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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. Dates are annotated with the following symbols:

• i: for date of first imaging (photography, etc.);
• o: for date of first human visual observation, either through telescope or on photographic plate (the true "discovery" moment);
• p: for date of announcement or publication.

*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.

Contents 1 Color code 2 Prehistory 3 17th century 4 18th century 5 19th century 6 20th century 7 21st century 8 External links

[edit] Color code

The planets and their natural satellites are marked in the following colors:

Planets		Dwarf planets
Mercury	Jupiter and satellites	Ceres
Venus	Saturn and satellites	Pluto and satellites
Earth and satellite	Uranus and satellites	Eris and satellite
Mars and satellites	Neptune and satellites

[edit] Prehistory

Prehistory
Date	Name	Designation	Image	Planet/Number Designation	References/Notes
Unknown	Sun		Image:Sun920607.jpg	Star	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			1st Planet	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.
	Venus		Image:Venus-real.jpg	2nd Planet
	Earth		Image:The Earth seen from Apollo 17.jpg	3rd Planet
	Mars		Image:Mars Valles Marineris.jpeg	4th Planet
	Jupiter		Image:Jupiter.jpg	5th Planet
	Saturn			6th Planet
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.

[edit] 17th century

17th century
Date	Name	Designation	Image	Planet/Number Designation	References/Notes
1610s
o: January 7 1610 p: March 13 1610	Callisto			Jupiter IV	Galileo, Sidereus Nuncius, [1]. 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.
	Io		Image:Io highest resolution true color.jpg	Jupiter I
	Europa		Image:Europa-moon.jpg	Jupiter II
o: January 11 1610 p: March 13 1610	Ganymede			Jupiter III
1650s
o: March 25 1655 p: March 5 1656	Titan		Image:Titan in natural color Cassini.jpg	Saturn VI	Huygens, [2]. Huygens first "published" his discovery as an anagram, sent out on June 13, 1655; later published in pamphlet form as De Saturni luna Observatio Nova and in full in Systema Saturnium (July 1659).
1670s
o: October 25 1671 p: 1673	Iapetus		Image:Iapetus by Voyager 2 - enhanced.jpg	Saturn VIII	Cassini, [3]. Cassini published these two discoveries in Découverte de deux nouvelles planètes autour de Saturne (Sébastien Mabre-Cramoisy, Paris, 1673), translated as A Discovery of two New Planets about Saturn, made in the Royal Parisian Observatory by Signor Cassini, Fellow of both the Royal Societys, of England and France; English't out of French., Philosophical Transactions 8 (1673), pp. 5178-5185.
o: December 23, 1672 p: 1673	Rhea			Saturn V
1680s
o: March 21, 1684 p: April 22, 1686	Tethys		Image:Tethys cassini.jpg	Saturn III	Cassini. Cassini published these two discoveries on April 22, 1686, according to 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. Together with his previous two discoveries, Cassini named these satellites Sidera Lodoicea. 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."
	Dione			Saturn IV
Date	Name	Designation	Image	Planet/Number Designation	References/Notes

[edit] 18th century

18th century
Date	Name	Designation	Image	Planet/Number Designation	References/Notes
1780s
o: March 13, 1781 p: April 26, 1781	Uranus			7th Planet	Herschel [4]. 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, Vol. 71, pp. 492-501.
o: January 11, 1787 p: February 15, 1787	Titania			Uranus III	Herschel, An Account of the Discovery of Two Satellites revolving round the Georgian Planet., Philosophical Transactions of the Royal Society of London, Vol. 77, pp. 125-129, 1787
	Oberon			Uranus IV
o: August 28, 1789 [5] p: November 12, 1789	Enceladus		Image:Enceladus from Voyager.jpg	Saturn II	Herschel, Account of the Discovery of a Sixth and Seventh Satellite of the Planet Saturn; with Remarks on the Construction of its Ring, its Atmosphere, its Rotation on an Axis, and its spheroidical Figure, Philosophical Transactions of the Royal Society of London, Vol. 80, pp. 1-20, 1790 (read November 12, 1789).
o: September 17, 1789 p: November 12, 1789	Mimas			Saturn I
Date	Name	Designation	Image	Planet/Number Designation	References/Notes

