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The timeline of discovery of Solar System planets and their natural satellites charts the progress of the discovery of new bodies over history. Each object is listed in chronological order of its discovery (multiple dates occur when the moments of imaging, observation, and publication differ), identified through its various designations (including temporary and permanent schemes), and the discoverer(s) listed.

Historically the naming of moons did not always match the times of their discovery. Traditionally, the discoverer enjoys the privilege of naming the new object; however, some neglected to do so (E. E. Barnard stated he would "defer any suggestions as to a name" [for Amalthea] "until a later paper"^[1] but never got around to picking one from the numerous suggestions he received) or actively declined (S. B. Nicholson stated "Many have asked what the new satellites [Lysithea and Carme] are to be named. They will be known only by the numbers X and XI, written in Roman numerals, and usually prefixed by the letter J to identify them with Jupiter."^[2]). The issue arose nearly as soon as planetary satellites were discovered: Galileo referred to the four main satellites of Jupiter using numbers while the names suggested by his rival Simon Marius gradually gained universal acceptance. The International Astronomical Union (IAU) eventually started officially approving names in the late 1970s. With the explosion of discoveries in the 21st century, new moons have once again started to be left unnamed even after their numbering, beginning with Jupiter LI and Jupiter LII in 2010.

Key info

In the following tables, planetary satellites are indicated in bold type (e.g. Moon) while planets and dwarf planets, which directly circle the Sun, are in italic type (e.g. Earth). The Sun itself is indicated in roman type. 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;
• p: for date of announcement or publication.

In a few cases, the date is uncertain and is then marked "(?)".

* Note: Moons marked by an asterisk (*) had complicated discoveries. Some took 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 legend

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

It is not known precisely how many objects in the Solar System are dwarf planets; the nine objects listed in the third column are those agreed on by most astronomers, corresponding to a threshold of about 900 km diameter. There may be more; here, all objects with estimated diameter over 700 km are included as dwarf planet candidates, listed in the fourth column. In particular, Salacia and Varda each have a rather large moon, and current estimates for their densities still leave open the possibility that they are dwarf planets.

Designations

• Other designations are synonyms or periphrases sometimes encountered for the object.
• Permanent designations (of planetary satellites) are explained here.
• Temporary designations are explained here.

If a satellite is named, its name is bolded; if it is unnamed, but has a permanent designation, then its permanent designation is bolded; and if it has neither, then its temporary designation is bolded.

Prehistorically discovered

Prehistory
Name	Image	Other designation	Notes
Sun		Star	In the geocentric model, developed in Ancient Greece, then standardized by Ptolemy in the 2nd century, 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, as 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 now not generally considered planets. In the 5th century BCE, the Greek philosophers Philolaus and Hicetas speculated separately that the Earth was a sphere revolving daily around some mystical "central fire" that regulated the universe. Anaxagoras proposed that the Sun is a star around 450 BCE. In the 3rd century BCE, Aristarchus of Samos extended this idea by proposing that the Earth and other planets moved around a definite central object, which he believed to be the Sun though this was not widely accepted until the 17th century and not proven until the 19th.[3]
Earth		3rd Planet	Earth is the third planet from the Sun and the subject of historical misconception for centuries.[4][5] Earth was never formally 'discovered' because it was never an unrecognized entity by humans. However, its shared identity with other bodies as a "planet" is a historically recent discovery. The Earth's position in the Solar System was correctly described in the heliocentric model proposed by Aristarchus of Samos.[6]
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 originally thought to be the only body in that system whose revolution was not centered on the Sun.
Mercury		1st Planet	Mercury, Venus, Mars, Jupiter and Saturn were identified by ancient Babylonian astronomers in the 2nd millennium BC.[7] They were correctly identified as orbiting the Sun by Aristarchus of Samos, and later in Nicolaus Copernicus' heliocentric system[8] (De revolutionibus orbium coelestium, 1543)
Venus		2nd Planet
Mars		4th Planet
Jupiter		5th Planet
Saturn		6th Planet

17th century

17th century
Date	Name	Image	Permanent designation	Discoverer(s) and notes
1610s
o: 7 January 1610 p: 13 March 1610	Ganymede		Jupiter III	Galileo[9][10] discovered the Galilean moons. These satellites were the first celestial objects that were confirmed to orbit an object other than the Sun or Earth. Galileo saw Io and Europa as a single point of light on 7 January 1610; they were seen as separate bodies the following night.[11]
	Callisto		Jupiter IV
o: 8 January 1610 p: 13 March 1610	Io		Jupiter I
	Europa		Jupiter II
1650s
o: 25 March 1655 p: 5 March 1656	Titan		Saturn VI Saturn II (1673–1684), Saturn IV (1686–1789)	Huygens[12] first "published" his discovery as an anagram, sent out on 13 June 1655; later published in pamphlet form as De Saturni luna Observatio Nova and in full in Systema Saturnium[13] (July 1659).
1670s
o: 25 October 1671 p: 1673	Iapetus		Saturn VIII Saturn III (1673–1684), Saturn V (1686–1789), Saturn VII (1789–1848)	Cassini[14]
o: 23 December 1672 p: 1673	Rhea		Saturn V Saturn I (1673–1684), Saturn III (1686–1789)
1680s
o: 21 March 1684 p: 22 April 1686	Tethys		Saturn III Saturn I (1686–1789)	Cassini[15] Together with his previous two discoveries, Cassini named these satellites Sidera Lodoicea. In his work Kosmotheôros[16] (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 Saturn II (1686–1789)
Date	Name	Image	Permanent designation	Discoverer(s) and notes

The numbering of Saturn's moons was adjusted with each new discovery until 1848, in order to continue reflecting their order from their parent planet.

