article

This timeline of discovery of Solar System planets and their natural satellites charts the progress of the discovery of new bodies over history.

Historically the naming of natural satellites did not always match the times of their discovery.

In the following tables, planetary satellites are indicated in bold type (e.g. Moon) while planets, major or minor, which directly circle the Sun are in italic type (e.g. Earth). The tables are sorted by publication/announcement date. When two dates are given, the first is publication, the second is the discovery observation's date. If a third date appears, it is the actual date of discovery (the date on which the discoverer first realised what he was looking at).

*Note: Marked moons had complicated discoveries. Several moons took several years to be confirmed, and in several cases were actually lost and rediscovered. Others were found in Voyager photographs years after they were taken.

Color code

The planets and their natural satellites are marked in the following colors:
Mercury Venus Earth and satellite
Mars and satellites Jupiter and satellites Saturn and satellites
Uranus and satellites Neptune and satellites Pluto and satellites

Prehistory

|| bgcolor=#FFD700| || Sol II || bgcolor=#66CDAA| Sol III ||bgcolor=#FFE8E8| Sol V ||bgcolor=#FFFFCC| Sol VI
Prehistory
Date Name Designation Image Planet/Number Designation References/Notes
Unknown In the Ptolemaic system, the Earth was believed to be at the center of the cosmos. Seven planets were placed in orbit around it in an order of increasing distance from the Earth, first established by the Greek Stoics: the Moon, Mercury, Venus, the Sun, Mars, Jupiter and Saturn. This list included two objects, the Sun and the Moon, which are no longer considered to be planets; it also excluded the Earth.
Unknown Mercury Sol I In Nicolaus Copernicus' heliocentric system (De Revolutionibus Orbium Coelestium, 1543) the Earth came to be considered a planet revolving with the other planets around the Sun, in the following order of distance from the Sun: Mercury, Venus, Earth, Mars, Jupiter, and Saturn. The Sun, now situated near the center of revolution, was no longer considered a planet.
Mars Sol IV
Jupiter
Saturn
Unknown Moon Earth I In the Copernican system, the Moon was considered to be no longer a planet but a natural satellite of the Earth, and was the only body in that system whose revolution was not centered on the Sun.

17th century

|| Jupiter IV || Jupiter I || Jupiter II || Jupiter III || Saturn VI || Huygens, Huygens first "published" his discovery as an anagram, sent out on June 13, 1655; later published in full in his [http://www.sil.si.edu/DigitalCollections/HST/Huygens/huygens.htm Systema Saturnium. || Saturn VIII ||rowspan="2"| Cassini, *. Cassini published these two discoveries in Découverte de deux nouvelles planetes autour de Saturne (Sebastien Mabre-Cramoisy, 1673), translated as A Discovery of Two New Planets about Saturn, Made in the Royal Parisian Observatory by Signor Cassini, Philosophical Transactions 8 (1673), pp. 5178-5185. There may be earlier publications within the Journal des scavans. || Saturn V || Saturn III In his work Kosmotheôros (published posthumously in 1698), Christiaan Huygens relates "Jupiter you see has his four, and Saturn his five Moons about him, all plac’d in their Orbits." || Saturn IV
17th century
Date Name Designation Image Planet/Number Designation References/Notes
1610s
March 13 1610 /
January 7 1610 		Galileo, Sidereus Nuncius, *. The Galilean moons. Note: One of the moons may have been recorded by the Chinese astronomer Gan De in 364 BC. The Galilean satellites were the first celestial objects that were confirmed to orbit an object other than the Earth.
March 13 1610 /
January 11 1610
1650s
March 5 1656 /
March 25 1655
1670s
October 25 1671
December 23, 1672
1680s
Cassini. Cassini published these two discoveries on April 22, 1686, judging by An Extract of the Journal Des Scavans of April 22 st. N. 1686, Giving an Account of Two New Satellites of Saturn, Discovered Lately by Mr. Cassini at the Royal Observatory at Paris, Philosophical Transactions 16 (1686-1692) pp. 79-85.
Date Name Designation Image Planet/Number Designation References/Notes