[edit] 19th century

19th century
Date	Name	Designation	Image	Planet/Number Designation	References/Notes
1800s
o: January 1, 1801 p: 1801	Ceres		Image:Ceres Hubble sing.jpg	8th Planet (1801) Asteroid (1851) Dwarf planet (2006)	Giuseppe Piazzi. He first announced his discovery on January 24, 1801, in letters to fellow astronomers. The first formal publication was the September 1801 issue of the Monatliche Correspondenz.
1840s
o: September 23, 1846 p: November 13, 1846	Neptune		Image:Neptune.jpg	13th Planet (1846) 8th Planet (1851)	Galle and Le Verrier [6] [7]
o: October 10, 1846 p: November 13, 1846	Triton			Neptune I	Lassell [8]
o: September 16, 1848 p: October, 1848	Hyperion			Saturn VII	Bond, Bond, Lassell [9] [10]
1850s
o: October 24, 1851	Ariel			Uranus I	Lassell [11]
	Umbriel			Uranus II
1870s
o: August 12, 1877	Deimos			Mars II	Hall [12] [13] [14] [15]
o: August 18, 1877	Phobos			Mars I
1890s
o: September 9, 1892 p: October 4 1892	Amalthea		Image:Amalthea PIA02532.png	Jupiter V	Barnard [16]
i: August 16, 1898 o: March 17 1899	Phoebe			Saturn IX	Pickering [17] [18]
Date	Name	Designation	Image	Planet/Number Designation	References/Notes