18th century

18th century
Date	Name	Image	Other/Permanent designation	Discoverer(s) and notes
1780s
o: March 13, 1781 p: April 26, 1781	Uranus		7th Planet	Herschel first reported the discovery of Uranus on April 26, 1781, initially believing it to be a comet.[17]
o: January 11, 1787 p: February 15, 1787	Titania		Uranus III Uranus I (1787–1797)	Herschel.[18][19] He later reported four more spurious satellites.[20]
	Oberon		Uranus IV Uranus II (1787–1797)
o: August 28, 1789[21] p: November 12, 1789	Enceladus		Saturn II	Herschel[22]
o: September 17, 1789 p: November 12, 1789	Mimas		Saturn I
Date	Name	Image	Other/Permanent designation	Discoverer(s) and notes

The numbering of Titania and Oberon underwent some confusion, because in 1797, Herschel reported four more satellites of Uranus^[23] that turned out not to exist. Before any more Uranian moons were discovered, William Lassell sometimes adopted Herschel's numbers where Titania and Oberon are respectively Uranus II and IV,^[24] and sometimes called them respectively Uranus I and II.^[25] After he discovered Ariel and Umbriel in 1851, Lassell numbered the four real Uranian satellites then known outward from their parent planet as I (Ariel), II (Umbriel), III (Titania), and IV (Oberon), and this finally stuck.^[26]

19th century

19th century
Date	Name	Image	Other/Permanent designation	Discoverer(s) and notes
1800s
o: January 1, 1801 p: January 24, 1801	Ceres		8th Planet (1801) Asteroid (1851) Dwarf planet (2006)	Giuseppe Piazzi. He first announced his discovery on January 24, 1801, in letters to fellow astronomers.[27] The first formal publication was the September 1801 issue of the Monatliche Correspondenz.[28]
1840s
o: September 23, 1846 p: November 13, 1846	Neptune		13th Planet (1846)[lower-alpha 1] 8th Planet (1851)	Galle and Le Verrier[29][30]
o: October 10, 1846 p: November 13, 1846	Triton		Neptune I	Lassell[31]
o: September 16, 1848 p: October 7, 1848	Hyperion		Saturn VII	Bond, Bond,[32] Lassell[33]
1850s
o: October 24, 1851	Ariel		Uranus I	Lassell[26]
	Umbriel		Uranus II
1870s
o: August 12, 1877	Deimos		Mars II	Hall[34][35][36]
o: August 18, 1877	Phobos		Mars I
1890s
o: September 9, 1892 p: October 4, 1892	Amalthea		Jupiter V	Barnard[1][37]
i: August 16, 1898 o: March 17, 1899	Phoebe		Saturn IX	Pickering[38][39]
Date	Name	Image	Other/Permanent designation	Discoverer(s) and notes

The discovery of Amalthea marks the first time the Roman numerals were not adjusted with the discovery of a new satellite; from then on they reflected order of discovery rather than distance from the parent planet.

20th century

1901–1950

Early 20th century
Date	Name	Image	Permanent designation	Discoverer(s) and notes
1900s
i: December 3, 1904 p: January 6, 1905	Himalia		Jupiter VI	Perrine[37][40][41]
i: January 2, 1905 p: February 27, 1905	Elara		Jupiter VII	Perrine[37][41][42]
i: January 27, 1908 o: February 28, 1908 p: March 1–6, 1908	Pasiphae		Jupiter VIII	Melotte[37][43][44]
1910s
i: July 21, 1914 p: September 17, 1914	Sinope		Jupiter IX	Nicholson[37][45]
1930s
i: January 23, 1930 o: February 18, 1930 p: March 13, 1930	Pluto		9th Planet (1930) Dwarf planet (2006)	Tombaugh[46]
i: July 6, 1938 p: August 1938	Lysithea		Jupiter X	Nicholson[37][47]
i: July 30, 1938 p: August 1938	Carme		Jupiter XI
1940s
i: February 16, 1948 p: June 1949	Miranda		Uranus V	Kuiper[37][48]
i: May 1, 1949 p: August 1949	Nereid		Neptune II	Kuiper[37][49][50]
Date	Name	Image	Permanent designation	Discoverer(s) and notes