18th century

|| Sol VII || Herschel*. Herschel first reported the discovery of Uranus on April 26, 1781, hedging by calling it a "comet": Account of a Comet, By Mr. Herschel, F. R. S.; Communicated by Dr. Watson, Jun. of Bath, F. R. S., Philosophical Transactions of the Royal Society of London, Volume 71, pp. 492-501. || Uranus III || Herschel || Uranus IV || Herschel || Saturn II || Herschel || Saturn I || Herschel*
18th century
Date Name Designation Image Planet/Number Designation References/Notes
1780s
March 13 1781
January 11 1787
August 28 1789
September 17 1789
Date Name Designation Image Planet/Number Designation References/Notes

19th century

|| Sol VIII || Galle and Le Verrier* || Neptune I || Lassell[http://adsabs.harvard.edu//full/seri/MNRAS/0008//0000008.000.html || Saturn VII || Bond, Bond, Lassell[http://adsabs.harvard.edu//full/seri/MNRAS/0008//0000195.000.html || Uranus I || Lassell* || Uranus II || Lassell* || Mars II || Hall* || Mars I || Hall* || Jupiter V || Barnard* || Saturn IX || Pickering[http://adsabs.harvard.edu//full/seri/ApJ../0009//0000274.000.html
19th century
Date Name Designation Image Planet/Number Designation References/Notes
1840s
September 23, 1846
October 10, 1846
September 16, 1848
1850s
October 24, 1851
1870s
August 12, 1877
August 18, 1877
1890s
October 4 1892 /
September 9, 1892
March 17 1899 /
August 16, 1898
Date Name Designation Image Planet/Number Designation References/Notes

20th century

|| Jupiter VI || Perrine*" target="_blank" >[http://adsabs.harvard.edu//full/seri/AN.../0169//0000027.000.html || Sol IX || Tombaugh* || Uranus V || Kuiper* || Neptune II || Kuiper[http://cfa-www.harvard.edu/iauc/01200/01212.html#Item1 || Saturn X || Dollfus*" target="_blank" >*" target="_blank" >[http://cfa-www.harvard.edu/iauc/03400/03497.html#Item1
(Dollfus may have seen either Janus or Epimetheus) || Saturn XI || Walker* || Pluto I || Christy[http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=1978AJ.....83.1005C&db_key=AST&high=40daf3f6f915047 || Jupiter XV || Jewitt, Danielson / Voyager 2*" target="_blank" >[http://cfa-www.harvard.edu/iauc/03500/03507.html**

|| Saturn X || *" target="_blank" >*
(Confirmed by Voyager 1) || Saturn XI || *" target="_blank" >*
(Confirmed by Voyager 1) || Saturn XII || Laques, Lecacheux*" target="_blank" >[http://cfa-www.harvard.edu/iauc/03500/03534.html#Item1 || Saturn XIV || Pascu, Seidelmann, Baum, Currie[http://cfa-www.harvard.edu/iauc/03500/03534.html#Item1 || Jupiter XIV || Synnott, Voyager 1[http://cfa-www.harvard.edu/iauc/03500/03507.html#Item1

|| Jupiter XVI || Synnott, Voyager 1*

|| Saturn XV || Terrile, Voyager 1* || Saturn XVI || Collins, Voyager 1* || Saturn XVII || Collins, Voyager 1* || Uranus XV || Synnott, Voyager 2* || Neptune VIII || Synnott, Voyager 2[http://cfa-www.harvard.edu/iauc/04800/04806.html#Item1