[edit] 20th century

20th century
Date	Name	Designation	Image	Planet/Number Designation	References/Notes
1900s
i: December 3 1904 p: January 6 1905	Himalia (formerly known as Hestia)			Jupiter VI	Perrine [19] [20] [21] [22]
i: January 2, 1905 p: February 27 1905	Elara (formerly known as Hera)			Jupiter VII	Perrine [23] [24] [25]
i: January 27, 1908 o: February 28 1908 p: March 1-6 1908	Pasiphaë (formerly known as Poseidon)			Jupiter VIII	Melotte [26] [27]
1910s
i: July 21, 1914	Sinope (formerly known as Hades)			Jupiter IX	Nicholson [28]
1930s
i: January 23 1930 o: February 18, 1930 p: March 13 1930	Pluto			9th Planet (1930) Dwarf planet (2006)	Tombaugh [29]
i: July 6, 1938	Lysithea (formerly known as Demeter)			Jupiter X	Nicholson [30]
i: July 30, 1938	Carme (formerly known as Pan)			Jupiter XI	Nicholson [31]
1940s
i: February 16, 1948	Miranda			Uranus V	Kuiper [32]
i: May 1, 1949	Nereid			Neptune II	Kuiper [33] [34]
1950s
i: September 28, 1951	Ananke (formerly known as Adrastea)			Jupiter XII	Nicholson [35]
1960s
i: December 15 1966	Janus*	S/1966 S 2		Saturn X	Dollfus [36] [37] [38] [39] [40] [41] (Dollfus may have seen either Janus or Epimetheus)
i: December 18 1966	Epimetheus*			Saturn XI	Walker [42]
1970s
i: September 11, 1974 p: September 20 1974	Leda			Jupiter XIII	Kowal [43] [44] [45] [46]
i: September 30, 1975 p: October 3 1975	Themisto*	S/1975 J 1		Jupiter XVIII	Kowal [47] [48] [49] (Discovered and then lost)
i: April 13, 1978 o: June 22, 1978	Charon	S/1978 P 1	Image:Plutoncharon1.jpg	Pluto I	Christy [50] [51]
i: July 8, 1979 p: November 23 1979	Adrastea	S/1979 J 1		Jupiter XV	Jewitt, Danielson / Voyager 2 [52] [53] [54] [55] [56] [57]
1980s
Date	Name	Designation	Image	Planet/Number Designation	References/Notes
i: February 19, 1980	Janus*	S/1980 S 1		Saturn X	[58] [59] [60] [61] [62] (Confirmed by Voyager 1)
i: February 26, 1980	Epimetheus*	S/1980 S 3		Saturn XI	[63] [64] [65] [66] [67] (Confirmed by Voyager 1)
i: March 1, 1980	Helene	S/1980 S 6		Saturn XII	Laques, Lecacheux [68] [69] [70] [71]
i: March 13, 1980	Calypso	S/1980 S 25		Saturn XIV	Pascu, Seidelmann, Baum, Currie [72] [73]
i: April 8, 1980	Telesto	S/1980 S 13		Saturn XIII	Smith, Reitsema, Larson, Fountain, Voyager 1 [74] [75]
i: March 5, 1979 p: April 28, 1980	Thebe	S/1979 J 2		Jupiter XIV	Synnott, Voyager 1 [76] [77]
i:March 4, 1979 p: August 26, 1980	Metis	S/1979 J 3		Jupiter XVI	Synnott, Voyager 1 [78]
o: October, 1980	Atlas	S/1980 S 28		Saturn XV	Terrile, Voyager 1 [79]
	Prometheus	S/1980 S 27		Saturn XVI	Collins, Voyager 1 [80]
	Pandora	S/1980 S 26		Saturn XVII	Collins, Voyager 1 [81]
i: May 24, 1981 p: 29 May 1981	Larissa*	S/1981 N 1 = S/1989 N 2	Image:Larissa 1.jpg	Neptune VII	Reitsema, Hubbard, Lebofsky, Tholen, Voyager 2 [82] [83]
i: December 30, 1985	Puck	S/1985 U 1		Uranus XV	Synnott, Voyager 2 [84]
i: January 3, 1986	Juliet	S/1986 U 2		Uranus XI	Synnott, Voyager 2 [85] [86]
	Portia	S/1986 U 1		Uranus XII	Synnott, Voyager 2 [87] [88]
