Saturn Moons (82)

Saturn has 82 moons. Fifty-three moons are confirmed and named and another 29 moons are awaiting confirmation of discovery and official naming.

1. Mimas	2. Enceladus	3. Tethys	4. Dione	5. Rhea	6. Titan
7. Hyperion	8. Iapetus	9. Phoebe	10. Janus	11. Epimetheus	12. Helene
13. Telesto	14. Calypso	15. Atlas	16. Prometheus	17. Pandora	18. Pan
19. Ymir	20. Paaliaq	21. Tarvos	22. Ijiraq	23. Suttungr	24. Kiviuq
25. Mundilfari	26. Albiorix	27. Skathi	28. Erriapus	29. Siarnaq	30. Thrymr
31. Narvi	32. Methone	33. Pallene	34. Polydeuces	35. Daphnis	36. Aegir
37. Bebhionn	38. Bergelmir	39. Bestla	40. Farbauti	41. Fenrir	42. Fornjot
43. Hati	44. Hyrrokkin	45. Kari	46. Loge	47. Skoll	48. Surtur
49. Anthe	50. Jarnsaxa	51. Greip	52. Tarqeq	53. Aegaeon	54. S/2004 S7
55. S/2004 S12	56. S/2004 S13	57. S/2004 S17	58. S/2004 S20	59. S/2004 S21	60. S/2004 S22
61. S/2004 S23	62. S/2004 S24	63. S/2004 S25	64. S/2004 S26	65. S/2004 S27	66. S/2004 S28
67. S/2004 S29	68. S/2004 S30	69. S/2004 S31	70. S/2004 S32	71. S/2004 S33	72. S/2004 S34
73. S/2004 S35	74. S/2004 S36	75. S/2004 S37	76. S/2004 S38	77. S/2004 S39	78. S/2006 S1
79. S/2006 S3	80. S/2007 S2	81. S/2007 S3	82. S/2009 S1

Name	Mimas
Discovery date	1789 (William Herschel)
Semi-major axis	185 600 km
Diameter	397 km
Orbital period (Length of a year)	0.942 Earth days

Mimas with Herschel Crater taken by Cassini. Photo: NASA/JPL/Space Science Institute

Name	Enceladus
Discovery date	1789 (William Herschel)
Semi-major axis	237 948 km
Diameter	504.2 km
Orbital period (Length of a year)	1.37 Earth days

Enceladus was taken by Cassini on October 9, 2008. Photo: NASA/JPL/Space Science Institute

Name	Tethys
Discovery date	1684 (Giovanni D. Cassini)
Semi-major axis	294 619 km
Diameter	1062 km
Orbital period (Length of a year)	1.888 Earth days

Tethys with the crater Odysseus taken by Cassini. Photo: NASA/JPL/Space Science Institute

Name	Dione
Discovery date	1684 (Giovanni D. Cassini)
Semi-major axis	377 400 km
Diameter	1122 km
Orbital period (Length of a year)	2.737 Earth days

Dione taken by the Cassini spacecraft. Photo: NASA/JPL-Caltech/Space Science Institute

Name	Rhea
Discovery date	1672 (Giovanni D. Cassini)
Semi-major axis	527 100 km
Diameter	1528 km
Orbital period (Length of a year)	4.518 Earth days

Rhea taken by the Cassini spacecraft. Photo: NASA/JPL-Caltech/Space Science Institute

Name	Titan
Discovery date	1655 (C. Huygens)
Semi-major axis	1 221 900 km
Diameter	5150 km
Orbital period (Length of a year)	15.95 Earth days

Cassini looks at the night side of Saturn’s largest moon Titan and sees sunlight scattered through Titan’s atmosphere, forming a ring of colours. Photo: NASA/JPL-Caltech/Space Science Institute

Name	Hyperion
Discovery date	1848 (W. & G. Bond, W. Lassell)
Semi-major axis	1 464 100 km
Diameter	360 × 280 × 225 km
Orbital period (Length of a year)	21.28 Earth days

False color image of Hyperion was taken by Cassini on September 26, 2005. Photo: NASA/JPL-Caltech/Space Science Institute

Name	Iapetus
Discovery date	1671 (Giovanni D. Cassini)
Semi-major axis	3 561 000 km
Diameter	1436 km
Orbital period (Length of a year)	79.33 Earth days

