010 0.05 23

Proteus 808 NEP081 30-Dec-1799 02-Jan-2200 4 250 50 tbd 0.01 20

Pluto's Satellites

Sat. Code Ephem Start Time Stop Time R (km) T (km) N (km) P (s) RA/Dec (arcsec) Ref.

Charon 901 PLU017 04-Dec-1899 29-Jan-2051 60 25 6 1.0 0.01 24

Nix 902 PLU017 04-Dec-1899 29-Jan-2051 110 1625 210 tbd <1.0 24

Hydra 903 PLU017 04-Dec-1899 29-Jan-2051 65 1510 105 tbd <1.0 24

Table Column Headings

Code The JPL satellite code number

Ephem The JPL ephemeris identification number

Start Time Ephemeris start time

Stop Time Ephemeris stop time

R Radial position uncertainty (km)

T Downtrack position uncertainty (km)

N Out-of-plane position uncertainty (km)

P Orbital period uncertainty (s)

RA/Dec Geocentric astrometric position uncertainty (arcsec)

REFERENCES

1. Jacobson, R.A. (2010) ``The Orbits and Masses of the Martian Satellites and the Libration of Phobos'', Astronomical Journal 139, 668.

2. Lieske, J.H. (1998) ``Galilean satellite ephemerides E5'', Astronomy & Astrophysics Supp. 129, 205.

3. Jacobson, R.A. (2003) JUP230 - JPL satellite ephemeris.

4. Jacobson, R.A. (2006) JUP256 - JPL satellite ephemeris. Fit to all observations from discovery to August 2006.

5. Jacobson, R.A. (2006) JUP261 - JPL satellite ephemeris.

6. Jacobson, R.A. (2004) JUP269 - JPL satellite ephemeris

7. Jacobson, R.A. (2009) JUP268 - JPL satellite ephemeris.

8. Jacobson, R.A. (2009) JUP267 - JPL satellite ephemeris.

9. Jacobson, R.A. (2009) SAT317 - JPL satellite ephemeris.

10. Jacobson, R.A. (2009) SAT321 - JPL satellite ephemeris.

11. Jacobson, R. A., Spitale, J., Porco, C. C., Beurle, K. Cooper, N. J., Evans, M. W., and Murray, C. D. (2008) ``Revised Orbits of Saturn's Small Inner Satellites'', Astronomical Journal 135, 261.

12. Jacobson, R.A. (2008) SAT291 - JPL satellite ephemeris.

13. Jacobson, R.A. (2009) SAT323 - JPL satellite ephemeris.

14. Jacobson, R.A. (2010) SAT341 - JPL satellite ephemeris.

15. Jacobson, R. A. (2007) ``The Gravity Field of the Uranian System and the Orbits of the Uranian Satellites and Rings'', Bull. American Astronomical Society 39(3), 453. presented at the 39th annual meeting of the American Astronomical Society Division for Planetary Sciences, Orlando, FL

16. Jacobson, R.A. (1998) ``The orbits of the inner Uranian satellites from Hubble Space Telescope and Voyager 2 observations'', Astronomical Journal 115, 1195.

17. Brozovic, M. (2009) URA091 - JPL satellite ephemeris.

18.Brozovic, M. and Jacobson, R. A. (2009) ``The Orbits of the Outer Uranian Satellites'', Astronomical Journal 137, 3834.

19.Brozovic, M. and Jacobson, R. A. (2010) URA095 - JPL satellite ephemeris.

20. Jacobson, R. A. (2009) ``The Orbits of the Neptunian Satellites and the Orientation of the Pole of Neptune'', Astronomical Journal 137, 4322.

21.Brozovic, M., Jacobson, R. A., and Sheppard, S. S. (2010) ``The Orbits of the Outer Neptunian Satellites'', submitted to the Astronomical Journal.

22. Jacobson, R. A. and Owen, Jr., W. M. (2004) ``The orbits of the inner Neptunian satellites from Voyager, Earthbased, and Hubble Space Telescope observations'', Astronomical Journal 128, 1412.

23. Jacobson, R.A. (2008) NEP077 - JPL satellite ephemeris, an update to NEP050 (Jacobson and Owen 2004, AJ, 128.

24. Jacobson, R.A. (2007) PLU017 - JPL satellite ephemeris.

25. Laskar, J. and Jacobson, R.A. (1987) ``GUST86. An analytical ephemeris of the Uranian satellites'', Astronomy & Astrophysics 188, 212.

26. Jacobson, R.A., Riedel, J.E. and Taylor, A.H. (1991) ``The orbits of Triton and Nereid from spacecraft and Earthbased observations'', Astronomy & Astrophysics 247, 565.

27. Owen, W.M., Vaughan, R.M, and Synnott, S.P. (1991) ``Orbits of the Six New Satellites of Neptune'', Astronomical Journal 101, 1511.

28. Showalter, M.R. (1991) ``Visual detection of 1981S13, Saturn's eighteenth satellite, and its role in the Encke gap'', Nature 351, 709.

29. Jacobson, R.A. (1998) ``The orbit of Phoebe from Earthbased and Voyager observations'', Astronomy & Astrophysics Supp. 128, 7.

30. Jacobson, R.A. (2000) ``The orbits of the outer Jovian satellites'', Astronomical Journal 120, 2679-2686.

31. Jacobson, R.A. (2004) ``The orbits of the major Saturnian satellites and the gravity field of Saturn from spacecraft and Earthbased observations'',Astronomical Journal 128, 492.

32. Jacobson, R. A. and French, R. G. (2004) ``Orbits and Masses of Saturn's Coorbital and F-ring Shepherding Satellites'', Icarus 172, 382.

33. Spitale, J. N., Jacobson, R. A., Porco, C. C., and Owen, Jr., W. M. (2006) ``The Orbits of Saturn's Small Satellites Derived from Combined Historic and Cassini Imaging Observations'', Astronomical Journal 132, 692.

34. Showalter, M. R. and Lissauer, J. J. (2006) ``The Second Ring-Moon System of Uranus: Discovery and Dynamics'', Science 311, 973.

35. Cooper, N. J., Murray, C. D., Evans, M. W., Beurle, K. Jacobson, R. A., and Porco, C. C. (2008) ``Astrometry and Dynamics of Anthe (S/2007 S 4), a New Satellite of Saturn'', Icarus 195, 765.

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