solar system, other than 8 large celestial bodies, comets and asteroids, is still of minor planets that do not fit into any of these categories, and do not belong to a dwarf.They have their own orbit, which has not changed over millions of years.To date, scientists have found about 400 thousand of these celestial bodies.But it is assumed that their numbers may be billions.
celestial bodies of the Solar System that fall under this category have a size greater than 50 m and show no cometary activity.Depending on their location in relation to the sun, all the small planets classified.They were divided into separate groups.Many people wonder how called minor planets, and who gives them names.It is worth noting that the name of the celestial body comes up with the pioneer, but it has yet to approve the Commission scientists.Each of its members gives his opinion to the correct use of the name, and then takes a collective decision.
first minor planet discovered in 1801.Pathfinder became Giuseppe Piazzi, who named it Ceres.Opened in future such celestial body to be called the names of the ancient Greek or Roman gods and heroes.But it soon became clear that they are countless.So we had to rethink their classification in the future.So, on what basis and how are called minor planets?
closest to the Sun is a class vulcanoid.Among them we have not yet found any planet because of the proximity of the luminaries.Then there are the Aten, which are located slightly closer to the Sun than the Earth, and never cross our orbit.Mars is located near the Martian Trojans class having four planets.Also known group of Apollo and cupids.Near Jupiter Trojans grouped and located closer to Neptune belt centaurs.Near the orbit of the planet Neptune Trojans are located, followed by trans-Neptunian objects, and most distant celestial bodies form the Kuiper belt.
How are called planetoids, also depends on the group to which they belong.For example, if a class of Trojans, the celestial bodies are named heroes of the Trojan War, when the centaur - the mythological demi, Kuiper - ancestors of religions and god-builders.But there are also the names of the rulers, figures of culture and science, the names of the continents and countries.In Soviet times, the discovery of celestial objects involved in the Crimean Observatory.While many names have been immortalized by local writers, scientists and other personalities.Therefore, it is referred to as minor planets, it depends entirely on the discoverer.
Very often there is a perception that the concept of "small parade of planets" has something to do with these heavenly bodies.However, it is not.This phenomenon, when gathered together four major planets.It occurs once in 20 years.To make it happen, it is necessary to converge ecliptic longitude of objects from the terrestrial observer.Visually, it looks like the proximity to the sky.Also vary a great parade, visible or invisible.To get the great parade of planets, you need to connect as many as five or more celestial bodies.