i: January 9, 1986	Cressida	S/1986 U 3		Uranus IX	Synnott, Voyager 2 [89] [90]
i: January 13, 1986	Desdemona	S/1986 U 6		Uranus X	Synnott, Voyager 2 [91] [92]
	Rosalind	S/1986 U 4		Uranus XIII	Synnott, Voyager 2 [93] [94]
	Belinda	S/1986 U 5		Uranus XIV	Synnott, Voyager 2 [95] [96]
i: January 20, 1986	Cordelia	S/1986 U 7		Uranus VI	Terrile, Voyager 2 [97]
	Ophelia	S/1986 U 8		Uranus VII	Terrile, Voyager 2 [98]
i: January 23, 1986	Bianca	S/1986 U 9		Uranus VIII	Smith, Voyager 2 [99]
i: June 16, 1989 p: July 7 1989	Proteus	S/1989 N 1		Neptune VIII	Synnott, Voyager 2 [100]
i: July 28, 1989 p: August 2 1989	Despina	S/1989 N 3		Neptune V	Synnott, Voyager 2 [101]
	Galatea	S/1989 N 4		Neptune VI	Synnott, Voyager 2 [102]
i: September 18, 1989 p: September 29 1989	Thalassa	S/1989 N 5		Neptune IV	Terrile, Voyager 2 [103]
	Naiad	S/1989 N 6		Neptune III	Terrile, Voyager 2 [104]
1990s
Date	Name	Designation	Image	Planet/Number Designation	References/Notes
i: August 22, 1981 p: July 16, 1990	Pan*	S/1981 S 13		Saturn XVIII	Showalter, Voyager 2 [105]
i: August 23, 1981 p: April 14, 1995	Pallene* (see below)	S/1981 S 14		Saturn	Gordon, Murray and Beurle [106] [107]
i: September 6, 1997 p: October 31, 1997	Caliban	S/1997 U 1		Uranus XVI	Gladman, Nicholson, Burns, Kavelaars [108]
	Sycorax	S/1997 U 2		Uranus XVII	Gladman, Nicholson, Burns, Kavelaars [109]
i: January 18, 1986 p: May 18, 1999	Perdita*	S/1986 U 10		Uranus XXV	Karkoschka, Voyager 2 [110]
i: July 18, 1999	Setebos	S/1999 U 1		Uranus XIX	Kavelaars, Gladman, Holman, Petit, Scholl [111]
	Stephano	S/1999 U 2		Uranus XX	Gladman, Holman, Kavelaars, Petit, Scholl [112]
	Prospero	S/1999 U 3		Uranus XVIII	Holman, Kavelaars, Gladman, Petit, Scholl [113]
2000s
Date	Name	Designation	Image	Planet/Number Designation	References/Notes
i: October 6, 1999 p: July 20, 2000 /	Callirrhoe	S/1999 J 1		Jupiter XVII	Scotti, Spahr, McMillan, Larsen, Montani, Gleason, Gehrels [114] [115]
i: August 7, 2000	Ymir	S/2000 S 1		Saturn XIX	Gladman [116] [117]
	Paaliaq	S/2000 S 2		Saturn XX	Gladman [118] [119]
	Kiviuq	S/2000 S 5		Saturn XXIV	Gladman [120] [121]
i: September 23, 2000	Siarnaq	S/2000 S 3		Saturn XXIX	Gladman, Kavelaars [122] [123]
	Tarvos	S/2000 S 4		Saturn XXI	Kavelaars, Gladman [124] [125]
	Ijiraq	S/2000 S 6		Saturn XXII	Kavelaars, Gladman [126] [127]
	Thrymr	S/2000 S 7		Saturn XXX	Gladman, Kavelaars [128] [129]
	Skathi	S/2000 S 8		Saturn XXVII	Kavelaars, Gladman [130] [131]
	Mundilfari	S/2000 S 9		Saturn XXV	Gladman, Kavelaars [132] [133]
	Erriapo	S/2000 S 10		Saturn XXVIII	Kavelaars, Gladman [134] [135]
	Suttungr	S/2000 S 12		Saturn XXIII	Gladman, Kavelaars [136] [137]
i: November 9, 2000 p: December 19, 2000	Albiorix	S/2000 S 11		Saturn XXVI	Holman, Spahr [138] [139]
i: November 21, 2000 p: November 25 2000	Themisto*	S/2000 J 1		Jupiter XVIII	Sheppard, Jewitt, Fernández, Magnier (Rediscovered) [140] [141]
Date	Name	Designation	Image	Planet/Number Designation	References/Notes