|| Saturn XVIII || Showalter, Voyager 2**
20th century
Date Name Designation Image Planet/Number Designation References/Notes
1900s
January 6 1905 /
December 3 1904
February 27 1905 /
January 2, 1905 		Elara (formerly known as Hera) Jupiter VII Perrine *
March 1-6 1908 /
January 27, 1908 		Pasiphaë (formerly known as Poseidon) Jupiter VIII Melotte [http://articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?1908MNRAS..68..373.
1910s
July 21, 1914 Sinope (formerly known as Hades) Jupiter IX Nicholson *
1930s
March 13 1930 /
January 23 1930 /
February 18, 1930
July 6, 1938 Lysithea (formerly known as Demeter) Jupiter X Nicholson *
July 30, 1938 Carme (formerly known as Pan) Jupiter XI Nicholson *
1940s
February 16, 1948
May 1, 1949
1950s
September 28, 1951 Ananke (formerly known as Adrastea) Jupiter XII Nicholson *
1960s
December 15 1966
December 18 1966
1970s
September 20 1974 /
September 11, 1974 		Leda Jupiter XIII Kowal *" target="_blank" >[http://cfa-www.harvard.edu/iauc/02700/02711.html#Item1
October 3 1975 /
September 30, 1975 		Themisto* S/1975 J 1 Jupiter XVIII Kowal *
(Discovered and then lost)
April 13, 1978
November 23 1979 /
July 8, 1979
1980s
Date Name Designation Image Planet/Number Designation References/Notes
January 19, 1980
January 26, 1980
March 1, 1980
March 13, 1980
April 8, 1980 Telesto S/1980 S 13 Saturn XIII Smith, Reitsema, Larson, Fountain, Voyager 1 [http://cfa-www.harvard.edu/iauc/03500/03534.html#Item1
April 28, 1980/
March 5, 1979
August 26, 1980/
March 4, 1979
October, 1980
December 30, 1985
January 3, 1986 Juliet S/1986 U 2 Uranus XI Synnott, Voyager 2 [http://cfa-www.harvard.edu/iauc/04100/04165.html#Item6
Portia S/1986 U 1 Uranus XII Synnott, Voyager 2 [http://cfa-www.harvard.edu/iauc/04100/04165.html#Item6
January 9, 1986 Cressida S/1986 U 3 Uranus IX Synnott, Voyager 2 [http://cfa-www.harvard.edu/iauc/04100/04165.html#Item6
January 13, 1986 Desdemona S/1986 U 6 Uranus X Synnott, Voyager 2 [http://cfa-www.harvard.edu/iauc/04100/04165.html#Item6
Rosalind S/1986 U 4 Uranus XIII Synnott, Voyager 2 [http://cfa-www.harvard.edu/iauc/04100/04165.html#Item6
Belinda S/1986 U 5 Uranus XIV Synnott, Voyager 2 [http://cfa-www.harvard.edu/iauc/04100/04165.html#Item6
January 20, 1986 Cordelia S/1986 U 7 Uranus VI Terrile, Voyager 2 *
Ophelia S/1986 U 8 Uranus VII Terrile, Voyager 2 *
January 23, 1986 Bianca S/1986 U 9 Uranus VIII Smith, Voyager 2 *
July 7 1989 /
< June 16, 1989
August 2 1989 /
< July 28, 1989 		Larissa S/1989 N 2 Neptune VII Reitsema, Hubbard, Lebofsky, Tholen, Voyager 2 *
Despina S/1989 N 3 Neptune V Synnott, Voyager 2 *