1951–2000

Late 20th century
Date	Name	Temporary Designation	Image	Permanent Designation	Discoverer(s) and notes
1950s
i: September 28, 1951 p: December 1951	Ananke	—		Jupiter XII	Nicholson[51][52]
1960s
i: December 15, 1966 p: January 3, 1967	Janus*	S/1966 S 2		Saturn X	Dollfus[51][53][54][55][56] (Dollfus may have seen either Janus or Epimetheus)
i: December 18, 1966 p: January 6, 1967	Epimetheus*	S/1980 S 3		Saturn XI	Walker[51][57]
1970s
i: September 11, 1974 p: September 20, 1974	Leda	—		Jupiter XIII	Kowal[37][58]
i: September 30, 1975 p: October 3, 1975	Themisto*	S/1975 J 1		Jupiter XVIII	Kowal and Roemer[37][59] (Discovered and then lost)
i: April 13, 1978 o: June 22, 1978 p: July 7, 1978	Charon	S/1978 P 1		Pluto I	Christy[60][61]
i: July 8, 1979 p: November 23, 1979	Adrastea	S/1979 J 1		Jupiter XV	Jewitt, Danielson, Voyager 2[54][62][63][64][65][66]
1980s
Date	Name	Temporary designation	Image	Permanent designation	Discoverer(s) and notes
i: February 26, 1980 p: March 6, 1980	Epimetheus*	S/1980 S 3		Saturn XI	[51][56][67][68][69][70] (Confirmed by Voyager 1)
i: March 1, 1980 p: March 6, 1980	Helene	S/1980 S 6		Saturn XII	Laques, Lecacheux[37][67][68][69][70]
i: April 8, 1980 p: April 10, 1980	Telesto	S/1980 S 13		Saturn XIII	Smith, Reitsema, Larson, Fountain, Voyager 1[51][70][71]
i: March 5, 1979 p: April 28, 1980	Thebe	S/1979 J 2		Jupiter XIV	Synnott, Voyager 1[51][63][64]
i: February 19, 1980 p: June 6, 1980	Janus*	S/1980 S 1		Saturn X	[54][56][68][69][70] (Confirmed by Voyager 1)
i: March 13, 1980 p: July 31, 1980	Calypso	S/1980 S 25		Saturn XIV	Pascu, Seidelmann, Baum, Currie[51][69][70]
i:March 4, 1979 p: August 26, 1980	Metis	S/1979 J 3		Jupiter XVI	Synnott, Voyager 1[51][64]
o: October 1980 p: October 31, 1980	Prometheus	S/1980 S 27		Saturn XVI	Collins, Voyager 1[72]
	Pandora	S/1980 S 26		Saturn XVII	Collins, Voyager 1[37][72]
o: October 1980 p: November 13, 1980	Atlas	S/1980 S 28		Saturn XV	Terrile, Voyager 1[51][73]
i: May 24, 1981 p: May 29, 1981	Larissa*	S/1981 N 1 S/1989 N 2		Neptune VII	Reitsema, Hubbard, Lebofsky, Tholen, Voyager 2[37][74][75]
i: December 30, 1985 p: January 9, 1986	Puck	S/1985 U 1		Uranus XV	Synnott, Voyager 2[37][76]
i: January 3, 1986 p: January 16, 1986	Juliet	S/1986 U 2		Uranus XI	Synnott, Voyager 2[37][77][78]
	Portia	S/1986 U 1		Uranus XII
i: January 9, 1986 p: January 16, 1986	Cressida	S/1986 U 3		Uranus IX
i: January 13, 1986 p: January 16, 1986	Desdemona	S/1986 U 6		Uranus X
	Rosalind	S/1986 U 4		Uranus XIII
	Belinda	S/1986 U 5		Uranus XIV
i: January 20, 1986 p: January 27, 1986	Cordelia	S/1986 U 7		Uranus VI	Terrile, Voyager 2[37][79]
	Ophelia	S/1986 U 8		Uranus VII
i: January 23, 1986 p: January 27, 1986	Bianca	S/1986 U 9		Uranus VIII	Smith, Voyager 2[37][79]
i: June 16, 1989 p: July 7, 1989	Proteus	S/1989 N 1		Neptune VIII	Synnott, Voyager 2[37][80]
i: July 28, 1989 p: August 2, 1989	Despina	S/1989 N 3		Neptune V	Synnott, Voyager 2[37][75]
	Galatea	S/1989 N 4		Neptune VI
i: September 18, 1989 p: September 29, 1989	Thalassa	S/1989 N 5		Neptune IV	Terrile, Voyager 2[37][81]
	Naiad	S/1989 N 6		Neptune III
1990s
Date	Name	Temporary designation	Image	Permanent designation	Discoverer(s) and notes
i: August 22, 1981 p: July 16, 1990	Pan*	S/1981 S 13		Saturn XVIII	Showalter, Voyager 2[37][82]
i: August 23, 1981 p: April 14, 1995	Pallene* (see below)	S/1981 S 14		Saturn XXXIII	Gordon, Murray and Beurle[37][83][84]
i: September 6, 1997 p: October 31, 1997	Caliban	S/1997 U 1		Uranus XVI	Gladman, Nicholson, Burns, Kavelaars[37][85]
	Sycorax	S/1997 U 2		Uranus XVII	Gladman, Nicholson, Burns, Kavelaars[85]
i: January 18, 1986 p: May 18, 1999	Perdita*	S/1986 U 10		Uranus XXV	Karkoschka, Voyager 2[37][86]
i: July 18, 1999 p: July 27, 1999	Setebos	S/1999 U 1		Uranus XIX	Kavelaars, Gladman, Holman, Petit, Scholl[37][87]
	Stephano	S/1999 U 2		Uranus XX	Gladman, Holman, Kavelaars, Petit, Scholl[37][87]
i: July 18, 1999 p: September 4, 1999	Prospero	S/1999 U 3		Uranus XVIII	Holman, Kavelaars, Gladman, Petit, Scholl[37][88]
2000s
Date	Name	Temporary designation	Image	Permanent designation	Discoverer(s) and notes
i: October 6, 1999 p: July 20, 2000	Callirrhoe	S/1999 J 1		Jupiter XVII	Scotti, Spahr, McMillan, Larsen, Montani, Gleason, Gehrels[37][89][90]
i: August 7, 2000 p: October 25, 2000	Ymir	S/2000 S 1		Saturn XIX	Gladman[37][91][92]
	Paaliaq	S/2000 S 2		Saturn XX
i: September 23, 2000 p: October 25, 2000	Siarnaq	S/2000 S 3		Saturn XXIX	Gladman, Kavelaars[37][93][94]
	Tarvos	S/2000 S 4		Saturn XXI	Kavelaars, Gladman[37][93][94]
i: August 7, 2000 p: November 18, 2000	Kiviuq	S/2000 S 5		Saturn XXIV	Gladman[37][94][95]
i: September 23, 2000 p: November 18, 2000	Ijiraq	S/2000 S 6		Saturn XXII	Kavelaars, Gladman[37][94][95]
i: November 21, 2000 p: November 25, 2000	Themisto*	S/2000 J 1		Jupiter XVIII	Sheppard, Jewitt, Fernández, Magnier (Rediscovered)[37][96][97]
i: September 23, 2000 p: December 7, 2000	Thrymr	S/2000 S 7		Saturn XXX	Gladman, Kavelaars[37][92][98]
	Skathi	S/2000 S 8		Saturn XXVII	Kavelaars, Gladman[37][92][98]
	Mundilfari	S/2000 S 9		Saturn XXV	Gladman, Kavelaars[37][92][98]
	Erriapus	S/2000 S 10		Saturn XXVIII	Kavelaars, Gladman[37][94][99]
i: November 9, 2000 p: December 19, 2000	Albiorix	S/2000 S 11		Saturn XXVI	Holman, Spahr[37][100][101]
i: September 23, 2000 p: December 22, 2000	Suttungr	S/2000 S 12		Saturn XXIII	Gladman, Kavelaars[37][102][103]
Date	Name	Temporary designation	Image	Permanent designation	Discoverer(s) and notes

