Table
| ‡ Major moons |
♠ Retrograde moons |
The Uranian moons are listed here by orbital period, from shortest to longest. Moons massive enough for their surfaces to have collapsed into a spheroid are highlighted in light blue and bolded. Irregular moons with prograde orbits are shown in light grey, those with retrograde orbits in dark grey.
| Order |
Label |
Name | Pronunciation |
Image | Diameter (km) |
Mass (×1018 kg) |
Semi-major axis (km) |
Orbital period (d) |
Inclination (°) |
Eccentricity |
Discovery year |
Discoverer |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 06 !VI | Cordelia | kɔrˈdiːliə | 0040 !40 ± 6 (50 × 36) |
000004 !0.044 | 00049000 !49,770 | 0000.33 !0.335034 | 000.084 !0.08479° | 0.00026 | 1986 | Terrile (Voyager 2) |
|
| 2 | 07 !VII | Ophelia | ɵˈfiːliə | 0043 !43 ± 8 (54 × 38) |
000005 !0.053 | 00053000 !53,790 | 0000.37 !0.376400 | 000.103 !0.1036° | 0.00992 | 1986 | Terrile (Voyager 2) |
|
| 3 | 08 !VIII | Bianca | biːˈɒŋkə | 0051 !51 ± 4 (64 × 46) |
000009 !0.092 | 00059000 !59,170 | 0000.43 !0.434579 | 000.193 !0.193° | 0.00092 | 1986 | Smith (Voyager 2) |
|
| 4 | 09 !IX | Cressida | ˈkrɛsɨdə | 0080 !80 ± 4 (92 × 74) |
000034 !0.34 | 00061000 !61,780 | 0000.46 !0.463570 | 000.006 !0.006° | 0.00036 | 1986 | Synnott (Voyager 2) |
|
| 5 | 10 !X | Desdemona | ˌdɛzdɨˈmoʊnə | 0064 !64 ± 8 (90 × 54) |
000018 !0.18 | 00062000 !62,680 | 0000.47 !0.473650 | 000.111 !0.11125° | 0.00013 | 1986 | Synnott (Voyager 2) |
|
| 6 | 11 !XI | Juliet | ˈdʒuːli.ɨt | 0094 !94 ± 8 (150 × 74) |
000056 !0.56 | 00064000 !64,350 | 0000.49 !0.493065 | 000.065 !0.065° | 0.00066 | 1986 | Synnott (Voyager 2) |
|
| 7 | 12 !XII | Portia | ˈpɔrʃə | 0135 !135 ± 8 (156 × 126) |
000170 !1.70 | 00066000 !66,090 | 0000.51 !0.513196 | 000.059 !0.059° | 0.00005 | 1986 | Synnott (Voyager 2) |
|
| 8 | 13 !XIII | Rosalind | ˈrɒzəlɨnd | 0072 !72 ± 12 | 000025 !0.25 | 00069000 !69,940 | 0000.55 !0.558460 | 000.279 !0.279° | 0.00011 | 1986 | Synnott (Voyager 2) |
|
| 9 | 27 !XXVII | Cupid | ˈkjuːpɨd | 0018 !~18 | 000000.38 !0.0038 | 00074000 !74,800 | 0000.61 !0.618 | 000.1 !0.1° | 0.0013 | 2003 | Showalter and Lissauer |
|
| 10 | 14 !XIV | Belinda | bɨˈlɪndə | 0090 !90 ± 16 (128 × 64) |
000049 !0.49 | 00075000 !75,260 | 0000.62 !0.623527 | 000.031 !0.031° | 0.00007 | 1986 | Synnott (Voyager 2) |
|
| 11 | 25 !XXV | Perdita | ˈpɜrdɨtə | 0030 !30 ± 6 | 000002 !0.018 | 00076000 !76,400 | 0000.63 !0.638 | 000 !0.0° | 0.0012 | 1999 | Karkoschaka (Voyager 2) |
|
| 12 | 15 !XV | Puck | ˈpʌk | 0162 !162 ± 4 | 000290 !2.90 | 00086000 !86,010 | 0000.76 !0.761833 | 000.319 !0.3192° | 0.00012 | 1985 | Synnott (Voyager 2) |
|