[edit] 21st century

21st century
Date	Name	Designation	Image	Planet/Number Designation	References/Notes
i: November 23, 2000 p: January 5, 2001	Kalyke	S/2000 J 2		Jupiter XXIII	Sheppard, Jewitt, Fernández, Magnier, Dahm, Evans [142] [143] [144]
	Iocaste	S/2000 J 3		Jupiter XXIV
	Erinome	S/2000 J 4		Jupiter XXV
	Harpalyke	S/2000 J 5		Jupiter XXII
	Isonoe	S/2000 J 6		Jupiter XXVI
	Praxidike	S/2000 J 7		Jupiter XXVII
i: November 25, 2000 p: January 5, 2001	Megaclite	S/2000 J 8		Jupiter XIX	Sheppard, Jewitt, Fernández, Magnier, Dahm, Evans [145] [146]
	Taygete	S/2000 J 9		Jupiter XX
i: November 26, 2000 p: January 5, 2001	Chaldene	S/2000 J 10		Jupiter XXI	Sheppard, Jewitt, Fernández, Magnier, Dahm, Evans [147] [148]
i: December 5, 2000 p: January 5, 2001		S/2000 J 11		Jupiter	Sheppard, Jewitt, Fernández, Magnier, Dahm, Evans [149] [150]
Date	Name	Designation	Image	Planet/Number Designation	References/Notes
i: December 9, 2001 p: May 16, 2002	Hermippe	S/2001 J 3		Jupiter XXX	Sheppard, Jewitt, Kleyna [151] [152]
	Eurydome	S/2001 J 4		Jupiter XXXII
	Sponde	S/2001 J 5		Jupiter XXXVI
	Kale	S/2001 J 8		Jupiter XXXVII
i: December 10, 2001 p: May 16, 2002	Autonoe	S/2001 J 1		Jupiter XXVIII	Sheppard, Jewitt, Kleyna [153] [154]
i: December 11, 2001 p: May 16, 2002	Thyone	S/2001 J 2		Jupiter XXIX	Sheppard, Jewitt, Kleyna [155] [156]
	Pasithee	S/2001 J 6		Jupiter XXXVIII
	Euanthe	S/2001 J 7		Jupiter XXXIII
	Orthosie	S/2001 J 9		Jupiter XXXV
	Euporie	S/2001 J 10		Jupiter XXXIV
	Aitne	S/2001 J 11		Jupiter XXXI
i: August 13, 2001 p: September 30, 2002	Trinculo	S/2001 U 1		Uranus XXI	Holman, Kavelaars, Milisavljevic [157] [158]
i: October 31, 2002 p: December 18 2002	Arche	S/2002 J 1		Jupiter XLIII	Sheppard, Meech, Hsieh, Tholen, Tonry [159] [160]
Date	Name	Designation	Image	Planet/Number Designation	References/Notes
i: July 23, 2002 p: January 13, 2003		S/2002 N 2		Neptune	Holman, Kavelaars, Grav, Fraser, Milisavljevic [161] [162]
i: August 10, 2002 p: January 13, 2003		S/2002 N 1
i: August 11, 2002 p: January 13, 2003		S/2002 N 3
i: February 5, 2003 p: March 4 2003	Eukelade	S/2003 J 1		Jupiter XLVII	Sheppard, Jewitt, Kleyna, Fernández, Hsieh [163] [164]
		S/2003 J 2		Jupiter
		S/2003 J 3
		S/2003 J 4
i: February 6, 2003 p: March 4 2003		S/2003 J 5		Jupiter	Sheppard, Jewitt, Kleyna, Fernández, Hsieh [165] [166]
	Helike	S/2003 J 6		Jupiter XLV
i: February 8, 2003 p: March 4 2003	Aoede	S/2003 J 7		Jupiter XLI	Sheppard, Jewitt, Kleyna, Fernández, Hsieh [167] [168]
	Hegemone	S/2003 J 8		Jupiter XXXIX	Sheppard, Jewitt, Kleyna, Fernández [169] [170]
i: February 6, 2003 p: March 7 2003		S/2003 J 9		Jupiter	Sheppard, Jewitt, Kleyna, Fernández [171] [172]
		S/2003 J 10
	Kallichore	S/2003 J 11		Jupiter XLIV
i: February 8, 2003 p: March 7 2003		S/2003 J 12		Jupiter	Sheppard, Jewitt, Kleyna, Fernández [173] [174]
i: February 5, 2003 p: April 11, 2003	Narvi	S/2003 S 1		Saturn XXXI	Sheppard, Jewitt, Kleyna [175]
i: February 9, 2003 p: April 11 2003	Cyllene	S/2003 J 13		Jupiter XLVIII	Sheppard, Jewitt, Kleyna [176]
i: February 8, 2003 p: April 11 2003		S/2003 J 14		Jupiter	Sheppard, Jewitt, Kleyna [177]
i: February 6, 2003 p: April 11 2003		S/2003 J 15		Jupiter	Sheppard, Jewitt, Kleyna, Fernández [178]
		S/2003 J 16			Gladman, Sheppard, Jewitt, Kleyna, Kavelaars, Petit, Allen [179]
i: February 8, 2003 p: April 11 2003		S/2003 J 17		Jupiter	Gladman, Sheppard, Jewitt, Kleyna, Kavelaars, Petit, Allen [180]
i: February 6, 2003 p: April 11 2003		S/2003 J 18		Jupiter	Gladman, Kavelaars, Petit, Allen, Sheppard, Jewitt, Kleyna [181]
i: February 6, 2003 p: April 30 2003		S/2003 J 19		Jupiter	Gladman, Sheppard, Jewitt, Kleyna, Kavelaars, Petit, Allen [182] [183]
i: February 9, 2003 p: April 30 2003	Carpo	S/2003 J 20		Jupiter XLVI	Sheppard, Gladman, Kavelaars, Petit, Allen, Jewitt, Kleyna [184] [185]
i: February 6, 2003 p: May 30 2003	Mneme	S/2003 J 21		Jupiter XL	Sheppard, Jewitt, Kleyna, Gladman, Kavelaars, Petit, Allen [186] [187]
i: January 18, 1986 p: August 25, 2003	Perdita*	S/1986 U 10		Uranus XXV	Karkoschka (Recovered by the Hubble Space Telescope) [188]
