What Does Obliquity Mean?

In astronomy, axial tilt, also known as obliquity, is the angle between an object's rotational axis and its orbital axis, which is the line perpendicular to its orbital plane; equivalently, it is the angle between its equatorial plane and orbital plane. It differs from orbital inclination.

What does the word obliquity mean?

1 : deviation from moral rectitude or sound thinking. 2a : deviation from parallelism or perpendicularity also : the amount of such deviation. b : the angle between the planes of the earth's equator and orbit having a value of about 23°27′ obliquity of the ecliptic.

What is a obliquity in geography?

Obliquity – The angle Earth's axis of rotation is tilted as it travels around the Sun is known as obliquity. Obliquity is why Earth has seasons. Over the last million years, it has varied between 22.1 and 24.5 degrees perpendicular to Earth's orbital plane.