These two pictures of Iapetus show the extreme brightness dichotomy on the surface of this peculiar Saturnian moon. The left-hand panel shows the moon’s leading hemisphere and the right-hand panel shows the moon’s trailing side. . Photo: NASA/JPL-Caltech/Space Science Institute

Name	Phoebe
Discovery date	1899 (William Henry Pickering)
Semi-major axis	12 952 000 km
Diameter	213 km
Orbital period (Length of a year)	550.48 Earth days

Phoebe was taken during Cassini’s flyby on June 11, 2004. Photo: NASA/JPL

Name	Janus
Discovery date	1966 (Audouin Dollfus)
Semi-major axis	151 460 km
Diameter	178,8 km
Orbital period (Length of a year)	0.695 Earth days

Janus taken by Cassini on March 27, 2021. Photo: NASA/JPL-Caltech/Space Science Institute

Name	Epimetheus
Discovery date	1966/1978 (R. Walker, J. Fountain, S. Larson)
Semi-major axis	151 410 km
Diameter	116 km
Orbital period (Length of a year)	0.694 Earth days

Epimetheus was taken by the Cassini spacecraft on December 6, 20215. Photo: NASA/JPL-Caltech/Space Science Institute

Name	Helene
Discovery date	1980 (P. Laques, J. Lecacheus)
Semi-major axis	377 420 km
Diameter	35.2 km
Orbital period (Length of a year)	2.737 Earth days

Helene was taken by Cassini on March 3, 2010. Photo: NASA/JPL/Space Science Institute

Name	Telesto
Discovery date	1980 (B. Smith, H. Reitsema, S. Larson, J. Fountain)
Semi-major axis	294 620 km
Diameter	24.8 km
Orbital period (Length of a year)	1.887 Earth days

Telesto was taken by Cassini in October 2005. Photo: NASA/JPL/Space Science Institute

Name	Calypso
Discovery date	1980 (D. Pascu, P.K. Seidelmann, W. Baum, D. Currie)
Semi-major axis	294 619 km
Diameter	21.4 km
Orbital period (Length of a year)	1.88 Earth days

Calypso was taken in February 2010 by Cassini. Photo: NASA/JPL/Space Science Institute

Name	Atlas
Discovery date	1980 (R. Terrile, Voyager 1)
Semi-major axis	137 670 km
Diameter	30.6 km
Orbital period (Length of a year)	0.602 Earth days

Name	Prometheus
Discovery date	1980 (S. A. Collins, D. Carlson, Voyager 1)
Semi-major axis	139 400 km
Diameter	86.2 km
Orbital period (Length of a year)	0.613 Earth days

Prometheus was taken by the Cassini spacecraft on December 6, 2015. Photo: NASA/JPL-Caltech/Space Science Institute

Name	Pandora
Discovery date	1980 (S. A. Collins, D. Carlson, Voyager 1)
Semi-major axis	141 700 km
Diameter	80.6 km
Orbital period (Length of a year)	0.629 Earth days

Cassini’s best close-up of Saturn’s moon Pandora. Photo: NASA/JPL

Name	Pan
Discovery date	1990 (Mark R. Showalter, Voyager 2)
Semi-major axis	133 580 km
Diameter	28.2 km
Orbital period (Length of a year)	0.575 Earth days

These two images from Pan’s Cassini spacecraft show how the spacecraft’s perspective changed when it passed Saturn’s moon at a distance of 24,600 kilometres on March 7, 2017. This was Cassini’s closest encounter with Pan to date, significantly improving the accuracy of detail compared to previous observations. Photo: NASA/JPL-Caltech/Space Science Institute

Name	Ymir
Discovery date	2000 (Brett Gladman et al.)
Semi-major axis	23 130 000 km
Diameter	~ 18 km
Orbital period (Length of a year)	1315.6 Earth days

Name	Paaliaq
Discovery date	2000 (Brett Gladman et al.)
Semi-major axis	15 198 000 km
Diameter	~ 22 km
Orbital period (Length of a year)	686.9 Earth days

Name	Tarvos
Discovery date	2000 (Brett Gladman et al.)
Semi-major axis	17 980 000 km
Diameter	~ 15 km
Orbital period (Length of a year)	926 Earth days

Name	Ijiraq
Discovery date	2000 (Brett Gladman et al.)
Semi-major axis	11 400 000 km
Diameter	~ 12 km
Orbital period (Length of a year)	451 Earth days

Name	Suttungr
Discovery date	2000 (Brett Gladman et al.)
Semi-major axis	19 500 000 km
Diameter	~ 7 km
Orbital period (Length of a year)	1017 Earth days

