We present a new analysis of the currently available orbital elements for the known Kuiper belt objects. In the nonresonant, main Kuiper belt, we find a statistically significant relationship between an object's absolute magnitude (H) and its inclination (i). Objects with H 6.5 (radii 170 km). We have shown that this relationship is not caused by any obvious observational bias. We argue that the main Kuiper belt consists of the superposition of two distinct distributions. One is dynamically hot, with inclinations as large as ~35° and absolute magnitudes as bright as 4.5; the other is dynamically cold, with i 5° and H > 6.5. The dynamically cold population is most likely dynamically primordial. We speculate on the potential causes of this relationship.
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机译：我们对已知的柯伊伯带天体的当前可用轨道要素进行了新的分析。在非共振主柯伊伯带中，我们发现了物体的绝对大小（H）和倾角（i）之间的统计上显着的关系。 H 6.5（半径170 km）的物体。我们已经表明，这种关系不是由任何明显的观察偏差引起的。我们认为主要的柯伊伯带由两个不同分布的叠加组成。一种是动态高温的，倾角最大为〜35°，绝对大小为4.5。另一个是动态冷的，i为5°，H> 6.5。动态的冷种群很可能是动态原始的。我们推测这种关系的潜在原因。
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