21st century

2000s

2000s
Date	Name	Temporary designation	Image	Permanent designation	Discoverer(s) and notes
i: November 23, 2000 p: January 5, 2001	Kalyke	S/2000 J 2		Jupiter XXIII	Sheppard, Jewitt, Fernández, Magnier, Dahm, Evans[37][104][105][106]
	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[37][104][106]
	Taygete	S/2000 J 9		Jupiter XX
i: November 26, 2000 p: January 5, 2001	Chaldene	S/2000 J 10		Jupiter XXI
i: December 5, 2000 p: January 5, 2001	Dia	S/2000 J 11		Jupiter LIII
i: May 22, 2001 p: July 1, 2001	Ixion	(28978) 2001 KX76		Dwarf planet candidate?	Elliot, Wasserman, Buie, Millis, Kern, Qu, Pate[107]
Date	Name	Temporary designation	Image	Permanent designation	Discoverer(s) and notes
i: December 9, 2001 p: May 16, 2002	Hermippe	S/2001 J 3		Jupiter XXX	Sheppard, Jewitt, Kleyna[37][108][109]
	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
i: December 11, 2001 p: May 16, 2002	Thyone	S/2001 J 2		Jupiter XXIX
	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: January 10, 2002 p: July 20, 2002	(unnamed dwarf planet candidate)	(55565) 2002 AW197		Dwarf planet candidate?	Brown, Trujillo, Helin, Hicks, Lawrence, Pravdo[110]
i: August 13, 2001 p: September 30, 2002	Trinculo	S/2001 U 1	—	Uranus XXI	Holman, Kavelaars, Milisavljevic[37][111][112]
i: June 4, 2002 o: June 5, 2002 p: October 7, 2002	Quaoar	(50000) 2002 LM60		Dwarf planet	Trujillo, Brown[113]
i: June 18, 2002 p: November 21, 2002	(unnamed dwarf planet candidate)	(307261) 2002 MS4		Dwarf planet candidate?	Trujillo, Brown[114]
i: October 31, 2002 p: December 18, 2002	Arche	S/2002 J 1		Jupiter XLIII	Sheppard, Meech, Hsieh, Tholen, Tonry[37][115][116]
Date	Name	Temporary designation	Image	Permanent designation	Discoverer(s) and notes
i: July 23, 2002 p: January 13, 2003	Sao	S/2002 N 2		Neptune XI	Holman, Kavelaars, Grav, Fraser, Milisavljevic[37][117][118]
i: August 10, 2002 p: January 13, 2003	Halimede	S/2002 N 1		Neptune IX
i: August 11, 2002 p: January 13, 2003	Laomedeia	S/2002 N 3		Neptune XII
i: January 13, 2003 p: January 26, 2003	(unnamed dwarf planet candidate)	(208996) 2003 AZ84		Dwarf planet candidate?	Trujillo, Brown[119]
i: February 5, 2003 p: March 4, 2003	Eukelade	S/2003 J 1		Jupiter XLVII	Sheppard, Jewitt, Kleyna, Fernández, Hsieh[37][120][121]
	(unnamed moon of Jupiter)	S/2003 J 2		—
	Eupheme	S/2003 J 3		Jupiter LX
	(unnamed moon of Jupiter)	S/2003 J 4		—
i: February 6, 2003 p: March 4, 2003	Eirene	S/2003 J 5	—	Jupiter LVII
	Helike	S/2003 J 6		Jupiter XLV
i: February 8, 2003 p: March 4, 2003	Aoede	S/2003 J 7	—	Jupiter XLI
i: February 8, 2003 p: March 6, 2003	Hegemone	S/2003 J 8	—	Jupiter XXXIX	Sheppard, Jewitt, Kleyna, Fernández[37][122][123]
i: February 6, 2003 p: March 7, 2003	(unnamed moons of Jupiter)	S/2003 J 9		—	Sheppard, Jewitt, Kleyna, Fernández[37][124][125]
		S/2003 J 10
	Kallichore	S/2003 J 11	—	Jupiter XLIV
i: February 8, 2003 p: March 7, 2003	(unnamed moon of Jupiter)	S/2003 J 12		—
i: February 9, 2003 p: April 2, 2003	Cyllene	S/2003 J 13	—	Jupiter XLVIII	Sheppard, Jewitt, Kleyna[37][126][127]
i: February 8, 2003 p: April 3, 2003	Kore	S/2003 J 14		Jupiter XLIX	Sheppard, Jewitt, Kleyna[37][126][128]
i: February 6, 2003 p: April 3, 2003	Philophrosyne	S/2003 J 15	—	Jupiter LVIII	Sheppard, Jewitt, Kleyna, Fernández[126][129]
	(unnamed moon of Jupiter)	S/2003 J 16		—	Gladman, Sheppard, Jewitt, Kleyna, Kavelaars, Petit, Allen[126][130]
i: February 8, 2003 p: April 3, 2003	Herse	S/2003 J 17	—	Jupiter L	Gladman, Sheppard, Jewitt, Kleyna, Kavelaars, Petit, Allen[37][126][131]
i: February 6, 2003 p: April 4, 2003	(unnamed moon of Jupiter)	S/2003 J 18		Jupiter LV	Gladman, Kavelaars, Petit, Allen, Sheppard, Jewitt, Kleyna[37][126][132]
i: February 5, 2003 p: April 8, 2003	Narvi	S/2003 S 1		Saturn XXXI	Sheppard, Jewitt, Kleyna[37][126][133]
i: February 6, 2003 p: April 12, 2003	(unnamed moon of Jupiter)	S/2003 J 19	—	Jupiter LXI	Gladman, Sheppard, Jewitt, Kleyna, Kavelaars, Petit, Allen[134][135]
i: February 9, 2003 p: April 14, 2003	Carpo	S/2003 J 20		Jupiter XLVI	Sheppard, Gladman, Kavelaars, Petit, Allen, Jewitt, Kleyna[37][134][136]
i: February 6, 2003 p: May 29, 2003	Mneme	S/2003 J 21		Jupiter XL	Sheppard, Jewitt, Kleyna, Gladman, Kavelaars, Petit, Allen[37][137][138]
i: January 18, 1986 p: September 3, 2003	Perdita*	S/1986 U 10		Uranus XXV	Karkoschka (Recovered by the Hubble Space Telescope)[37][86][139]
i: August 29, 2003 p: September 3, 2003	Psamathe	S/2003 N 1		Neptune X	Jewitt, Kleyna, Sheppard, Holman, Kavelaars[37][140][141]
i: August 25, 2003 p: September 25, 2003	Mab	S/2003 U 1		Uranus XXVI	Showalter, Lissauer[142]
	Cupid	S/2003 U 2		Uranus XXVII
i: August 13, 2001 p: September 30, 2003	Ferdinand*	S/2001 U 2		Uranus XXIV	2001: Holman, Kavelaars, Milisavljevic; 2003: Sheppard, Jewitt[37][143][144]
i: August 14, 2002 p: September 30, 2003	Neso*	S/2002 N 4		Neptune XIII	Holman, Kavelaars, Grav, Fraser, Milisavljevic[37][143][145]