Galatea S/1989 N 4 Neptune VI Synnott, Voyager 2 *
September 29 1989 /
< September 18, 1989 		Thalassa S/1989 N 5 Neptune IV Terrile, Voyager 2 *
Naiad S/1989 N 6 Neptune III Terrile, Voyager 2 *
1990s
Date Name Designation Image Planet/Number Designation References/Notes
July 16, 1990 /
August 22, 1981
April 14, 1995 /
August 23, 1981 		  S/1981 S 14 (see Methone below)   Saturn Gordon, Murray and Beurle *
September 6, 1997 Caliban S/1997 U 1 Uranus XVI Gladman, Nicholson, Burns, Kavelaars *
Sycorax S/1997 U 2 Uranus XVII Gladman, Nicholson, Burns, Kavelaars *
May 18, 1999 /
January 18, 1986 		Perdita* S/1986 U 10 Uranus XXV Karkoschka, Voyager 2 *
July 18, 1999 Setebos S/1999 U 1 Uranus XIX Kavelaars, Gladman, Holman, Petit, Scholl *
Stephano S/1999 U 2 Uranus XX Gladman, Holman, Kavelaars, Petit, Scholl *
Prospero S/1999 U 3 Uranus XVIII Holman, Kavelaars, Gladman, Petit, Scholl *
2000s
Date Name Designation Image Planet/Number Designation References/Notes
July 18-20, 2000 /
October 6, 1999 		Callirrhoe S/1999 J 1 Jupiter XVII Scotti, Spahr, McMillan, Larsen, Montani, Gleason, Gehrels [http://cfa-www.harvard.edu/cfa/ps/pressinfo/S1999J1.html
August 7, 2000 Ymir S/2000 S 1 Saturn XIX Gladman [http://cfa-www.harvard.edu/mpec/K00/K00Y15.html
Paaliaq S/2000 S 2 Saturn XX Gladman [http://cfa-www.harvard.edu/mpec/K00/K00Y15.html
Kiviuq S/2000 S 5 Saturn XXIV Gladman [http://cfa-www.harvard.edu/mpec/K00/K00Y14.html
September 23, 2000 Siarnaq S/2000 S 3 Saturn XXIX Gladman, Kavelaars [http://cfa-www.harvard.edu/mpec/K00/K00Y14.html
Tarvos S/2000 S 4 Saturn XXI Kavelaars, Gladman [http://cfa-www.harvard.edu/mpec/K00/K00Y14.html
Ijiraq S/2000 S 6 Saturn XXII Kavelaars, Gladman [http://cfa-www.harvard.edu/mpec/K00/K00Y14.html
Thrymr S/2000 S 7 Saturn XXX Gladman, Kavelaars [http://cfa-www.harvard.edu/mpec/K00/K00Y15.html
Skathi S/2000 S 8 Saturn XXVII Kavelaars, Gladman [http://cfa-www.harvard.edu/mpec/K00/K00Y15.html
Mundilfari S/2000 S 9 Saturn XXV Gladman, Kavelaars [http://cfa-www.harvard.edu/mpec/K00/K00Y15.html
Erriapo S/2000 S 10 Saturn XXVIII Kavelaars, Gladman [http://cfa-www.harvard.edu/mpec/K00/K00Y14.html
Suttungr S/2000 S 12 Saturn XXIII Gladman, Kavelaars [http://cfa-www.harvard.edu/mpec/K00/K00Y33.html
November 9, 2000 Albiorix S/2000 S 11 Saturn XXVI Holman, Spahr [http://cfa-www.harvard.edu/mpec/K00/K00Y13.html
November 25 2000/
November 21, 2000 		Themisto* S/2000 J 1 Jupiter XVIII Sheppard, Jewitt, Fernández, Magnier (Rediscovered) [http://cfa-www.harvard.edu/mpec/K00/K00Y16.html
Date Name Designation Image Planet/Number Designation References/Notes

