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天の赤道

2 件の記事

The positive pole of a planet is defined by the right-hand rule: if the fingers of the right hand are curled in the direction of the rotation then the thumb points to the positive pole. The axial tilt is defined as the angle between the direction of the positive pole and the normal to the orbital plane. The angles for Earth, Uranus, and Venus are approximately 23°, 97°, and 177° respectively.

自転軸の傾き（黄道傾斜角）が惑星の気候と季節に与える影響

自転軸の傾き黄道傾斜角季節のメカニズム地球の公転
2026年8月11日続きを読む →
Illumination of Earth by the Sun on the day of an equinox

春分点（3月の分点）の天文学的メカニズムと世界文化への影響

春分天文学春分点昼夜等分
2026年8月11日続きを読む →