i: August 13, 2001 p: October 8, 2003	Francisco*	S/2001 U 3	—	Uranus XXII	Holman, Kavelaars, Milisavljevic, Gladman[37][146]
i: August 29, 2003 p: October 9, 2003	Margaret	S/2003 U 3		Uranus XXIII	Sheppard, Jewitt, Holman, Kavelaars[37][147][148]
Date	Name	Temporary designation	Image	Permanent designation	Discoverer(s) and notes
i: February 9, 2003 p: January 24, 2004	Thelxinoe*	S/2003 J 22	—	Jupiter XLII	Sheppard, Jewitt, Kleyna, Gladman, Kavelaars, Petit, Allen[37][149][150]
i: February 6, 2003 p: January 31, 2004	(unnamed moon of Jupiter)	S/2003 J 23*		—	Sheppard, Jewitt, Kleyna, Fernández[151][152]
i: February 17, 2004 p: February 22, 2004	Orcus	(90482) 2004 DW		Dwarf planet	Brown, Trujillo, Rabinowitz[153]
i: November 14, 2003 p: March 15, 2004	Sedna	(90377) 2003 VB12		Dwarf planet	Brown, Trujillo, Rabinowitz[154]
i: June 1, 2004 p: August 16, 2004	Methone	S/2004 S 1		Saturn XXXII	Cassini–Huygens[37][155][156][157]
	Pallene*	S/2004 S 2 =S/1981 S 14		Saturn XXXIII
i: October 21, 2004 o: October 24, 2004 p: November 8, 2004	Polydeuces	S/2004 S 5		Saturn XXXIV	Cassini–Huygens[37][158][159]
Date	Name	Temporary designation	Image	Permanent designation	Discoverer(s) and notes
i: December 12, 2004 p: May 3, 2005	(unnamed moon of Saturn)	S/2004 S 7	—	—	Sheppard, Jewitt, Kleyna, Marsden[37][160]
	Fornjot	S/2004 S 8		Saturn XLII
	Farbauti	S/2004 S 9	—	Saturn XL
	Aegir	S/2004 S 10	—	Saturn XXXVI
	Bebhionn	S/2004 S 11		Saturn XXXVII
	(unnamed moons of Saturn)	S/2004 S 12	—	—
		S/2004 S 13	—
	Hati	S/2004 S 14		Saturn XLIII
	Bergelmir	S/2004 S 15		Saturn XXXVIII
i: December 13, 2004 p: May 3, 2005	Fenrir	S/2004 S 16	—	Saturn XLI
	(unnamed moon of Saturn)	S/2004 S 17	—	—
	Bestla	S/2004 S 18		Saturn XXXIX
i: September 22, 2004 p: May 6, 2005	Salacia	(120347) 2004 SB60		Dwarf planet candidate?	Roe, Brown, Barkume[161]
i: May 1, 2005 p: May 6, 2005	Daphnis	S/2005 S 1		Saturn XXXV	Cassini–Huygens[162]
i: March 7, 2003 o:July 27, 2005 i: May 6, 2004 o: December 28, 2004 p: July 29, 2005	Haumea	(136108) 2003 EL61		Dwarf planet	(Ortiz, Aceituno Castro, Santos-Sanz)[37][163] or (Brown, Trujillo, Rabinowitz)[164] (see the Controversy over the discovery of Haumea)
i: October 21, 2003 o: January 5, 2005 p: July 29, 2005	Eris	(136199) 2003 UB313		Dwarf planet	Brown, Trujillo, Rabinowitz[37][164][165]
o: January 26, 2005 p: July 29, 2005	Hiʻiaka	S/2005 (136108) 1		Haumea I	Brown, Trujillo, Rabinowitz[37][166]
i: March 31, 2005 p: July 29, 2005	Makemake	(136472) 2005 FY9		Dwarf planet	Brown, Trujillo, Rabinowitz[164][167]
o: June 30, 2005 p: July 29, 2005	Namaka	S/2005 (136108) 2		Haumea II	Brown, Trujillo, Rabinowitz[168]
i: September 10, 2005 p: October 3, 2005	Dysnomia	S/2005 (136199) 1		Eris I	Brown, van Dam, Bouchez, Le Mignant, Campbell, Chin, Conrad, Hartman, Johansson, Lafon, Rabinowitz, Stomski, Summers, Trujillo, Wizinowich[169]
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[170]
	Hydra	S/2005 P 1		Pluto III
Date	Name	Temporary designation	Image	Permanent designation	Discoverer(s) and notes
i: June 21, 2003 p: January 7, 2006	Varda	(174567) 2003 MW12		Dwarf planet candidate?	Larsen[171]
i: December 12, 2004 o: March 6, 2006 (?) p: June 26, 2006	Hyrrokkin	S/2004 S 19		Saturn XLIV	Sheppard, Jewitt, Kleyna[37][172][173]
i: January 4, 2006 o: March 6, 2006 (?) p: June 26, 2006	(unnamed moon of Saturn)	S/2006 S 1	—	—	Sheppard, Jewitt, Kleyna[37][173][174]
	Kari	S/2006 S 2		Saturn XLV
i: January 5, 2006 o: March 6, 2006 (?) p: June 26, 2006	(unnamed moon of Saturn)	S/2006 S 3	—	—
	Greip	S/2006 S 4		Saturn LI
	Loge	S/2006 S 5		Saturn XLVI
	Jarnsaxa	S/2006 S 6	—	Saturn L
	Surtur	S/2006 S 7	—	Saturn XLVIII
	Skoll	S/2006 S 8		Saturn XLVII
i: July 21, 2006 p: September 19, 2006	Actaea	S/2006 (120347) 1		Salacia I	Noll, Levison, Stephens, Grundy[175]
i: November 13, 2005 p: February 22, 2007	Vanth	S/2005 (90482) 1		Orcus I	Brown, Suer[176]
i: December 2, 2005 p: February 22, 2007	(unnamed moon of 2003 AZ84)	S/2005 (208996) 1		—	Brown, Suer[176]
i: February 14, 2006 p: February 22, 2007	Weywot	S/2006 (50000) 1		Quaoar I	Brown, Suer[176]
i: January 5, 2006 o: January 16, 2007 (?) p: April 13, 2007	Tarqeq	S/2007 S 1		Saturn LII	Sheppard, Jewitt, Kleyna[37][177][178]
i: January 18, 2007 o: ? p: May 1, 2007	(unnamed moons of Saturn)	S/2007 S 2	—	—	Sheppard, Jewitt, Kleyna[178][179]
		S/2007 S 3	—	—
i: June 2004 o: May 30, 2007 p: July 18, 2007	Anthe	S/2007 S 4		Saturn XLIX	Cassini–Huygens[37][180]
i: July 17, 2007 p: January 7, 2009	Gonggong	(225088) 2007 OR10		Dwarf planet	Schwamb, Brown, Rabinowitz[181]
i: August 15, 2008 p: March 3, 2009	Aegaeon	S/2008 S 1		Saturn LIII	Cassini–Huygens[37][182]
i: July 26, 2009 o: ? p: November 2, 2009	(unnamed moon of Saturn)	S/2009 S 1		—	Cassini–Huygens[183]
Date	Name	Temporary designation	Image	Permanent designation	Discoverer(s) and notes