21st century

*

|| Saturn XXXIII || Porco, Charnoz, Brahic, Dones / Cassini-Huygens * *

|| Saturn || Murray, Porco et al. / Cassini-Huygens**

*

*

*

|| Saturn XXXV || Porco et al. / Cassini-Huygens*
21st century
Date Name Designation Image Planet/Number Designation References/Notes
January 5, 2001/
November 23, 2000 		Kalyke S/2000 J 2 Jupiter XXIII Sheppard, Jewitt, Fernández, Magnier, Dahm, Evans [http://cfa-www.harvard.edu/mpec/K01/K01A28.html
Iocaste S/2000 J 3 Jupiter XXIV Sheppard, Jewitt, Fernández, Magnier, Dahm, Evans [http://cfa-www.harvard.edu/mpec/K01/K01A28.html
Erinome S/2000 J 4 Jupiter XXV Sheppard, Jewitt, Fernández, Magnier, Dahm, Evans [http://cfa-www.harvard.edu/mpec/K01/K01A28.html
Harpalyke S/2000 J 5 Jupiter XXII Sheppard, Jewitt, Fernández, Magnier, Dahm, Evans [http://cfa-www.harvard.edu/mpec/K01/K01A28.html
Isonoe S/2000 J 6 Jupiter XXVI Sheppard, Jewitt, Fernández, Magnier, Dahm, Evans [http://cfa-www.harvard.edu/mpec/K01/K01A28.html
Praxidike S/2000 J 7 Jupiter XXVII Sheppard, Jewitt, Fernández, Magnier, Dahm, Evans [http://cfa-www.harvard.edu/mpec/K01/K01A29.html
January 5, 2001/
November 25, 2000 		Megaclite S/2000 J 8 Jupiter XIX Sheppard, Jewitt, Fernández, Magnier, Dahm, Evans [http://cfa-www.harvard.edu/mpec/K01/K01A29.html
Taygete S/2000 J 9 Jupiter XX Sheppard, Jewitt, Fernández, Magnier, Dahm, Evans [http://cfa-www.harvard.edu/mpec/K01/K01A29.html
January 5, 2001/
November 26, 2000 		Chaldene S/2000 J 10 Jupiter XXI Sheppard, Jewitt, Fernández, Magnier, Dahm, Evans [http://cfa-www.harvard.edu/mpec/K01/K01A29.html
January 5, 2001/
December 5, 2000 		  S/2000 J 11 Jupiter Sheppard, Jewitt, Fernández, Magnier, Dahm, Evans [http://cfa-www.harvard.edu/mpec/K01/K01A29.html
August 13, 2001 Trinculo S/2001 U 1 Uranus XXI Holman, Kavelaars, Milisavljevic [http://cfa-www.harvard.edu/mpec/K02/K02S64.html
Date Name Designation Image Planet/Number Designation References/Notes
May 16, 2002/
December 9, 2001 		Hermippe S/2001 J 3 Jupiter XXX Sheppard, Jewitt, Kleyna [http://cfa-www.harvard.edu/mpec/K02/K02J54.html
Eurydome S/2001 J 4 Jupiter XXXII Sheppard, Jewitt, Kleyna [http://cfa-www.harvard.edu/mpec/K02/K02J54.html
Sponde S/2001 J 5 Jupiter XXXVI Sheppard, Jewitt, Kleyna [http://cfa-www.harvard.edu/mpec/K02/K02J54.html
Kale S/2001 J 8 Jupiter XXXVII Sheppard, Jewitt, Kleyna [http://cfa-www.harvard.edu/mpec/K02/K02J54.html
May 16, 2002/
December 10, 2001 		Autonoe S/2001 J 1 Jupiter XXVIII Sheppard, Jewitt, Kleyna [http://cfa-www.harvard.edu/mpec/K02/K02J54.html
May 16, 2002/
December 11, 2001 		Thyone S/2001 J 2 Jupiter XXIX Sheppard, Jewitt, Kleyna [http://cfa-www.harvard.edu/mpec/K02/K02J54.html
Pasithee S/2001 J 6 Jupiter XXXVIII Sheppard, Jewitt, Kleyna [http://cfa-www.harvard.edu/mpec/K02/K02J54.html
Euanthe S/2001 J 7 Jupiter XXXIII Sheppard, Jewitt, Kleyna [http://cfa-www.harvard.edu/mpec/K02/K02J54.html
Orthosie S/2001 J 9 Jupiter XXXV Sheppard, Jewitt, Kleyna [http://cfa-www.harvard.edu/mpec/K02/K02J54.html
Euporie S/2001 J 10 Jupiter XXXIV Sheppard, Jewitt, Kleyna [http://cfa-www.harvard.edu/mpec/K02/K02J54.html
Aitne S/2001 J 11 Jupiter XXXI Sheppard, Jewitt, Kleyna [http://cfa-www.harvard.edu/mpec/K02/K02J54.html
