Britannia Object Catalogues: Satellites Of The Planets

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Satellites Of The Planets

PLANET SATELLITE DISCOVERED BY MEAN DISTANCE
FROM PLANET
(km) SIDEREAL
PERIOD
(days) ORBITAL
ECCENTRICITY DIAMETER OF
SATELLITE*
(km) MASS†
(Planet = 1) APPROXIMATE
MAGNITUDE
AT OPPOSITION SURFACE
GRAVITY
(Earth=1)

Earth Moon 384,404 27.322 0.055 3,476 0.0123 -12.5 0.16

Mars Phobos A. Hall (1877) 9,380 0.319 0.021 25 (2.7 × 10^-8) +12 0.0009

Diemos A. Hall (1877) 23,500 1.262 0.003 13 4.8 × 10^-9 +13 0.0004

Jupiter 1979 J3 Voyager II (1980) 126,000 0.297 0 <40 (10^-14) +18-19 0.002

1979 J1 Voyager II (1979) 129,000 0.297 0 <35 +19-21 0.001

Almalthea Barnard (1892) 181,300 0.498 0.003 240 (2 × 10^-9) +13 0.009

1979 J2 Voyager II (1980) 223,000 0.790 0 75 +14-16 0.003

Io Galileo (1610) 421,600 1.769 0.000 3640 4.7 × 10^-5 +5 0.18

Europa Galileo (1610) 670,900 3.551 0.000 3130 2.5 × 10^-5 +6 0.14

Ganymede Galileo (1610) 1,071,000 7.155 0.002 5270 7.8 × 10^-5 +5 0.15

Callisto Galileo (1610) 1,884,000 16.689 0.008 4840 5.6 × 10^-5 +6 0.12

Leda Kowal (1974) 11,094,000 239.2 0.147 10 (5 × 10^-13) +20 0.0003

Himalia Perrine (1904) 11,487,000 250.57 0.158 170 (8 × 10^-10) +14 0.004

Elara Perrine (1904) 11,747,000 259.65 0.207 80 (4 × 10^-11) +18 0.002

Lysithea Nicholson (1938) 11,861,000 263.55 0.130 25 (1 × 10^-12) +19 0.006

Ananke Nicholson (1951) 21,250,000 631.1r 0.169 20 (7 × 10^-13) +18 0.0005

Carme Nicholson (1938) 22,540,000 692.5r 0.207 30 (2 × 10^-12) +19 0.0008

Pasiphae Melotte (1908) 23,510,000 738.9r 0.378 35 (8 × 10^-12) +17 0.0009

Sinope Nicholson (1914) 23,670,000 758r 0.275 30 (2 × 10^-12) +18 0.0008

Saturn S 15 Voyager II (1980) 136,000 0.596 ? 40x20x20 ? ? 0.0008

S 14 Voyager II (1980) 138,000 0.608 ? 220 ? ? 0.006

S 13 Voyager II (1980) 141,000 0.625 ? 200 ? ? 0.005

S 11 Voyager II (1980) 151,000 0.696 ? 180x80 ? ? 0.004

S 10 Voyager II (1980) 151,000 0.696 ? 200x180x150 ? ? 0.005

Mimas W. Herschel (1789) 185,500 0.942 0.020 390 6.6 × 10^-8 +13 0.007

Enceladus W. Herschel (1789) 237,900 1.370 0.004 500 1.3 × 10^-7 +12 0.008

Tethys‡ Cassini (1684) 294,700 1.888 0.000 1,050 1.1 × 10^-6 +10 0.015

S 16‡ Voyager II (1981) 294,700 1.888 ? 20 ? ? 0.0003

S 17‡ Voyager II (1981) 294,700 1.888 ? 30 ? ? 0.0004

Dione§ Cassini (1684) 377,400 2.737 0.002 1,120 1.8 × 10^-6 +10 0.022

Dione B§ Voyager II (1980) 377,400 2.737 ? 160 ? ? 0.004

Rhea Cassini (1672) 526,700 4.518 0.001 1,530 4 × 10^-6 +10 0.028

Titan Huygens (1655) 1,222,000 15.945 0.029 5,140 2.3 × 10^-4 +8 0.14

Hyperion Bond (1848) 1,481,000 21.277 0.104 290 (2 × 10^-7) +14 0.006

Iapetus Cassini (1671) 3,562,000 79.331 0.028 1,440 3.3 × 10^-6 +11 0.02

Phoebe W. Pickering (1898) 12,960,000 550.45r 0.163 240 (7 × 10^-10) +16 0.005

