| 19 | 18,900,000 | 20? | 3 years | Nicholson | 1914 | | | | | | SATURN | | | | | | 1. Meimas | 15 | 117,000 | 600 | 0 days, 22 hours, | Herschel | 1789 | | | | 37 minutes | | 2. Enceladus | 14 | 157,000 | 800 | 1 day, 8 hours, | Herschel | 1789 | | | | 53 minutes | | 3. Tethys | 11 | 186,000 | 1200 | 1 day, 21 hours, | Cassini | 1684 | | | | 18 minutes | | 4. Dione | 11 | 238,000 | 1100 | 2 days, 17 hours, | Cassini | 1684 | | | | 41 minutes | | 5. Rhea | 10 | 332,000 | 1500 | 4 days, 12 hours, | Cassini | 1672 | | | | 25 minutes | | 6. Titan | 9 | 771,000 | 3000 | 15 days, 22 hours, | Huygens | 1655 | | | | 41 minutes | | 7. Hyperion | 16 | 934,000 | 500 | 21 days, 6 hours, | Bond | 1848 | | | | 39 minutes | | 8. Japetus | 11 | 2,225,000 | 2000 | 79 days, 7 hours, | Cassini | 1671 | | | | 54 minutes | | 9. Phoebe | 17 | 8,000,000 | 200? | 546 days, 12 hours, | W.H. | 1898 | | | | 0 minutes | Pickering | 10. Themis | 17 | 906,000 | ? | 20 days, 20 hours, | W.H. | 1905 | | | | 24 minutes | Pickering | URANUS | | | | | | 1. Ariel | 15 | 120,000 | 500 | 2 days, 12 hours, | Lassell | 1851 | | | | 29 minutes | | 2. Umbriel | 16 | 167,000 | 400 | 4 days, 3 hours, | Lassell | 1851 | | | | 28 minutes | | 3. Titania | 13 | 273,000 | 1000 | 8 days, 16 hours, | Herschel | 1787 | | | | 56 minutes | | 4. Oberon | 14 | 365,000 | 800 | 13 days, 11 hours, | Herschel | 1787 | | | | 7 minutes | | NEPTUNE | | | | | | 1. Nameless | 13 | 221,500 | 2000 | 5 days, 21 hours, | Lassell | 1846