2010s

2010s
Date	Name	Temporary designation	Image	Permanent designation	Discoverer(s) and notes
i: September 7, 2010 p: June 1, 2011	(unnamed moons of Jupiter)	S/2010 J 1		Jupiter LI	Jacobson, Brozović, Gladman and Alexandersen[184]
		S/2010 J 2		Jupiter LII	Veillet[184]
i: June 28, 2011 p: July 20, 2011	Kerberos	S/2011 (134340) 1		Pluto IV	Showalter[185][186]
i: April 26, 2009 p: September 2011	Ilmarë	S/2009 (174567) 1		Varda I	Noll et al.[187]
i: September 27, 2011 p: January 29, 2012	(unnamed moons of Jupiter)	S/2011 J 1	—	Jupiter LXXII	Sheppard[188]
		S/2011 J 2	—	Jupiter LVI
i: June 26, 2012 p: July 11, 2012	Styx	S/2012 (134340) 1		Pluto V	Showalter[189]
i: November 6, 2004 o: July 1, 2013 p: July 15, 2013	Hippocamp*	S/2004 N 1		Neptune XIV	Showalter et al.[190]
i: March 17, 2013 p: March 31, 2014	(unnamed dwarf planet candidate)	(532037) 2013 FY27		Dwarf planet candidate?	Sheppard, Trujillo[191]
i: April 27, 2015 p: April 25, 2016	(unnamed moon of Makemake)	S/2015 (136472) 1		—	Parker et al.[192][193]
i: September 18, 2010 p: October 17, 2016	Xiangliu	S/2010 (225088) 1		Gonggong I	Marton, Kiss, Müller[194]
i: March 8, 2016 p: June 2, 2017	(unnamed moons of Jupiter)	S/2016 J 1		Jupiter LIV	Sheppard et al.[195][196][197]
i: March 23, 2017 p: June 5, 2017		S/2017 J 1		Jupiter LIX
i: March 9, 2016 p: July 17, 2018	Valetudo	S/2016 J 2		Jupiter LXII
i: February 5, 2016 o: March 23, 2017 p: July 17, 2018	(unnamed moons of Jupiter)	S/2017 J 2		Jupiter LXIII
i: February 5, 2016 o: March 23, 2017 p: July 17, 2018		S/2017 J 3		Jupiter LXIV
i: March 23, 2017 p: July 17, 2018	Pandia	S/2017 J 4		Jupiter LXV
i: March 23, 2017 p: July 17, 2018	(unnamed moons of Jupiter)	S/2017 J 5	—	Jupiter LXVI
i: February 24, 2017 o: March 23, 2017 p: July 17, 2018		S/2017 J 6	—	Jupiter LXVII
i: February 24, 2017 o: March 23, 2017 p: July 17, 2018		S/2017 J 7	—	Jupiter LXVIII
i: March 23, 2017 p: July 17, 2018		S/2017 J 8		Jupiter LXIX
i: February 24, 2017 o: March 23, 2017 p: July 17, 2018		S/2017 J 9	—	Jupiter LXX
i: March 25, 2017 o: May 11, 2018 p: July 17, 2018	Ersa	S/2018 J 1		Jupiter LXXI
i: January 15, 2018 p: August 10, 2018	(unnamed moon of 2013 FY27)	S/2018 (532037) 1		—	Sheppard[198]
i: December 12, 2004 p: October 7, 2019	Gridr	S/2004 S 20	—	Saturn LIV	Sheppard, Jewitt, Kleyna[199]
	(unnamed moon of Saturn)	S/2004 S 21	—	—
	Angrboda	S/2004 S 22	—	Saturn LV
	Skrymir	S/2004 S 23	—	Saturn LVI
	(unnamed moon of Saturn)	S/2004 S 24	—	—
	Gerd	S/2004 S 25	—	Saturn LVII
	(unnamed moon of Saturn)	S/2004 S 26	—	Saturn LVIII
	Eggther	S/2004 S 27	—	Saturn LIX
	(unnamed moons of Saturn)	S/2004 S 28	—	—
		S/2004 S 29	—	Saturn LX
	Beli	S/2004 S 30	—	Saturn LXI
i: December 12, 2004 p: October 8, 2019
	(unnamed moon of Saturn)	S/2004 S 31	—	—
	Gunnlod	S/2004 S 32	—	Saturn LXII
	Thiazzi	S/2004 S 33	—	Saturn LXIII
	(unnamed moon of Saturn)	S/2004 S 34	—	Saturn LXIV
	Alvaldi	S/2004 S 35	—	Saturn LXV
	(unnamed moons of Saturn)	S/2004 S 36	—	—
		S/2004 S 37	—	—
	Geirrod	S/2004 S 38	—	Saturn LXVI
	(unnamed moon of Saturn)	S/2004 S 39	—	—
Date	Name	Temporary designation	Image	Permanent designation	Discoverer(s) and notes