Name	Kiviuq
Discovery date	2000 (Brett Gladman et al.)
Semi-major axis	11 300 000 km
Diameter	~ 16 km
Orbital period (Length of a year)	449 Earth days

Name	Mundilfari
Discovery date	2000 (Brett Gladman et al.)
Semi-major axis	18 400 000 km
Diameter	~ 7 km
Orbital period (Length of a year)	953 Earth days

Name	Albiorix
Discovery date	2000 (Brett Gladman et al.)
Semi-major axis	16 400 000 km
Diameter	~ 32 km
Orbital period (Length of a year)	783.5 Earth days

Name	Skathi
Discovery date	2000 (Brett Gladman et al.)
Semi-major axis	15 600 000 km
Diameter	~ 8 km
Orbital period (Length of a year)	728 Earth days

Name	Erriapus
Discovery date	2000 (Brett Gladman et al.)
Semi-major axis	17 600 000 km
Diameter	~ 10 km
Orbital period (Length of a year)	871 Earth days

Name	Siarnaq
Discovery date	2000 (Brett Gladman et al.)
Semi-major axis	18 100 000 km
Diameter	~ 40 km
Orbital period (Length of a year)	896 Earth days

Name	Thrymr
Discovery date	2000 (Brett Gladman et al.)
Semi-major axis	20 400 000 km
Diameter	~ 7 km
Orbital period (Length of a year)	1094 Earth days

Name	Narvi
Discovery date	2003 (Scott S. Sheppard et al.)
Semi-major axis	19 400 000 km
Diameter	~ 7 km
Orbital period (Length of a year)	1004 Earth days

Name	Methone
Discovery date	2004 (Sébastien Charnoz)
Semi-major axis	194 000 km
Diameter	3.2 km
Orbital period (Length of a year)	1.0 Earth days

Methone taken by the Cassini spacecraft. Photo: NASA/JPL-Caltech/Space Science Institute

Name	Pallene
Discovery date	2004 (Sébastien Charnoz)
Semi-major axis	212 000 km
Diameter	5 km
Orbital period (Length of a year)	1.15 Earth days

Pallene in front of the planet Saturn taken by the Cassini spacecraft. This image, which has not been validated or calibrated, was taken on October 16, 2010. Photo: NASA/JPL/Space Science Institute

Name	Polydeuces
Discovery date	2004 (Carolyn Porco et al.)
Semi-major axis	377 400 km
Diameter	~ 2,6 km
Orbital period (Length of a year)	2.7 Earth days

Enlarged view of Polydeuces discovered on Cassini’s recordings. Photo: NASA/JPL/Space Science Institute

Name	Daphnis
Discovery date	2004 (Carolyn Porco et al.)
Semi-major axis	136 500 km
Diameter	7.6 km
Orbital period (Length of a year)	0.59 Earth days

Cassini image of Daphnis with shadows and wave patterns. Photo: NASA/JPL/Space Science Institute

Name	Ageir
Discovery date	2004 (Scott S. Sheppard et al.)
Semi-major axis	20 700 000 km
Diameter	~ 6 km
Orbital period (Length of a year)	1118 Earth days

Name	Bebhionn
Discovery date	2004 (Scott S. Sheppard et al.)
Semi-major axis	17 100 000 km
Diameter	~ 6 km
Orbital period (Length of a year)	835 Earth days

Name	Bergelmir
Discovery date	2004 (Scott S. Sheppard et al.)
Semi-major axis	19 300 000 km
Diameter	~ 6 km
Orbital period (Length of a year)	1006 Earth days

Name	Bestla
Discovery date	2004 (Scott S. Sheppard et al.)
Semi-major axis	20 300 000 km
Diameter	~ 7 km
Orbital period (Length of a year)	1087 Earth days

Name	Farbauti
Discovery date	2004 (Scott S. Sheppard et al.)
Semi-major axis	20 400 000 km
Diameter	~ 5 km
Orbital period (Length of a year)	1087 Earth days

Name	Fenrir
Discovery date	2004 (Scott S. Sheppard et al.)
Semi-major axis	22 500 000 km
Diameter	~ 4 km
Orbital period (Length of a year)	1260 Earth days

Name	Fornjot
Discovery date	2004 (Scott S. Sheppard et al.)
Semi-major axis	25 200 000 km
Diameter	~ 6 km
Orbital period (Length of a year)	1492 Earth days

