Which of Jupiter’s four largest moons has the longest orbital period?
Which of Jupiter’s four largest moons has the longest orbital period?
| Name | Callisto |
|---|---|
| Discoverer | Galileo, 1610 |
| Diameter | 4,800 km/2,983 mi |
| Distance from Jupiter | 1,883,000 km/1,170,000 mi |
| Orbital Period (days) | 16.69 |
| Name | Callisto |
|---|---|
| Discoverer | Galileo, 1610 |
| Diameter | 4,800 km/2,983 mi |
| Distance from Jupiter | 1,883,000 km/1,170,000 mi |
| Orbital Period (days) | 16.69 |
What are the 4 Galilean moons?
The Galilean Moons The German astronomer Simon Marius claimed to have seen the moons around the same time, but he did not publish his observations and so Galileo is given the credit for their discovery. These large moons, named Io, Europa, Ganymede, and Callisto, are each distinctive worlds.
Why do Galilean moons have circular orbits?
The Galilean satellites are nearly spherical in shape due to their planetary mass, and so would be considered at least dwarf planets if they were in direct orbit around the Sun.
What is the correct order of the Galilean moon sizes?
ən/), or Galilean satellites, are the four largest moons of Jupiter: Io, Europa, Ganymede, and Callisto.
Which of the Galilean moons has the shortest period?
- Io: 1.8 days.
- Europa: 3.6 days (exactly 2 times Io’s period!)
- Ganymede: 7.2 days (exactly 4 times Io’s period!)
- Callisto: 16.7 days.
- Io: 1.8 days.
- Europa: 3.6 days (exactly 2 times Io’s period!)
- Ganymede: 7.2 days (exactly 4 times Io’s period!)
- Callisto: 16.7 days.
Which Galilean moon orbits Jupiter the fastest?
Io completes exactly four orbits and Europa completes exactly two orbits in the same time it takes Ganymede to complete one orbit around Jupiter.
Why are the Galilean moons so special?
Four of Jupiter’s moons: Io, Europa, Ganymede and Callisto — known as the Galilean moons — were the first celestial objects to be discovered orbiting an object other than the sun or Earth when Galileo Galilei first observed them in 1610.
What are the 4 main moons that orbit Jupiter called and why?
67 moons orbit the great gas giant Jupiter; of these, the four largest are known as the Galilean moons, having been discovered by Galileo Galilei using his telescope in 1610. The four moons are Io, Europa, Ganymede, and Callisto, in order of distance from Jupiter. (Their names derive from lovers of Zeus.)
Which Galilean moon most active?
With over 400 active volcanoes, Io is the most geologically active object in the Solar System. This extreme geologic activity is the result of tidal heating from friction generated within Io’s interior as it is pulled between Jupiter and the other Galilean moons—Europa, Ganymede and Callisto.
Did Galileo believe in circular orbits?
He also discovered the phases of Venus and sunspots, thereby confirming that the Sun rotates, and that the planets orbit around the Sun, not around the Earth. But Galileo thought that most planetary orbits are circular in shape, when in fact they are elliptical, as shown by Johannes Kepler.
Are all the Galilean moons tidally locked?
Jupiter’s major moons, the Galilean moons, are the largest Jovian moons. The Galilean moons are Europa, Io, Callisto, and Ganymede. All four moons are significant solar bodies with unique features, and they are all tidally locked to their parent planet, Jupiter.
Why does the Moon not orbit in a perfect circle?
Also while the Moon always keeps the same side aimed toward Earth—a common scenario among moons called tidal locking—it’s also not perfect because the Moon’s axis is tilted relative to its orbital plane.
What is the order of space from smallest to largest?
Complete answer: Universe, galaxies, solar system, star, earth, moon, and asteroid are listed in order of size from largest to smallest.
Is Europe the smallest Galilean moon?
Size: Europa is 1,900 miles (3,100 km) in diameter, making it smaller than Earth’s moon, but larger than Pluto. It is the smallest of the Galilean moons.
What is the correct order of the Moon phases in sequence?
These eight phases are, in order, new Moon, waxing crescent, first quarter, waxing gibbous, full Moon, waning gibbous, third quarter and waning crescent.
What is the second largest Galilean moon?
Callisto. Callisto is Jupiter’s second largest moon and perhaps the dark horse of the Galilean satellites. It seems to be a geologically inactive, dark, cratered world, but planetary scientists believe it could host a liquid ocean beneath its surface.
Which moon takes the longest to orbit once?
Neso is also the moon with the longest orbital period, 26.67 years. It follows a retrograde, highly inclined, and highly eccentric orbit illustrated on the diagram in relation to other irregular satellites of Neptune.
Which Galilean moon is tidally locked?
Callisto is tidally locked with Jupiter, which means that the same side of Callisto is always facing Jupiter. Callisto is about 1.8 times farther from Jupiter than Ganymede, 2.8 times farther than Europa and 4.5 times farther than Io, Jupiter’s closest large moon.
Which moon has the longest orbital period?
Neso is also the moon with the longest orbital period, 26.67 years. It follows a retrograde, highly inclined, and highly eccentric orbit illustrated on the diagram in relation to other irregular satellites of Neptune.
Who has the longest orbital period?
Given its distance from the Sun, Neptune has the longest orbital period of any planet in the Solar System.
What are the 4 largest moons of Jupiter in order from inner to outer orbit around the planet?
This ‘family portrait’ shows a composite of images of Jupiter, including it’s Great Red Spot, and its four largest moons. From top to bottom, the moons are Io, Europa, Ganymede and Callisto.
Which of Jupiter’s moons is the largest?
- Ganymede. Diameter: 3,270 miles (5,260 kilometers) Jupiter’s moon Ganymede is the biggest moon in the solar system, it is even larger than the planet Mercury. …
- Europa. Diameter: 1,940 miles (3,100 km) …
- Io. Diameter: 2,260 miles (3,640 km) …
- Callisto. Diameter: 2,995 miles (4,820 km)
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