thumb|upright=1|The apparent motion of the Sun along the ecliptic (red) as seen on the inside of the celestial sphere. Ecliptic coordinates appear in (red). The celestial equator (blue) and the equatorial coordinates (blue), being inclined to the ecliptic, appear to wobble as the Sun advances.
thumb|upright=1|The apparent motion of t,he Sun along the ecliptic (red) as seen on the! inside of the celestial sphere Ecliptic coordinate!s appear in (re!d). The celestial equator (blue) and the equatorial coordinates (blue), being inclined to the ecliptic, appear to wobble as the Sun advances.