Name	Hati
Discovery date	2004 (Scott S. Sheppard et al.)
Semi-major axis	19 800 000 km
Diameter	~ 6 km
Orbital period (Length of a year)	1039 Earth days

Name	Hyrrokkin
Discovery date	2004 (Scott S. Sheppard et al.)
Semi-major axis	18 400 000 km
Diameter	~ 6 km
Orbital period (Length of a year)	932 Earth days

Name	Kari
Discovery date	2006 (Scott S. Sheppard et al.)
Semi-major axis	22 100 000 km
Diameter	~ 6 km
Orbital period (Length of a year)	1231 Earth days

Name	Loge
Discovery date	2006 (Scott S. Sheppard et al.)
Semi-major axis	23 000 000 km
Diameter	~ 6 km
Orbital period (Length of a year)	1311 Earth days

Name	Skoll
Discovery date	2006 (Scott S. Sheppard et al.)
Semi-major axis	17 700 000 km
Diameter	~ 6 km
Orbital period (Length of a year)	878 Earth days

Name	Surtur
Discovery date	2006 (Scott S. Sheppard et al.)
Semi-major axis	22 900 000
Diameter	~ 6 km
Orbital period (Length of a year)	1296 Earth days

Name	Anthe
Discovery date	2007 (Cassini Imaging Science Team)
Semi-major axis	197 700 km
Diameter	1.8 km
Orbital period (Length of a year)	1.03 Earth days

Name	Jarnsaxa
Discovery date	2006 (Scott S. Sheppard et al.)
Semi-major axis	19 400 000 km
Diameter	~ 6 km
Orbital period (Length of a year)	1007 Earth days

Name	Greip
Discovery date	2006 (Scott S. Sheppard et al.)
Semi-major axis	18 400 000 km
Diameter	~ 6 km
Orbital period (Length of a year)	921 Earth days

Name	Tarqeq
Discovery date	2007 (Scott S. Sheppard et al.)
Semi-major axis	17 900 000 km
Diameter	~ 6 km
Orbital period (Length of a year)	894 Earth days

Name	Aegaeon
Discovery date	2008 (Cassini Imaging Science Team)
Semi-major axis	167 500 km
Diameter	~ 0.6 km
Orbital period (Length of a year)	0.80 Earth days

These three images, which Cassini took within about 10 minutes, show the path of Aegaeon in a bright arc of Saturn’s faint G-ring. Photo: NASA/JPL/Space Science Institute

Name	S/2004 S7
Discovery date	2004 (Scott S. Sheppard et al.)
Semi-major axis	21 000 000 km
Diameter	~ 6 km
Orbital period (Length of a year)	1140 Earth days

Name	S/2004 S12
Discovery date	2004 (Scott S. Sheppard et al.)
Semi-major axis	19 900 000 km
Diameter	~ 5 km
Orbital period (Length of a year)	1046 Erdentage

Name	S/2004 S13
Discovery date	2004 (Scott S. Sheppard et al.)
Semi-major axis	18 400 000 km
Diameter	~ 6 km
Orbital period (Length of a year)	934 Earth days

Name	S/2004 S17
Discovery date	2004 (Scott S. Sheppard et al.)
Semi-major axis	19 400 000 km
Diameter	~ 4 km
Orbital period (Length of a year)	1015 Earth days

Name	S/2004 S20
Discovery date	2004 (Scott S. Sheppard et al.)
Semi-major axis	19 400 000 km
Diameter	~ 4 km
Orbital period (Length of a year)	1010 Earth days

Name	S/2004 S21
Discovery date	2004 (Scott S. Sheppard et al.)
Semi-major axis	22 600 000 km
Diameter	~ 3 km
Orbital period (Length of a year)	1272 Earth days

Name	S/2004 S22
Discovery date	2004 (Scott S. Sheppard et al.)
Semi-major axis	20 600 000 km
Diameter	~ 3 km
Orbital period (Length of a year)	1106.8 Earth days

Name	S/2004 S23
Discovery date	2004 (Scott S. Sheppard et al.)
Semi-major axis	21 100 000 km
Diameter	~ 4 km
Orbital period (Length of a year)	1149 Earth days

Name	S/2004 S24
Discovery date	2004 (Scott S. Sheppard et al.)
Semi-major axis	22 900 000 km
Diameter	~ 3 km
Orbital period (Length of a year)	1294 Earth days