August 13, 2002   S/2002 N 3 Neptune Holman, Kavelaars, Grav, Fraser, Milisavljevic [http://cfa-www.harvard.edu/mpec/K03/K03A75.html
August 14, 2002   S/2002 N 1   Neptune Holman, Kavelaars, Grav, Fraser, Milisavljevic [http://cfa-www.harvard.edu/mpec/K03/K03A75.html
S/2002 N 2 Holman, Kavelaars, Grav, Fraser, Milisavljevic [http://cfa-www.harvard.edu/mpec/K03/K03A75.html
December 18 2002/
October 31, 2002 		Arche S/2002 J 1 Jupiter XLIII Sheppard, Meech, Hsieh, Tholen, Tonry [http://cfa-www.harvard.edu/mpec/K02/K02Y22.html
Date Name Designation Image Planet/Number Designation References/Notes
August 25, 2003/
January 18, 1986 		Perdita* S/1986 U 10 Uranus XXV Karkoschka (Recovered by the Hubble Space Telescope) *
October 2003/
August 13, 2001 		Francisco* S/2001 U 3 Uranus XXII Holman, Kavelaars, Milisavljevic, Gladman *
February 5, 2003 Narvi S/2003 S 1 Saturn XXXI Sheppard, Jewitt, Kleyna *
March 4 2003/
February 5, 2003 		Eukelade S/2003 J 1 Jupiter XLVII Sheppard, Jewitt, Kleyna, Fernández, Hsieh [http://cfa-www.harvard.edu/mpec/K03/K03E11.html
  S/2003 J 2   Jupiter Sheppard, Jewitt, Kleyna, Fernández, Hsieh [http://cfa-www.harvard.edu/mpec/K03/K03E11.html
S/2003 J 3 Sheppard, Jewitt, Kleyna, Fernández, Hsieh [http://cfa-www.harvard.edu/mpec/K03/K03E11.html
S/2003 J 4 Sheppard, Jewitt, Kleyna, Fernández, Hsieh [http://cfa-www.harvard.edu/mpec/K03/K03E11.html
March 4 2003/
February 6, 2003 		  S/2003 J 5 Jupiter Sheppard, Jewitt, Kleyna, Fernández, Hsieh [http://cfa-www.harvard.edu/mpec/K03/K03E11.html
Helike S/2003 J 6 Jupiter XLV Sheppard, Jewitt, Kleyna, Fernández, Hsieh [http://cfa-www.harvard.edu/mpec/K03/K03E11.html
March 4 2003/
February 8, 2003 		Aoede S/2003 J 7 Jupiter XLI Sheppard, Jewitt, Kleyna, Fernández, Hsieh [http://cfa-www.harvard.edu/mpec/K03/K03E11.html
Hegemone S/2003 J 8 Jupiter XXXIX Sheppard, Jewitt, Kleyna, Fernández [http://cfa-www.harvard.edu/mpec/K03/K03E15.html
March 7 2003/
February 6, 2003 		  S/2003 J 9   Jupiter Sheppard, Jewitt, Kleyna, Fernández [http://cfa-www.harvard.edu/mpec/K03/K03E29.html
S/2003 J 10 Sheppard, Jewitt, Kleyna, Fernández [http://cfa-www.harvard.edu/mpec/K03/K03E29.html
Kallichore S/2003 J 11 Jupiter XLIV Sheppard, Jewitt, Kleyna, Fernández [http://cfa-www.harvard.edu/mpec/K03/K03E29.html
March 7 2003/
February 8, 2003 		  S/2003 J 12 Jupiter Sheppard, Jewitt, Kleyna, Fernández [http://cfa-www.harvard.edu/mpec/K03/K03E29.html
Date Name Designation Image Planet/Number Designation References/Notes
April 11 2003/
February 9, 2003 		Cyllene S/2003 J 13 Jupiter XLVIII Sheppard, Jewitt, Kleyna *
April 11 2003/
February 8, 2003 		  S/2003 J 14 Jupiter Sheppard, Jewitt, Kleyna *
April 11 2003/
February 6, 2003 		  S/2003 J 15   Jupiter Sheppard, Jewitt, Kleyna, Fernández *
S/2003 J 16 Gladman, Sheppard, Jewitt, Kleyna, Kavelaars, Petit, Allen *
April 11 2003/
February 8, 2003 		  S/2003 J 17 Jupiter Gladman, Sheppard, Jewitt, Kleyna, Kavelaars, Petit, Allen *
April 11 2003/
February 6, 2003 		  S/2003 J 18 Jupiter Gladman, Kavelaars, Petit, Allen, Sheppard, Jewitt, Kleyna *
April 30 2003/
February 6, 2003 		  S/2003 J 19 Jupiter Gladman, Sheppard, Jewitt, Kleyna, Kavelaars, Petit, Allen [http://cfa-www.harvard.edu/mpec/K03/K03G64.html
April 30 2003/
