to Masters, questions about Pluto s orbit

Now it seems that Pluto's orbit is not on the ecliptic plane, mainly because it forms differently than the other 8 planets. The other eight planets were formed from dust that rotated close to the Sun. Although there are many hypotheses about the formation of Pluto, each of them can indicate that it does not operate on the ecliptic plane.

These hypotheses are:

1 Kuiper Belt Objects: Pluto is a Kuiper Belt object, a region on the outer part of the solar system that is dominated by asteroids, ice, and comets. Unlike large planets, these small bodies have a wide range of orbits, and many of them have a large angle to the ecliptic plane.

If Pluto forms in this region, it is not surprising that his orbit is at a large angle to the ecliptic plane.

2 Neptune Moon: Many people think that Pluto was a large moon of Neptune in the past, but because of its long orbit, it was gradually thrown out of Neptune's range and became an independent planet. Some of the orbits of planetary moons are at angles to the ecliptic plane, and if Pluto were thrown out of such an orbit, it would also form its current orbit.

3 Planetary Debris: There is also a theory that Pluto is a fragment of a large stony planet that was pushed into its current orbit due to some celestial perturbation or the influence of ** on this planet. Of course, it is easy to explain why Pluto's orbit is so strange.

There is a theory, (or a prophecy), that there is a planet beyond Pluto that is curious, (some call it an extraplanet), and it is its effect that causes such an abnormal situation in Pluto's orbit. Quantitatively, ha, I can't do it.

Gravitational disturbances are more pronounced on smaller planets.

In the long run, Pluto's orbit is actually chaotic. Although computer simulations can be millions of years of positions (forward and backward in time), calculations of 10 million to 20 million years beyond Lyapunov time are impractical: Pluto has an extremely difficult factor, and the immeasurability of the solar system, which is also sensitive to minute details, will gradually destroy its orbit.

For millions of years now, Pluto may be at aphelion, perihelion, or anywhere else that we can't get to do. However, this does not mean that Pluto's orbit itself is unstable, but that its current position in orbit makes it impossible to predict and determine its future position in advance. Some resonances and other dynamic effects keep Pluto's orbit stable and safe from planetary collisions or scattering.

Pluto's orbital period is 248 Earth years. Its orbital characteristics are distinctly different from those of other planets, following a nearly circular orbit, with only a narrow part close to the orbital planes of other planets called the ecliptic. In contrast, Pluto's orbit is highly inclined (over 17°) and has a high eccentricity (oval).

Such a high eccentricity means that in some regions, Pluto will be closer to the Sun than Neptune. On September 5, 1989, the center of mass of Pluto-Charon reached perihelion, and between February 7, 1979 and February 11, 1999, it was closer to the Sun than Neptune. During this time, the closest distance between Pluto and Neptune is the astronomical unit.

Hello landlord!

Pluto is not a planet, but a dwarf planet. A dwarf planet is defined as a celestial body that orbits the Sun and has a gravitational force sufficient to overcome its rigid physical strength to make a celestial body spherical, but cannot clear other objects in its orbit.

While the other planets rotate in the same plane, Pluto's orbit (seems) is tilted, forming a 17-degree angle. Although Pluto is the farthest from the Sun, each lap of Pluto is closer to us than Neptune for some time. For most of the '80s and '90s, Neptune was the farthest away from us, and it wasn't until February 11, 1999, that Pluto returned to its outer orbit, where it would stay for 228 years.

As for the question raised by the landlord, it seems that it is still an unsolved mystery. Sorry nothing can be done, but in this can provide a personal conjecture: Pluto is very small, not half the size of the 48 states of the United States.

Pluto, on the other hand, is very close to the Kuiper Belt (the Belt of Cosmic Ruins), and Pluto's gravitational pull is not strong enough to clear the debris, perhaps when it collides with a comet or something else, causing it to take a heavy hit, and deviate from its orbit when it regroups. It is also possible that the strong gravitational pull at the time of Neptune's formation (or other celestial bodies) affected Pluto, causing its orbit to deviate.

Because beyond the orbits of Neptune and Pluto, there is an undiscovered x planet in the Kuiper Belt, and it is precisely because of the gravitational pull generated by its existence that Pluto's huge ecliptic plane angle and ultra-high orbital eccentricity! This makes Pluto's perihelion and aphelion more than 20 AU apart! The orbit of perihelion has run into the orbit of Neptune, because the universe is very empty, and there is no need to worry about them colliding, and the probability is only one in a billion!

There is now a theory accepted by many scientists that Pluto is an alien star captured by the solar system. Because the gravitational pull of the proto-galaxies and the solar system is different, the orbit deviates after being captured by the solar system. The planets of the solar system are discovered sequentially by scientists by calculating distances.

But between Mars and Jupiter, an asteroid belt was discovered, some of which had the same orbit as the planets of the solar system, and some of which were the same as Pluto, but opposite to the solar system. This is evidence of the collision of two planets in different galaxies. The same is true of some of the moons of Jupiter and Saturn.

a.Flat and oblique (correct answer).

b.Fang and cover Changzheng.