| 13 | 26 !XXVI | Mab | ˈmæb | 0025 !~25 | 000001 !0.01 | 00097000 !97,700 | 0000.92 !0.923 | 000.133 !0.1335° | 0.0025 | 2003 | Showalter and Lissauer |
|
| 14 | 05 !V | ‡Miranda | mɨˈrændə | 0470 !471.6 ± 1.4 (481 × 468 × 466) |
006600 !65.9 ± 7.5 | 00129000 !129,390 | 0001.4 !1.413479 | 004 !4.232° | 0.0013 | 1948 | Kuiper | |
| 15 | 01 !I | ‡Ariel | ˈɛəriəl | 1157 !1,157.8 ± 1.2 (1162 × 1156 × 1155) |
135000 !1,353 ± 120 | 00191000 !191,020 | 0002.5 !2.520379 | 000.260 !0.260° | 0.0012 | 1851 | Lassell | |
| 16 | 02 !II | ‡Umbriel | ˈʌmbriəl | 1169 !1,169.4 ± 5.6 | 117000 !1,172 ± 135 | 00266000 !266,300 | 0004.1 !4.144177 | 000.205 !0.205° | 0.0039 | 1851 | Lassell | |
| 17 | 03 !III | ‡Titania | tɨˈtɑːnjə | 1577 !1,576.8 ± 1.2 | 353000 !3,527 ± 90 | 00435000 !435,910 | 0008.7 !8.705872 | 000.340 !0.340° | 0.0011 | 1787 | Herschel | |
| 18 | 04 !IV | ‡Oberon | ˈoʊbərɒn | 1522 !1,522.8 ± 5.2 | 301000 !3,014 ± 75 | 00583000 !583,520 | 0013 !13.463239 | 000.058 !0.058° | 0.0014 | 1787 | Herschel | |
| 19 | 22 !XXII | ♠Francisco | frænˈsɪskoʊ | 0022 !~22 | 000000.72 !0.0072 | 04000000 !4,276,000 | 0266 !−266.56 | 147.459° | 0.1459 | 2003 | Holman et al. | |
| 20 | 16 !XVI | ♠Caliban | ˈkælɨbæn | 0072 !~72 | 000025 !0.25 | 07000000 !7,230,000 | 0579 !−579.50 | 139.885° | 0.1587 | 1997 | Gladman et al. | |
| 21 | 20 !XX | ♠Stephano | ˈstɛfənoʊ | 0032 !~32 | 000002.2 !0.022 | 08000000 !8,002,000 | 0677 !−676.50 | 141.873° | 0.2292 | 1999 | Gladman et al. | |
| 22 | 21 !XXI | ♠Trinculo | ˈtrɪŋkj |
0018 !~18 | 000000.39 !0.0039 | 08000000 !8,571,000 | 0749 !−758.10 | 166.252° | 0.2200 | 2001 | Holman et al. | |
| 23 | 17 !XVII | ♠Sycorax | ˈsɪkəræks | 0150 !~150 | 000230 !2.30 | 12,179,000 | 1283 !−1283.4 | 152.456° | 0.5224 | 1997 | Nicholson et al. | |
| 24 | 23 !XXIII | Margaret | ˈmɑrɡərɨt | 0020 !~20 | 000000.54 !0.0054 | 14,345,000 | 1694 !1694.8 | 051 !51.455° | 0.6608 | 2003 | Sheppard and Jewitt |
|
| 25 | 18 !XVIII | ♠Prospero | ˈprɒspəroʊ | 0050 !~50 | 000008.5 !0.085 | 16,418,000 | 1992 !−1992.8 | 146.017° | 0.4448 | 1999 | Holman et al. | |
| 26 | 19 !XIX | ♠Setebos | ˈsɛtɨbʌs | 0048 !~48 | 000007.5 !0.075 | 17,459,000 | 2202 !−2202.3 | 145.883° | 0.5914 | 1999 | Kavelaars et al. | |
| 27 | 24 !XXIV | ♠Ferdinand | ˈfɜrdɨnænd | 0020 !~20 | 000000.54 !0.0054 | 20,900,000 | 2823 !−2823.4 | 167.346° | 0.3682 | 2003 | Holman et al. |
Sources: NASA/NSSDC, Sheppard, et al. 2005. For the recently discovered outer irregular moons (Francisco through Ferdinand) the most accurate orbital data can be generated with the Natural Satellites Ephemeris Service. The irregulars are significantly perturbed by the Sun.
Read more about this topic: Moons Of Uranus
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