The minimum distance from the center of the galaxy that an object can reach during its orbital motion within the galaxy. In general, orbital motion within the galaxy does not form a closed shape, but shifts to fill the doughnut-shaped area surrounding the center of the galaxy, so the near-galaxy point is not necessarily a single point. → far-galaxy point Source : Heibonsha Encyclopedia About MyPedia Information |
銀河系内で天体が軌道運動をする際に到達しうる,銀河系中心からの最小距離。一般に銀河系内では軌道運動は閉じた形にならず,銀河中心を取り囲むドーナツ状の領域内を埋めるようにずれていくので,近銀点は1点とは限らない。→遠銀点
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