Then consider a second fictitious Sun travelling along the " celestial equator " at a constant speed and coinciding with the first fictitious Sun at the equinoxes.
2.
Then consider a second fictitious Sun travelling along the " celestial equator " at a constant speed and coinciding with the first fictitious Sun at the equinoxes.
3.
Consider a first fictitious Sun travelling along the " ecliptic " with a constant speed and coinciding with the true sun at the perigee and apogee ( when the Earth is in perihelion and aphelion, respectively ).
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