Main satellites of the planets

A Dictionary of Astronomy | 1997 | 700+ words | Copyright

Main satellites of the planets

Planet and satellite	Diameter (km)	Mean distance from centre of planet (10³km)	Orbital period (days)^a	Orbital inclination (degrees)^b	Orbital eccentricity	Year discovered
^a(R) = retrograde orbit
^bOrbital inclinations are relative to the planet's equator, except where noted.
^cRelative to the ecliptic plane.
^dConfirmed 2000. ^eConfirmed 1980.
^fDiameter of solid body; diameter at cloud top is 5550 km.
Orbital data from The Astronomical Almanac. Diameters from the IAU/IAG Working Group on Cartographic Coordinates and Rotational Elements (2003) and The Astronomical Almanac. http://asa.nao.rl.ac.uk/SecF/2007/Satellite_orbital_data.txt http://astrogeology.usgs.gov/Projects/WGCCRE/constants/iau2000_table5.html http://asa.nao.rl.ac.uk/SecF/2007/Satellite_photo_data.txt
In addition, many smaller moons of the outer planets are known. For up‐to‐date listings see http://www.ifa.hawaii.edu/∼sheppard/satellites/
Earth
	Moon	3475	384.4	27.322	18.28–28.58^c	0.055
Mars
I	Phobos	27 × 22 × 18	9.38	0.319	1.08	0.015	1877
II	Deimos	15 × 12 × 10	23.46	1.262	1.79	0.000	1877
Jupiter
XVI	Metis	60 × 40	128.0	0.295	0.02	0.001	1979
XV	Adrastea	20 × 16 × 14	128.9	0.298	0.05	0.002	1979
V	Amalthea	250 × 146 × 128	181.4	0.498	0.39	0.003	1892
XIV	Thebe	116 × 98 × 84	221.9	0.675	1.07	0.018	1979
I	Io	3643	421.8	1.769	0.04	0.004	1610
II	Europa	3124	671.1	3.551	0.47	0.009	1610
III	Ganymede	5265	1070.4	7.155	0.17	0.001	1610
IV	Callisto	4819	1882.7	16.689	0.19	0.007	1610
XVIII	Themisto	4	7284	130.02	43.26	0.243	1975^d
XIII	Leda	10	11 165	240.92	27.46	0.164	1974
VI	Himalia	170	11 461	250.56	27.50	0.162	1904
X	Lysithea	24	11 717	259.20	28.30	0.112	1938
VII	Elara	80	11 741	259.64	26.63	0.217	1905
XXII	Harpalyke	3	20 858	623.31(R)	148.64	0.227	2000
XXVII	Praxidike	5	20 907	625.38(R)	148.97	0.231	2000
XXIV	Iocaste	4	21 061	631.60(R)	149.43	0.216	2000
XII	Ananke	20	21 276	629.77(R)	148.89	0.244	1951
XXI	Chaldene	3	23 100	723.70(R)	165.19	0.252	2000
XXVI	Isonoe	3	23 155	726.25(R)	165.27	0.247	2000
XXV	Erinome	3	23 196	728.51(R)	164.93	0.267	2000
XX	Taygete	4	23 280	732.41(R)	165.27	0.253	2000
XI	Carme	30	23 404	734.17(R)	164.91	0.253	1938
XXIII	Kalyke	4	23 566	742.03(R)	165.16	0.247	2000
VIII	Pasiphae	36	23 624	743.63(R)	151.43	0.409	1908
XIX	Megaclite	4	23 493	752.88(R)	152.77	0.420	2000
IX	Sinope	28	23 939	758.90(R)	158.11	0.250	1914
XVII	Callirrhoe	8	24 103	758.77(R)	147.16	0.283	1999
Saturn
XVIII	Pan	20	133.6	0.575	0.00	0.000	1990
XV	Atlas	37 × 34 × 27	137.7	0.602	0.00	0.000	1980
XVI	Prometheus	148 × 100 × 68	139.4	0.613	0.00	0.002	1980
XVII	Pandora	110 × 88 × 62	141.7	0.629	0.00	0.004	1980