2020s

2020s
Date	Name	Temporary designation	Image	Permanent designation	Discoverer(s) and notes
i: February 5, 2003 p: November 15, 2021	(unnamed moon of Jupiter)	S/2003 J 24*	—	—	Sheppard, Jewitt, Kleyna, Gladman, Veillet[200]
i: July 1, 2019 p: November 16, 2021	(unnamed moon of Saturn)	S/2019 S 1		—	Ashton, Gladman, Petit, Alexandersen[201]
i: September 27, 2011 p: December 20, 2022	(unnamed moons of Jupiter)	S/2011 J 3	—	—	Sheppard[202][203][204][205][206]
i: May 12, 2018 p: December 20, 2022		S/2018 J 2	—	—
i: March 9, 2016 p: January 5, 2023		S/2016 J 3	—	—
i: August 12, 2021 p: January 5, 2023		S/2021 J 1	—	—
i: May 12, 2018 p: January 19, 2023		S/2018 J 3	—	—
i: August 12, 2021 p: January 19, 2023		S/2021 J 2	—	—
		S/2021 J 3	—	—
i: August 14, 2021 p: January 19, 2023		S/2021 J 4	—	—
i: September 5, 2021 p: January 19, 2023		S/2021 J 5	—	—	Sheppard, Tholen, Trujillo[207]
i: May 11, 2018 p: January 20, 2023		S/2018 J 4	—	—	Sheppard[208]
i: September 5, 2021 p: January 20, 2023		S/2021 J 6	—	—	Sheppard, Tholen, Trujillo[209]
i: March 9, 2016 p: January 24, 2023		S/2016 J 4	—	—	Sheppard[210][211][212][213]
i: August 30, 2022 p: February 22, 2023		S/2022 J 1	—	—
i: October 15, 2022 p: February 22, 2023		S/2022 J 2	—	—
i: August 30, 2022 p: February 22, 2023		S/2022 J 3	—	—
i: June 24, 2020 p: May 3, 2023	(unnamed moons of Saturn)	S/2020 S 1	—	—	Sheppard, Jewitt, Kleyna, Ashton, Gladman, Petit, Alexandersen[214][215][216][217][218]
i: February 1, 2006 p: May 3, 2023		S/2006 S 9	—	—
i: January 18, 2007 p: May 3, 2023		S/2007 S 5	—	—
i: December 12, 2004 p: May 3, 2023		S/2004 S 40	—	—	Jewitt, Sheppard, Ashton, Gladman, Petit, Alexandersen[219]
i: July 3, 2019 p: May 3, 2023		S/2019 S 2	—	—	Ashton, Gladman, Petit, Alexandersen[220]
		S/2019 S 3	—	—	Sheppard, Jewitt, Kleyna, Ashton, Gladman, Petit, Alexandersen[221]
i: June 27, 2020 p: May 3, 2023		S/2020 S 2	—	—	Ashton, Gladman, Petit, Alexandersen[222][223]
i: June 24, 2020 p: May 5, 2023		S/2020 S 3	—	—
i: July 3, 2019 p: May 5, 2023		S/2019 S 4	—	—	Ashton, Gladman[224]
i: December 12, 2004 p: May 6, 2023		S/2004 S 41	—	—	Sheppard, Jewitt, Kleyna, Ashton, Gladman, Petit, Alexandersen[225]
i: June 24, 2020 p: May 6, 2023		S/2020 S 4	—	—	Ashton, Gladman, Petit, Alexandersen[226][227]
		S/2020 S 5	—	—
i: January 16, 2007 p: May 6, 2023		S/2007 S 6	—	—	Sheppard, Jewitt, Kleyna, Ashton, Gladman, Petit, Alexandersen[228][229][230]
i: December 12, 2004 p: May 6, 2023		S/2004 S 42	—	—
i: January 5, 2006 p: May 6, 2023		S/2006 S 10	—	—
i: July 3, 2019 p: May 6, 2023		S/2019 S 5	—	—	Ashton, Gladman[231]
i: December 12, 2004 p: May 7, 2023		S/2004 S 43	—	—	Sheppard, Jewitt, Kleyna, Ashton, Gladman, Petit, Alexandersen[232]
		S/2004 S 44	—	—	Sheppard, Jewitt, Kleyna, Ashton, Gladman[233]
i: December 13, 2004 p: May 7, 2023		S/2004 S 45	—	—	Jewitt, Sheppard, Kleyna, Ashton, Gladman, Petit, Alexandersen[234]
i: January 5, 2006 p: May 7, 2023		S/2006 S 11	—	—	Sheppard, Jewitt, Kleyna, Ashton, Gladman, Petit, Alexandersen[235][236]
		S/2006 S 12	—	—
i: July 3, 2019 p: May 8, 2023		S/2019 S 6	—	—	Ashton, Gladman[237]
i: January 6, 2006 p: May 8, 2023		S/2006 S 13	—	—	Sheppard, Jewitt, Kleyna, Ashton, Gladman, Petit, Alexandersen[238]
i: July 1, 2019 p: May 8, 2023		S/2019 S 7	—	—	Ashton, Gladman[239]
i: July 3, 2019 p: May 8, 2023		S/2019 S 8	—	—	Ashton, Gladman, Petit, Alexandersen[240]
i: July 1, 2019 p: May 8, 2023		S/2019 S 9	—	—	Sheppard, Jewitt, Ashton, Gladman[241]
i: December 12, 2004 p: May 8, 2023		S/2004 S 46	—	—	Sheppard, Jewitt, Ashton, Gladman, Petit, Alexandersen[242]
i: July 1, 2019 p: May 8, 2023		S/2019 S 10	—	—	Ashton, Gladman, Petit, Alexandersen[243]