Uranus Miranda Kuiper (1948) 130,000 1.414 0 300 1 × 10^-6 +17 0.004

Ariel Lassell (1851) 191,700 2.520 0.003 800 1.5 × 10^-5 +14 0.01

Umbriel Lassell (1851) 266,000 4.144 0.004 550 6 × 10^-6 +15 0.008

Titania W. Herschel (1787) 436,000 8.706 0.002 1,000 5 × 10^-5 +14 0.02

Oberon W. Herschel (1787) 582,960 13.463 0.001 900 3 × 10^-5 +14 0.01

Neptune Triton Lassell (1846) 356,400 5.877r 0.000 4,000 3 × 10^-3 +13 0.06

Nereid Kuiper (1949) 5,567,000 359.881 0.749 300 (10^-6) +19 0.004

Pluto Charon Christy (1978) 19,000 6.387 0 1,300 (0.1) +17 0.02

*A diameter of a satellite given in parentheses is estimated from the amount of sunlight it reflects.
†A mass of a satellite given in parentheses is estimated from its size and an assumed density.
‡ S 16 and S 17 are both in the same orbit as Tethys; S 16 is about 60° ahead of Tethys and S 17 about 60° behind.
§ Dione B is about 60° ahead of Dione and in the same orbit.
r indicates that the orbit is in retrograde.
Orbital data from The Astronomical Almanac (U.S. Naval Observatory), 1981.
Other data compiled from various sources.

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Database Last Updated: September 02 2017 21:54:12.
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PLANET	SATELLITE	DISCOVERED BY	MEAN DISTANCE FROM PLANET (km)	SIDEREAL PERIOD (days)	ORBITAL ECCENTRICITY	DIAMETER OF SATELLITE* (km)	MASS† (Planet = 1)	APPROXIMATE MAGNITUDE AT OPPOSITION	SURFACE GRAVITY (Earth=1)

Earth	Moon		384,404	27.322	0.055	3,476	0.0123	-12.5	0.16

Mars	Phobos	A. Hall (1877)	9,380	0.319	0.021	25	(2.7 × 10^-8)	+12	0.0009
	Diemos	A. Hall (1877)	23,500	1.262	0.003	13	4.8 × 10^-9	+13	0.0004

Jupiter	1979 J3	Voyager II (1980)	126,000	0.297	0	<40	(10^-14)	+18-19	0.002
	1979 J1	Voyager II (1979)	129,000	0.297	0	<35		+19-21	0.001
	Almalthea	Barnard (1892)	181,300	0.498	0.003	240	(2 × 10^-9)	+13	0.009
	1979 J2	Voyager II (1980)	223,000	0.790	0	75		+14-16	0.003
	Io	Galileo (1610)	421,600	1.769	0.000	3640	4.7 × 10^-5	+5	0.18
	Europa	Galileo (1610)	670,900	3.551	0.000	3130	2.5 × 10^-5	+6	0.14
	Ganymede	Galileo (1610)	1,071,000	7.155	0.002	5270	7.8 × 10^-5	+5	0.15
	Callisto	Galileo (1610)	1,884,000	16.689	0.008	4840	5.6 × 10^-5	+6	0.12
	Leda	Kowal (1974)	11,094,000	239.2	0.147	10	(5 × 10^-13)	+20	0.0003
	Himalia	Perrine (1904)	11,487,000	250.57	0.158	170	(8 × 10^-10)	+14	0.004
	Elara	Perrine (1904)	11,747,000	259.65	0.207	80	(4 × 10^-11)	+18	0.002
	Lysithea	Nicholson (1938)	11,861,000	263.55	0.130	25	(1 × 10^-12)	+19	0.006
	Ananke	Nicholson (1951)	21,250,000	631.1r	0.169	20	(7 × 10^-13)	+18	0.0005
	Carme	Nicholson (1938)	22,540,000	692.5r	0.207	30	(2 × 10^-12)	+19	0.0008
	Pasiphae	Melotte (1908)	23,510,000	738.9r	0.378	35	(8 × 10^-12)	+17	0.0009
	Sinope	Nicholson (1914)	23,670,000	758r	0.275	30	(2 × 10^-12)	+18	0.0008