XI	Epimetheus	138 × 110 × 110	151.4	0.694	0.34	0.021	1980
X	Janus	194 × 190 × 154	151.5	0.695	0.17	0.007	1966^e
I	Mimas	418 × 392 × 383	185.6	0.942	1.57	0.021	1789
II	Enceladus	513 × 495 × 489	238.1	1.370	0.01	0.000	1789
III	Tethys	1071 × 1056 × 1052	294.7	1.888	1.68	0.000	1684
XIII	Telesto	30 × 25 × 15	294.7	1.888	1.16	0.001	1980
XIV	Calypso	30 × 16 × 16	294.7	1.888	1.47	0.001	1980
IV	Dione	1120	377.4	2.737	0.00	0.002	1684
XII	Helene	36 × 32 × 30	377.4	2.737	0.21	0.000	1980
V	Rhea	1528	527.1	4.518	0.33	0.001	1672
VI	Titan	5150^f	1221.9	15.945	1.63	0.029	1655
VII	Hyperion	328 × 260 × 214	1464.1	21.277	0.57	0.018	1848
VIII	Iapetus	1436	3560.8	79.330	7.57	0.028	1671
XXIV	Kiviuq	14	11 110	449.22	46.15	0.329	2000
XXII	Ijiraq	10	11 125	451.47	46.73	0.316	2000
IX	Phoebe	230 × 220 × 210	12 944	548.21(R)	174.75^c	0.164	1898
XX	Paaliaq	10	15 200	686.94	45.08	0.363	2000
XXVII	Skathi	6	15 539	728.18(R)	152.62	0.270	2000
XXVI	Albiorix	16	16 182	783.45	34.21	0.479	2000
XXVIII	Erriapo	8	17 342	871.16	34.47	0.472	2000
XXIX	Siarnaq	32	17 531	895.55	45.54	0.296	2000
XXI	Tarvos	13	17 982	926.11	33.50	0.537	2000
XXV	Mundilfari	6	18 418	951.56(R)	167.48	0.209	2000
XXIII	Suttungr	6	19 459	1016.51(R)	175.81	0.114	2000
XXX	Thrymr	6	19 941	1091.76(R)	175.82	0.471	2000
XIX	Ymir	16	23 041	1315.35(R)	173.10	0.335	2000
Uranus
VI	Cordelia	26	49.77	0.335	0.09	0.000	1986
VII	Ophelia	30	53.79	0.376	0.10	0.010	1986
VIII	Bianca	42	59.17	0.435	0.19	0.001	1986
IX	Cressida	62	61.80	0.464	0.01	0.000	1986
X	Desdemona	54	62.70	0.474	0.11	0.000	1986
XI	Juliet	84	64.40	0.493	0.07	0.001	1986
XII	Portia	108	66.10	0.513	0.06	0.000	1986
XIII	Rosalind	54	69.90	0.558	0.28	0.000	1986
XIV	Belinda	66	75.30	0.624	0.03	0.000	1986
XV	Puck	154	86.00	0.762	0.32	0.000	1985
V	Miranda	481 × 468 × 466	129.9	1.413	4.34	0.001	1948
I	Ariel	1162 × 1156 × 1155	190.9	2.520	0.04	0.001	1851
II	Umbriel	1169	266.0	4.144	0.13	0.004	1851
III	Titania	1578	436.3	8.706	0.08	0.001	1787
IV	Oberon	1523	583.5	13.463	0.07	0.001	1787
XVI	Caliban	60	7231.0	579.73(R)	140.88^c	0.159	1997
XX	Stephano	20	8004.0	677.36(R)	144.11	0.229	1999
XVII	Sycorax	120	12 179	1288.3(R)	159.40^c	0.522	1997
XVIII	Prospero	30	16 256	1978.3(R)	152.00	0.445	1999
XIX	Setebos	36	17 418	2225.2(R)	158.20	0.591	1999
Neptune
III	Naiad	58	48.23	0.294	4.75	0.000	1989
IV	Thalassa	80	50.08	0.311	0.21	0.000	1989
V	Despina	148	52.53	0.335	0.06	0.000	1989
VI	Galatea	158	61.95	0.429	0.06	0.000	1989
VII	Larissa	208 × 178	73.55	0.555	0.21	0.001	1989
VIII	Proteus	436 × 416 × 402	117.65	1.122	0.03	0.001	1989
I	Triton	2705	354.80	5.877(R)	156.83	0.000	1846
II	Nereid	340	5513.4	360.14	7.23	0.751	1949
Pluto
I	Charon	1186	19.60	6.387	96.15	0.002	1978

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