The first, known as the "dynamically cold" population, has orbits much like the planets; nearly circular, with an orbital eccentricity of less than 0.1, and with relatively low inclinations up to about 10° (they lie close to the plane of the Solar System rather than at an angle).
Prva, poznata kao "dinamički hladna" populacija, ima orbite slične planetima; gotovo kružne, s orbitalnim ekscentricitetom manjim od 0,1 i s relativnom malenom inklinacijom od oko 10° (leže u ravnini s Sunčevim sustavom a ne pri određenom kutu).