Saturn	S 15	Voyager II (1980)	136,000	0.596	?	40x20x20	?	?	0.0008
	S 14	Voyager II (1980)	138,000	0.608	?	220	?	?	0.006
	S 13	Voyager II (1980)	141,000	0.625	?	200	?	?	0.005
	S 11	Voyager II (1980)	151,000	0.696	?	180x80	?	?	0.004
	S 10	Voyager II (1980)	151,000	0.696	?	200x180x150	?	?	0.005
	Mimas	W. Herschel (1789)	185,500	0.942	0.020	390	6.6 × 10^-8	+13	0.007
	Enceladus	W. Herschel (1789)	237,900	1.370	0.004	500	1.3 × 10^-7	+12	0.008
	Tethys‡	Cassini (1684)	294,700	1.888	0.000	1,050	1.1 × 10^-6	+10	0.015
	S 16‡	Voyager II (1981)	294,700	1.888	?	20	?	?	0.0003
	S 17‡	Voyager II (1981)	294,700	1.888	?	30	?	?	0.0004
	Dione§	Cassini (1684)	377,400	2.737	0.002	1,120	1.8 × 10^-6	+10	0.022
	Dione B§	Voyager II (1980)	377,400	2.737	?	160	?	?	0.004
	Rhea	Cassini (1672)	526,700	4.518	0.001	1,530	4 × 10^-6	+10	0.028
	Titan	Huygens (1655)	1,222,000	15.945	0.029	5,140	2.3 × 10^-4	+8	0.14
	Hyperion	Bond (1848)	1,481,000	21.277	0.104	290	(2 × 10^-7)	+14	0.006
	Iapetus	Cassini (1671)	3,562,000	79.331	0.028	1,440	3.3 × 10^-6	+11	0.02
	Phoebe	W. Pickering (1898)	12,960,000	550.45r	0.163	240	(7 × 10^-10)	+16	0.005

Uranus	Miranda	Kuiper (1948)	130,000	1.414	0	300	1 × 10^-6	+17	0.004
	Ariel	Lassell (1851)	191,700	2.520	0.003	800	1.5 × 10^-5	+14	0.01
	Umbriel	Lassell (1851)	266,000	4.144	0.004	550	6 × 10^-6	+15	0.008
	Titania	W. Herschel (1787)	436,000	8.706	0.002	1,000	5 × 10^-5	+14	0.02
	Oberon	W. Herschel (1787)	582,960	13.463	0.001	900	3 × 10^-5	+14	0.01

Neptune	Triton	Lassell (1846)	356,400	5.877r	0.000	4,000	3 × 10^-3	+13	0.06
	Nereid	Kuiper (1949)	5,567,000	359.881	0.749	300	(10^-6)	+19	0.004

Pluto	Charon	Christy (1978)	19,000	6.387	0	1,300	(0.1)	+17	0.02

A diameter of a satellite given in parentheses is estimated from the amount of sunlight it reflects. †A mass of a satellite given in parentheses is estimated from its size and an assumed density. ‡ S 16 and S 17 are both in the same orbit as Tethys; S 16 is about 60° ahead of Tethys and S 17 about 60° behind. § Dione B is about 60° ahead of Dione and in the same orbit. r indicates that the orbit is in retrograde. Orbital data from The Astronomical Almanac* (U.S. Naval Observatory), 1981. Other data compiled from various sources.