i: December 12, 2004 p: May 8, 2023		S/2004 S 47	—	—	Sheppard, Jewitt, Kleyna, Ashton, Gladman, Petit, Alexandersen[244]
i: July 1, 2019 p: May 8, 2023		S/2019 S 11	—	—	Sheppard, Jewitt, Ashton, Gladman, Petit, Alexandersen[245]
i: January 5, 2006 p: May 8, 2023		S/2006 S 14	—	—	Sheppard, Jewitt, Kleyna, Ashton, Gladman, Petit, Alexandersen[246]
i: July 3, 2019 p: May 9, 2023		S/2019 S 12	—	—	Ashton, Gladman[247]
i: June 27, 2020 p: May 9, 2023		S/2020 S 6	—	—	Ashton, Gladman, Petit, Alexandersen[248][249]
i: July 3, 2019 p: May 9, 2023		S/2019 S 13	—	—
i: January 5, 2005 p: May 10, 2023		S/2005 S 4	—	—	Sheppard, Jewitt, Kleyna, Ashton, Gladman, Petit, Alexandersen[250]
i: January 16, 2007 p: May 10, 2023		S/2007 S 7	—	—	Sheppard, Jewitt, Kleyna[251]
i: March 21, 2007 p: May 10, 2023		S/2007 S 8	—	—	Sheppard, Jewitt, Kleyna, Ashton, Gladman, Petit, Alexandersen[252]
i: June 24, 2020 p: May 10, 2023		S/2020 S 7	—	—	Ashton, Gladman, Petit, Alexandersen[253]
i: July 1, 2019 p: May 10, 2023		S/2019 S 14	—	—	Ashton, Gladman[254]
i: July 1, 2019 p: May 10, 2023		S/2019 S 15	—	—	Ashton, Gladman, Petit, Alexandersen[255]
i: March 9, 2005 p: May 10, 2023		S/2005 S 5	—	—	Sheppard, Jewitt, Kleyna, Ashton, Gladman, Petit, Alexandersen[256]
i: January 5, 2006 p: May 15, 2023		S/2006 S 15	—	—	Sheppard, Jewitt, Kleyna, Ashton, Gladman[257]
i: February 1, 2006 p: May 15, 2023		S/2006 S 16	—	—	Sheppard, Jewitt, Kleyna, Ashton, Gladman, Petit, Alexandersen[258]
i: January 5, 2006 p: May 15, 2023		S/2006 S 17	—	—	Sheppard, Jewitt, Kleyna, Ashton, Gladman[259]
i: December 12, 2004 p: May 15, 2023		S/2004 S 48	—	—	Jewitt, Sheppard, Ashton, Gladman, Petit, Alexandersen[260]
i: June 27, 2020 p: May 15, 2023		S/2020 S 8	—	—	Sheppard, Jewitt, Kleyna, Ashton, Gladman, Petit, Alexandersen[261]
i: December 13, 2004 p: May 15, 2023		S/2004 S 49	—	—	Sheppard, Jewitt, Kleyna, Ashton, Gladman, Petit, Alexandersen[262]
i: December 12, 2004 p: May 15, 2023		S/2004 S 50	—	—	Sheppard, Jewitt, Ashton, Gladman, Petit, Alexandersen[263]
i: January 5, 2006 p: May 15, 2023		S/2006 S 18	—	—	Sheppard, Jewitt, Kleyna, Ashton, Gladman, Petit, Alexandersen[264]
i: July 3, 2019 p: May 15, 2023		S/2019 S 16	—	—	Ashton, Gladman, Petit, Alexandersen[265]
i: July 1, 2019 p: May 15, 2023		S/2019 S 17	—	—	Sheppard, Jewitt, Ashton, Gladman, Petit, Alexandersen[266]
i: July 3, 2019 p: May 15, 2023		S/2019 S 18	—	—	Sheppard, Jewitt, Ashton, Gladman, Petit, Alexandersen[267]
i: July 3, 2019 p: May 15, 2023		S/2019 S 19	—	—	Ashton, Gladman[268]
i: July 1, 2019 p: May 15, 2023		S/2019 S 20	—	—	Ashton, Gladman, Petit, Alexandersen[269]
i: January 5, 2006 p: May 15, 2023		S/2006 S 19	—	—	Sheppard, Jewitt, Kleyna, Ashton, Gladman, Petit, Alexandersen[270][271]
i: December 12, 2004 p: May 15, 2023		S/2004 S 51	—	—
i: June 27, 2020 p: May 15, 2023		S/2020 S 9	—	—	Ashton, Gladman, Petit, Alexandersen[272]
i: December 12, 2004 p: May 15, 2023		S/2004 S 52	—	—	Jewitt, Sheppard, Ashton, Gladman, Petit, Alexandersen[273]
i: March 21, 2007 p: May 16, 2023		S/2007 S 9	—	—	Sheppard, Jewitt, Kleyna, Ashton, Gladman[274]
i: December 12, 2004 p: May 16, 2023		S/2004 S 53	—	—	Sheppard, Jewitt, Kleyna, Ashton, Gladman, Petit, Alexandersen[275]
i: June 27, 2020 p: May 16, 2023		S/2020 S 10	—	—	Ashton, Gladman, Petit, Alexandersen[276]
i: July 3, 2019 p: May 16, 2023		S/2019 S 21	—	—	Sheppard, Jewitt, Kleyna, Ashton, Gladman, Petit, Alexandersen[277][278]
i: January 5, 2006 p: May 23, 2023		S/2006 S 20	—	—
Date	Name	Temporary designation	Image	Permanent designation	Discoverer(s) and notes

See also

• Timeline of Solar System astronomy
• Timeline of Solar System exploration
• Lists of astronomical objects
• Solar System

References