A superior planet opposite the Sun in the sky — best time to observe.
Definition
Opposition occurs when a superior planet (Mars through Neptune) is on the opposite side of Earth from the Sun — ecliptic longitudes differ by 180°. The planet rises at sunset and is visible all night, often at minimum distance and maximum brightness.
3D illustration
At opposition, Earth lies between the Sun and a superior planet.
Use the menu and time controls to explore. Based on Jean Meeus' Astronomical Algorithms.
