Amalthea
Amalthea imaged by Voyager 1. Credit: NASA
An inner moon of Jupiter. Amalthea is the largest of Jupiter's non-Galilean satellites and one of four moons that circle around Jupiter inside the orbit of Io.
Amalthea (moon)
Amalthea
Galileo image of Amalthea Discovery Discovered by
E. Barnard Discovered on
September 9, 1892 Orbital characteristics Mean radius
181,995 km (0.001217 AU) Eccentricity
0.0046637841 Periapsis ...
Amalthea
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Amalthea
Related Category: Astronomy: General
(m´´lth´), in astronomy, one of the 39 known moons, or natural satellites, of Jupiter.
Amalthea is extremely irregular, having dimensions of about 270x165x150 kilometers in diameter. It is heavily scarred by craters, some of which are extremely large relative to the size of the moon.
Comparison of Amalthea and Io
This comparison of Amalthea and Io, using images obtained by the Galileo spacecraft, demonstrate the different processes involved in shaping planetary satellites.
Amalthea was discovered by Barnard 1892. Amalthea nursed the Jupiter as a young baby, using goats milk. Amalthea is the third closest moon to the surface of Jupiter.
Amalthea
Jupiter V
Amalthea ("am al THEE uh") is the third of Jupiter's known satellites: orbit: 181,300 km from Jupiter diameter: 189 km (270 x 166 x 150) mass: 3.5e18 kg ?
Amalthea
Jupiter V, the innermost satellite of Jupiter. Diameter about 140 km; i = 0°.4, e = 0.0028, period 0.498 days. Discovered by Barnard in 1892. (also called Barnard's satellite)
Americium ...
AMALTHEA
Amalthea is the third-closest moon to Jupiter and the reddest object in our solar system . Amalthea is 145 x 91 x 83 miles (232 x146 x134 km) in diameter and orbits 112,700 miles (181,300 km) from Jupiter, within the faint Gossamer ring.
AMALTHEA
Amalthea (J-V) is the third-closest moon of Jupiter and the largest of smaller moons. It is a small, red, elongated, cratered moon (with two very large craters); it has the fastest speed of any known moon.
Amalthea was the last moon to be discovered by direct visual observation — as opposed to photography — when it was spotted in 1892 by Edward Emerson Barnard using the 36 inch telescope at Lick Observatory on Mount Hamilton in California.
also known as Amalthea.
Barnard's Star
(a) Star that had - until 1968 - the greatest known proper motion of any.
Amalthea (NASA Thesaurus) Innermost satellite of Jupiter. AMBAL (Plasma Physics and Fusion Energy Glossary) An ambipolar trap (tandem mirror) located at Novosibirsk in Russia. ambient (NASA SP-7, 1965) (symbol , used as a subscript) ...
JUPITER J_RINGS AMALTHEA IO EUROPA CALLISTO GANYMEDE ADRASTEA METIS THEBE or JUPITER J_RINGS AMALTHEA IO EUROPA CALLISTO GANYMEDE ADRASTEA METIS THEBE or JUPITER J_RINGS AMALTHEA IO EUROPA CALLISTO GANYMEDE ADRASTEA METIS THEBE
Saturn targets: ...
Metis, Adrastea, Amalthea and Thebe
Io
Europa
Ganymede
Callisto
Leda, Himalia, Lysithea, Elara, Ananke, Carme, Pasiphae and Sinope
Recently discovered moons ...
Inner satellites or Amalthea group-they orbit very close to Jupiter: Metis, Adrastea, Amalthea, and Thebe.
The four rings - Metis, Adrastea, Thebe, and Amalthea - are constantly struck by meteoroids collisions that shower Jupiter's rings with more debris and dusts.
Amalthea (satellite of Jupiter)
Astraea (asteroid)
Charon (astronomy)
Eris (astronomy)
Europa (satellite of Jupiter)
Ganymede (satellite of Jupiter)
Ida (asteroid)
Io (satellite of Jupiter)
Jupiter (planet)
Makemake (dwarf planet) ...
The largest of the four, Amalthea, is less than 300 km across and is irregularly shaped. E. E. Barnard discovered it in 1892. It orbits at a distance of 181,000 km from Jupiter's center"only 110,000 km above the cloud tops.
In a similar way, the moons Thebe and Amalthea probably produce the two distinct components of the gossamer ring.
Magnetosphere
Jupiter's broad magnetic field is 14 times as strong as the Earth's, ranging from 4.
Their names, in order from Jupiter are Metis, Adrastea, Amalthea, and Thebe. Still in order after the Galilean Satellites are recently discovered Themisto, Leda, Himalia, Lysithea, and Elara.
Amalthea and Thebe likely provide the dust for the Gossamer ring. Thebe has a mass of 8 x 1017kg. It orbits Jupiter in 0.6745 day (Earth) days and is in synchronous rotation (always keeping the same side facing Jupiter).
The only other Jovian satellite that was close enough to the trajectories of the Voyager spacecraft in 1979 to allow surface features to be seen was Amalthea.
It orbited the planet for over seven years and conducted multiple flybys of all of the Galilean moons and Amalthea.
Greeks considered its brightest star, Cappella, to represent Amalthea - the goat which suckled infant Zeus. The triangle of tree stars to its SW, e Aurigae, h Aurigae and z Aurigae, are called the Kids.
These are much smaller than the Galilean moons. An example is Amalthea, shown in the image to the right (Ref), which orbits inside the orbit of Io (its color may be due to particles from the volcanoes on Io).
The names of all of Jupiter's satellites come from mythological lovers of Jupiter, except Amalthea who was his nurse.
However, they are probably also being continuously resupplied by dust driven into space from energic, interplanetary micrometeors that smash into Jupiter's four small, innermost moons: Metis, Adrastea, Thebe, and Amalthea -- more.
Amalthea
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Distance from the Sun to Jupiter
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