i: August 13, 2001 p: August 29 2003	Ferdinand*	S/2001 U 2		Uranus XXIV	2001: Holman, Kavelaars, Milisavljevic; 2003: Scott S. Sheppard, David C. Jewitt [189] [190]
i: August 14, 2002 p: August 29 2003		S/2002 N 4*		Neptune	Holman, Kavelaars, Grav, Fraser, Milisavljevic [191] [192]
i: August 29, 2003 p: September 3 2003	Psamathe	S/2003 N 1		Neptune X	Jewitt, Kleyna, Sheppard, Holman, Kavelaars [193] [194]
i: August 25, 2003 p: September 25 2003	Mab	S/2003 U 1		Uranus XXVI	Showalter, Lissauer [195]
	Cupid	S/2003 U 2		Uranus XXVII
i: August 13, 2001 p: October 8, 2003	Francisco*	S/2001 U 3		Uranus XXII	Holman, Kavelaars, Milisavljevic, Gladman [196]
i: August 29, 2003 p: October 9 2003	Margaret	S/2003 U 3		Uranus XXIII	Sheppard, Jewitt [197] [198]
Date	Name	Designation	Image	Planet/Number Designation	References/Notes
i: February 9, 2003 p: January 25 2004	Thelxinoe*	S/2003 J 22		Jupiter XLII	Sheppard, Jewitt, Kleyna, Gladman, Kavelaars, Petit, Allen [199] [200] [201] (From images taken in 2003)
i: February 6, 2003 p: February 4, 2004		S/2003 J 23*		Jupiter	Sheppard, Jewitt, Kleyna, Fernández [202] [203]
i: June 1, 2004 p: August 16 2004	Methone*	S/2004 S 1		Saturn XXXII	Porco, Charnoz, Brahic, Dones / Cassini-Huygens [204] [205]
	Pallene	S/2004 S 2 =S/1981 S 14		Saturn XXXIII
i: June 21, 2004 p: September 9, 2004		S/2004 S 3		Saturn	Murray, Porco et al. / Cassini-Huygens [206] [207]
i: June 21?, 2004 p: September 9, 2004		S/2004 S 4		Saturn	Spitale, Porco et al. / Cassini-Huygens [208] [209]
i: October 21, 2004 o: October 24, 2004 p: November 8 2004	Polydeuces	S/2004 S 5	Image:Polydeuces.jpg	Saturn XXXIV	Porco et al. / Cassini-Huygens [210]
i: October 28, 2004 p: November 8, 2004		S/2004 S 6		Saturn	Porco et al. / Cassini-Huygens [211]
Date	Name	Designation	Image	Planet/Number Designation	References/Notes
i: December 12, 2004 p: May 4, 2005		S/2004 S 7		Saturn	Sheppard, Jewitt, Kleyna, Marsden [212] [213] [214] [215]
		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
i: December 13, 2004 p: May 4, 2005		S/2004 S 16		Saturn	Sheppard, Jewitt, Kleyna, Marsden [216] [217] [218] [219]
		S/2004 S 17
		S/2004 S 18
i: May 1, 2005 p: May 6 2005	Daphnis	S/2005 S 1	Image:PIA06237.jpg	Saturn XXXV	Porco et al. / Cassini-Huygens [220]
i: October 21, 2003 o: January 5, 2005 p: July 29, 2005	Eris	2003 UB313		Dwarf planet	Brown, Trujillo and Rabinowitz
i: September 10, 2005 p: October 3, 2005	Dysnomia	S/2005 (2003 UB313) 1		Eris I	Brown, van Dam, Bouchez, Le Mignant, Campbell, Chin, Conrad, Hartman, Johansson, Lafon, Rabinowitz, Stomski, Summers, Trujillo, and Wizinowich [221]
i: May 15, 2005 o: June 15, 2005 p: October 31, 2005	Nix	S/2005 P 2		Pluto II	Weaver, Stern, Mutchler, Steffl, Buie, Merline, Spencer, Young, Young [222]
	Hydra	S/2005 P 1		Pluto III
Date	Name	Designation	Image	Planet/Number Designation	References/Notes
i: December 12, 2004 o: March 6, 2006(?) p: June 26, 2006		S/2004 S 19		Saturn	Sheppard, Jewitt, Kleyna [223] [224]
i: January 4, 2006 o: March 6, 2006(?) p: June 26, 2006		S/2006 S 1		Saturn	Sheppard, Jewitt, Kleyna [225] [226]
		S/2006 S 2
i: January 5, 2006 o: March 6, 2006 (?) p: June 26, 2006		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

[edit] External links

• City of Hudson's Natural Satellite Page
• Gazetteer of Planetary Nomenclature
• Scott Sheppard's Giant Planet Satellite Page
• JPL Natural Satellite Discovery Data
• When Did the asteroids Become Minor Planets?

Solar System Natural Satellites v • d • e</div>
Planetary satellites:	Terran • Martian • Jovian • Saturnian • Uranian • Neptunian
Other satellite systems:	Plutonian • Eridian • Asteroid satellites
Largest satellites:	Ganymede • Titan • Callisto • Io • Earth's Moon • Europa • Triton Titania • Rhea • Oberon • Iapetus • Charon • Umbriel • Ariel • Dione • Tethys
See also: inner satellites • trojans • irregulars • list by diameter • discovery timeline • naming

de:Chronologie der Entdeckungen von Planeten des Sonnensystems und ihrer natürlichen Satelliten

fr:Chronologie des découvertes des satellites naturels zh:卫星发现时间列表