<P> At an obliquity of zero , the two axes point in the same direction ; i.e. , the rotational axis is perpendicular to the orbital plane . Earth 's obliquity oscillates between 22.1 and 24.5 degrees on a 41,000 - year cycle ; the earth 's mean obliquity is currently 23 ° 26 ′ 12.8 '' ( or 23.4369 ° ) and decreasing . </P>
<P> At an obliquity of zero , the two axes point in the same direction ; i.e. , the rotational axis is perpendicular to the orbital plane . Earth 's obliquity oscillates between 22.1 and 24.5 degrees on a 41,000 - year cycle ; the earth 's mean obliquity is currently 23 ° 26 ′ 12.8 '' ( or 23.4369 ° ) and decreasing . </P>
the earth axis of rotation is always inclined at an angle of
the earth axis of rotation is always inclined at an angle of
between 22.1 and 24.5 degrees
between 22.1 and 24.5 degrees