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会合周期

3 件の記事

Visual conjunction between the Moon and the planet Venus, the two brightest objects in the night sky

惑星の合(コンジャンクション)とは?天体現象の仕組みと歴史的な接近事例

惑星の合コンジャンクション天文学黄道経度
Visual conjunction between the Moon and the planet Venus, the two brightest objects in the night sky

惑星の合(コンジャンクション)夜空に描かれる天体接近のメカニズム

惑星の合コンジャンクション天文学黄道経度
An angle ε is drawn between two straight lines from Earth to the Sun, and from Earth to the planet. This is demonstrated for different positions along circular orbits, both for planets closer to the Sun (where the angle is always less than 90°), and for outer planets (for which the angle can range from 0° to 180°), while distinguishing east and west sides.

離角(elongation)とは?天文学における惑星と太陽の角度的な距離を解説

離角最大離角内惑星外惑星