What is obliquity ratio?

1 Answer
Feb 27, 2016

The obliquity describes the angle of tilt of the Earth's axis of rotation.


It is the angle between the plane of the Earth's equator and the plane of the Earth's orbit around the Sun. For the Earth, it is approximately #23^@27'#. It varies slightly because of the force of gravity from the Moon and other planets in our solar system.

*Note: Most of my answer is paraphrased or directly taken from http://www.obliquity.com/info/meaning.html.*