How many moons does Saturn and Jupiter really have?

According to Astronomy Enthusiast magazine, as of 2006, only 13 Jupiter and Saturn have been confirmed 18. Although the rest have been observed, some are too small to be identified as its satellites, so they have not been confirmed by the World Astronomical Organization.

It's hard to say.

Because a lot of satellites have been observed, but they haven't been identified, or they've only been observed once.

There's a statistic that can be referred to as the latest from Wikipedia.

Saturn's moons 200 observed (61 orbits confirmed) Jupiter's moons 63 are confirmed.

Jupiter has 63 trees.

There are 47 trees on Saturn.

The Minor Planet Center of the International Astronomical Union announced on October 7 that Qi and astronomers have discovered 20 new moons of Saturn, which increases the number of Enceladus to 82, surpassing Jupiter's 79 moons and becoming the planet with the most moons in the solar system. How many satellites are there?

What planets are there in the solar system?

On August 24, 2006, the 26th International Astronomical Union classified Pluto as a dwarf planet and named it asteroid 134340, which was removed from the nine planets in the solar system, so from August 24, 2006, there are only eight planets in the solar system, namely: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.

How many moons are there on the planets?

Mercury: is the closest planet to the Sun, the fastest moving planet in the solar system, and has no moons around it.

Venus: The closest planet to Earth, in all astronomy books, when talking about the moons of Venus, it is considered to have a natural satellite number of "0".

Earth: There is a natural satellite, the Moon, which orbits the Earth in a 30-day cycle.

Mars: Mars has two moons, one called Forbos (Phobos) and the other Demos (Phobos).

Jupiter: There are a total of 79 moons of Jupiter, including Ganymede.

1. Ganymede. 2. Ganymede.

3. Europa was discovered by the Italian astronomer Galileo Galilei in 1610 with a homemade telescope, and these four moons were later called Galileo moons.

Saturn: The 20 newly discovered moons bring the total number of high-lying moons of Saturn to 82, making it the planet with the most orbital holes in the solar system.

Uranus: Uranus has 27 natural moons, and the five main moons are named Miranda, Ariel, Umberriel, Titania, and Oberon.

Neptune: There are 14 moons with the names Triton 1 to Triton 14.

Jupiter has many moons. In 2018, astronomers discovered 12 new moons of Jupiter, bringing the number of known moons of the gas giant to 79. Scientists photographed more distant Kuiper Belt objects while observing them.

The two new moons, named "S 2016 J1" and "S 2017 J1", are 21 million and 24 million kilometers away from Jupiter, respectively.

A total of 62 moons of Saturn have been confirmed. Among them, Titan is the largest moon in the Saturn system and the second largest in the solar system (radius 2575km) (the largest moon in the solar system is Jupiter's Ganymede, with a radius of 2631km).

When I was in middle school, the textbook said, "Jupiter has 16 moons and Saturn has 23 moons." ”

However, it is now certain that Jupiter has at least 63 moons and Saturn has at least 62 moons. This number has increased by leaps and bounds compared to the 90s. Thanks to the close probes of the two planets by Galileo and Cassini, a large number of satellites with a diameter of several kilometers have been able to enter the human field of vision.

In contrast, the data for textbooks lags behind. I heard that in some places, these two figures have been corrected in the textbooks after the curriculum reform. If it is required for the exam, the textbook shall prevail.

If this definition is followed, the rock fragments in the rings of Jupiter and Saturn should all belong to the moons. That's right, there are at least a few million Encetes. Therefore, it is also necessary to give the satellite a lower limit of mass.

However, how to intercept this lower limit, why can it be counted as a satellite above this limit, and can only be counted as fragments of the halo below this limit, and is there a qualitative difference in physical properties? Obviously, this standard is difficult for the congregation to reconcile. Therefore, it is very difficult to give a data on how many Woodenos and Enceladus there are now.

Be sure to give an answer, which seems to be accurate, but it is not rigorous.

Moreover, for a small celestial body orbiting the earth, no matter how it is defined, its objective properties will not change. For astronomers, it is their physical and chemical properties that are more concerned than their identity. For the public, it's the opposite.

This contradiction is difficult to reconcile in the short term. The answer to this question will not be conclusive anytime soon.

Categories: Education, Science, >> Science & Technology.

Analysis: Moons of Jupiter.

There are currently 63 known moons of Jupiter, and together with Jupiter, they form a celestial system called the Jupiter System. Jupiter's moons are numbered in the order in which they were discovered.

Jupiter is the planet with the most natural satellites discovered by mankind so far, and 63 moons have been discovered so far, just like a small solar system: Jupiter. The first to discover that Jupiter had moons was Galileo, who discovered the four brightest moons of Jupiter in January 1610, and was named Galileo Moons by later generations.

They orbit around Jupiter at a distance of 401.9 million kilometres, from the inside to the outside.

1. Ganymede. 2. Ganymede.

3. Ganymede.

In the following centuries, 12 more larger moons were discovered, bringing the total number of Jupiter's moons to 16. It was not until the mid-1990s that the Galileo probe of the United States flew into the Jupiter system and discovered many natural satellites that had not been discovered before, bringing the total number of Jupiter satellites known to mankind to 63.

Moons of Saturn.

Saturn currently has a total of 47 known moons.

Saturn has many moons, 34 of which have names; among them"Most of the specifics are unknown, as there are many objects in orbit near Saturn" 。Nature, vol. 412, pp. 163-166).Of particular note is Titan:

The only moon in the solar system with a defeated or dense atmosphere.

As of 2019, the number of moons discovered is more than Saturn in the Jupiter belt, with 79 moons discovered and Saturn 62 moons.

Jupiter is the planet with the most natural satellites ever discovered, and Jupiter's orbit is gradually slowing down. Similarly, the same gravitational force also changes the orbits of the moons, causing them to slowly and gradually move away from Jupiter. Io, Europa, and Europa are affected by the gravitational force to fix the co-rotation relationship at 1:

2:4, and change together.

Saturn is the second largest planet in the solar system after Jupiter, and there are many large and small moons around it, like a small family. In recent years, with the continuous improvement of observation technology, the number of asteroid moons has risen sharply, and the number of Saturn moons has been discovered at 62.