Scattered disc objects are the most distant objects of our solar system till date, they are located as much as from 35AU to 1000AU from Sun. Due to their far distances from Sun they are also the coldest objects of our solar system with temperatures being only 35k to 55k. The other effect of distance on these objects is that they are really hard to be observed form earth. All the objects of scattered disc are relatively small and are hard to observe with normal earth based optical telescopes. They were first observed in 1980's using CCD(charged-coupled device in telescopes. This led to many more new discoveries of scattered disc objects(SDO) in very less time between 1992 to 2006.
Image here shows the largest known scattered disc object Eris and it's moon Dysnomia (the object on left)
The scattered disc lies immediately behind the kuiper belt, and the difference between kuiper belt and scattered disc is mainly the shape and the minor objects population. The shape of kuiper belt is a torus (or doughnut) whereas the scattered disc is in the shape of an irregular disc. And coming to the population, the kuiper belt is thickly populated and the scattered disc is sparsely populated with minor planets or asteroids. The outer part of kuiper belt known as the classical kuiper belt remains unaffected by the Neptune, in contrast to this the scattered disc population can be disturbed by the Neptune. Scattered disc objects come within the gravitational range of Neptune at their closest approaches(~30AU) but their farthest distances may reach many more times of this.
Image showing few large known SDO's
The trans-Neptunium objects are often divided into three sub-categories, they are: Kuiper belt, Scattered disc and the Oort cloud. Many of the oort cloud objects are believed to be oce the scattered disc objects. The scattered disc is spreadarther above and below the elliptic than the belt. As this disc is unstable in nature, now the SDO's are considered to be the place for the origin of comets.
An artistic image of comet
During the early ages of our solar system, when our sun entered its T-Tauri phase, that is, whenthe sun starts blowing out the solar winds for the first time with a very high speed in all the directions around sun. At this phase, most of the planetesimals where blown away far from the sun, this is though to be the origin for the kuiper belt, scattered disc and the hypothetical oort cloud. The reason for distorted orbit of these SDO's is still unknown but the orbital migration of Neptune and Uranus at the time of formation of solar system is thought to be the reason for throwing SDO's into elliptical orbit.
Do you know?
The comets have an elliptical orbit around sun (as shown in this image) with a revolution period being for few hundred years.
The scattered disc is very dynamic in nature, this is because they are still capable of being perturbed by Neptune, SDO's orbits are always are in danger of disruption, either of being sent outward to the oort cloud or inward into the centaur family and finally into the family of comets.
Do you know?
Image here shows the largest known scattered disc object Eris and it's moon Dysnomia (the object on left)
The scattered disc lies immediately behind the kuiper belt, and the difference between kuiper belt and scattered disc is mainly the shape and the minor objects population. The shape of kuiper belt is a torus (or doughnut) whereas the scattered disc is in the shape of an irregular disc. And coming to the population, the kuiper belt is thickly populated and the scattered disc is sparsely populated with minor planets or asteroids. The outer part of kuiper belt known as the classical kuiper belt remains unaffected by the Neptune, in contrast to this the scattered disc population can be disturbed by the Neptune. Scattered disc objects come within the gravitational range of Neptune at their closest approaches(~30AU) but their farthest distances may reach many more times of this.
Image showing few large known SDO's
The trans-Neptunium objects are often divided into three sub-categories, they are: Kuiper belt, Scattered disc and the Oort cloud. Many of the oort cloud objects are believed to be oce the scattered disc objects. The scattered disc is spreadarther above and below the elliptic than the belt. As this disc is unstable in nature, now the SDO's are considered to be the place for the origin of comets.
An artistic image of comet
During the early ages of our solar system, when our sun entered its T-Tauri phase, that is, whenthe sun starts blowing out the solar winds for the first time with a very high speed in all the directions around sun. At this phase, most of the planetesimals where blown away far from the sun, this is though to be the origin for the kuiper belt, scattered disc and the hypothetical oort cloud. The reason for distorted orbit of these SDO's is still unknown but the orbital migration of Neptune and Uranus at the time of formation of solar system is thought to be the reason for throwing SDO's into elliptical orbit.
Do you know?
The comets have an elliptical orbit around sun (as shown in this image) with a revolution period being for few hundred years.
The scattered disc is very dynamic in nature, this is because they are still capable of being perturbed by Neptune, SDO's orbits are always are in danger of disruption, either of being sent outward to the oort cloud or inward into the centaur family and finally into the family of comets.
Do you know? The white spot inside the Oort cloud is the kuiper belt, inside kuiper belt is outer solar system, inside outer solar system is asteroid belt, inside asteroid belt is inner solar system and inside inner solar system is Sun.
This whole together is known as the complete "SOLAR SYSTEM".
Do you know?
The sun's gravity holds all these objects which means it got a very massive gravitational field of 274m/s2
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