That imaginary line is called as "ORBIT".. Each space object spins around itself, in a particular path called as "ORBIT"
I believe you are referring to an axis.
The line is called an axis.
The imaginary line between the poles of the Earth around which the Earth spins is called the "axis of rotation".
The imaginary line between the poles of the Earth around which the Earth spins is called the "axis of rotation".
Earth spins on a imaginary line called an Axis that's what it rotates on aswell. An axis has an angel for the Earth to spin on. An Equator is another imaginary line.
The axis
The axis
axis
axis
axis
It is called Axis
there are two imaginay line called the prime meridian