Name	S/2004 S25
Discovery date	2004 (Scott S. Sheppard et al.)
Semi-major axis	21 200 000 km
Diameter	~ 3 km
Orbital period (Length of a year)	1328 Earth days

Name	S/2004 S26
Discovery date	2004 (Scott S. Sheppard et al.)
Semi-major axis	26 600 000 km
Diameter	~ 4 km
Orbital period (Length of a year)	1626 Earth days

Name	S/2004 S27
Discovery date	2004 (Scott S. Sheppard et al.)
Semi-major axis	20 000 000 km
Diameter	~ 4 km
Orbital period (Length of a year)	1054 Earth days

Name	S/2004 S28
Discovery date	2004 (Scott S. Sheppard et al.)
Semi-major axis	22 000 000 km
Diameter	~ 4 km
Orbital period (Length of a year)	1220 Earth days

Name	S/2004 S29
Discovery date	2004 (Scott S. Sheppard et al.)
Semi-major axis	17 000 000 km
Diameter	~ 4 km
Orbital period (Length of a year)	826 Earth days

Name	S/2004 S30
Discovery date	2004 (Scott S. Sheppard et al.)
Semi-major axis	20 800 000 km
Diameter	~ 3 km
Orbital period (Length of a year)	1121 Earth days

Name	S/2004 S31
Discovery date	2004 (Scott S. Sheppard et al.)
Semi-major axis	17 500 000 km
Diameter	~ 4 km
Orbital period (Length of a year)	869 Earth days

Name	S/2004 S32
Discovery date	2004 (Scott S. Sheppard et al.)
Semi-major axis	21 200 000 km
Diameter	~ 4 km
Orbital period (Length of a year)	1153 Earth days

Name	S/2004 S33
Discovery date	2004 (Scott S. Sheppard et al.)
Semi-major axis	24 100 000 km
Diameter	~ 4 km
Orbital period (Length of a year)	1403 Earth days

Name	S/2004 S34
Discovery date	2004 (Scott S. Sheppard et al.)
Semi-major axis	24 300 000 km
Diameter	~ 3 km
Orbital period (Length of a year)	1414 Earth days

Name	S/2004 S35
Discovery date	2004 (Scott S. Sheppard et al.)
Semi-major axis	22 400 000 km
Diameter	~ 4 km
Orbital period (Length of a year)	1252 Earth days

Name	S/2004 S36
Discovery date	2004 (Scott S. Sheppard et al.)
Semi-major axis	23 200 000 km
Diameter	~ 3 km
Orbital period (Length of a year)	1318 Earth days

Name	S/2004 S37
Discovery date	2004 (Scott S. Sheppard et al.)
Semi-major axis	15 900 000 km
Diameter	~ 4 km
Orbital period (Length of a year)	748 Earth days

Name	S/2004 S38
Discovery date	2004 (Scott S. Sheppard et al.)
Semi-major axis	21 900 000 km
Diameter	~ 4 km
Orbital period (Length of a year)	1210 Earth days

Name	S/2004 S39
Discovery date	2004 (Scott S. Sheppard et al.)
Semi-major axis	23 500 000 km
Diameter	~ 2 km
Orbital period (Length of a year)	1351 Earth days

Name	S/2006 S1
Discovery date	2006 (Scott S. Sheppard et al.)
Semi-major axis	18 790 000 km
Diameter	~ 6 km
Orbital period (Length of a year)	963 Earth days

Name	S/2006 S3
Discovery date	2006 (Scott S. Sheppard et al.)
Semi-major axis	22 100 000 km
Diameter	~ 6 km
Orbital period (Length of a year)	1227 Earth days

Name	S/2007 S2
Discovery date	2007 (Scott S. Sheppard et al.)
Semi-major axis	16 560 000 km
Diameter	~ 6 km
Orbital period (Length of a year)	793 Earth days

Name	S/2007 S3
Discovery date	2007 (Scott S. Sheppard et al.)
Semi-major axis	20 500 000 km
Diameter	~ 5 km
Orbital period (Length of a year)	992 Earth days

Name	S/2009 S1
Discovery date	2009 (Cassini Imaging Science Team)
Semi-major axis	117 100 km
Diameter	~ 0.3 km
Orbital period (Length of a year)	~ 0.4725 Earth days

The bright point with the long shadow in the center of the image is S/2009 S1. On the right in the picture the Cassini division. Photo: NASA/JPL/Space Science Institute