Pluto is the farthest 1 planet from the sun, and its average rotation distance around the sun is 5.9 billion kilometers. This distance is almost 38 times the distance between the sun and the earth, or 38 astronomical units. However, the eccentricity of Pluto's orbit is relatively large, reaching 0.25, and the included angle between its orbital plane and the ecliptic plane is also relatively large, reaching 17. Because of these two outstanding characteristics, Pluto's strange motion is caused.

Pluto's orbit is very flat, and its distance from the sun at perihelion is only 29.8 astronomical units, which is closer than Neptune. During this period, Pluto gave way to Neptune and became "the farthest 1 planet in the solar system". For example,1979 65438+1October 2 1 to1March 999 14, which is closer to the sun than Neptune.

Maybe someone will ask whether the orbits of Neptune and Pluto will intersect, that is, will the two planets collide? Originally, this is indeed a problem that should be considered, but considering that the intersection angle between Pluto's orbital plane and the ecliptic plane is as high as 17, we know that the two planets will not collide. Pluto has a chance to get very close to Pluto when it orbits the sun 159. Just like vehicles walking on a fork bridge, they will fly past each other and never collide.