February 9, 2003 		Carpo S/2003 J 20 Jupiter XLVI Sheppard, Gladman, Kavelaars, Petit, Allen, Jewitt, Kleyna [http://cfa-www.harvard.edu/mpec/K03/K03G67.html
May 30 2003/
February 6, 2003 		Mneme S/2003 J 21 Jupiter XL Sheppard, Jewitt, Kleyna, Gladman, Kavelaars, Petit, Allen [http://cfa-www.harvard.edu/mpec/K03/K03K45.html
August 25, 2003 Mab S/2003 U 1   Uranus XXVI Showalter, Lissauer *
Cupid S/2003 U 2 Uranus XXVII Showalter, Lissauer *
August 29, 2003/
August 13, 2001 		Ferdinand* S/2001 U 2 Uranus XXIV 2001: Holman, Kavelaars, Milisavljevic;
2003: Scott S. Sheppard, David C. Jewitt [http://cfa-www.harvard.edu/mpec/K03/K03SA5.html
August 29, 2003/
August 14, 2002 		  S/2002 N 4* Neptune Holman, Kavelaars, Grav, Fraser, Milisavljevic [http://cfa-www.harvard.edu/mpec/K03/K03SA7.html
August 29, 2003 Margaret S/2003 U 3 Uranus XXIII Sheppard, Jewitt [http://cfa-www.harvard.edu/mpec/K03/K03T58.html
September 3 2003/
August 29, 2003 		Psamathe S/2003 N 1 Neptune X Jewitt, Kleyna, Sheppard, Holman, Kavelaars [http://cfa-www.harvard.edu/mpec/K03/K03R19.html
Date Name Designation Image Planet/Number Designation References/Notes
January 25, 2004/
February 9, 2003 		Thelxinoe* S/2003 J 22 Jupiter XLII Sheppard, Jewitt, Kleyna, Gladman, Kavelaars, Petit, Allen *
(From images taken in 2003)
February 4, 2004/
February 6, 2003 		  S/2003 J 23* Jupiter Sheppard, Jewitt, Kleyna, Fernández [http://cfa-www.harvard.edu/mpec/K04/K04B81.html
August 16 2004 /
June 1, 2004 		Saturn XXXII Porco, Charnoz, Brahic, Dones / Cassini-Huygens *
September 9 2004 /
June 21, 2004
September 9 2004 /
June 21?, 2004 		  S/2004 S 4 Saturn Spitale, Porco et al. / Cassini-Huygens *
November 8 2004 /
October 21, 2004 		Polydeuces S/2004 S 5 Saturn XXXIV Porco et al. / Cassini-Huygens
November 8 2004 /
October 28, 2004 		  S/2004 S 6 Saturn Porco et al. / Cassini-Huygens
Date Name Designation Image Planet/Number Designation References/Notes
May 4, 2005 /
December 12, 2004 		  S/2004 S 7   Saturn Sheppard, Jewitt, Kleyna, Marsden
*" target="_blank" >[http://cfa-www.harvard.edu/mpec/K05/K05J13.html
S/2004 S 8
S/2004 S 9
S/2004 S 10
S/2004 S 11
S/2004 S 12
S/2004 S 13
S/2004 S 14
S/2004 S 15
May 4, 2005 /
December 13, 2004 		  S/2004 S 16   Saturn Sheppard, Jewitt, Kleyna, Marsden
*" target="_blank" >[http://cfa-www.harvard.edu/mpec/K05/K05J13.html
S/2004 S 17
S/2004 S 18
May 6 2005 /
May 1, 2005
October 31, 2005/
May 15, 2005 /
June 15, 2005 		Nix S/2005 P 2 Pluto II Weaver, Stern, Mutchler, Steffl, Buie, Merline,
Spencer, Young, Young *
Hydra S/2005 P 1 Pluto III
  S/2004 S 19   Saturn *
  S/2006 S 1   Saturn *
S/2006 S 2
S/2006 S 3
S/2006 S 4
S/2006 S 5
S/2006 S 6
S/2006 S 7
S/2006 S 8
Date Name Designation Image Planet/Number Designation References/Notes

External links

Solar system | Physics lists | Lists of solar system objects | Astronomy timelines | Moons

Chronologie der Entdeckungen von Planeten des Sonnensystems und ihrer natürlichen Satelliten | Chronologie des satellites naturels | 卫星发现时间列表

 

This article is licensed under the GNU Free Documentation License. It uses material from the "Timeline of discovery of Solar System planets and their natural satellites".

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