The celestial equator is inclined by ~23. 5° to the ecliptic plane. The ecliptic is the apparent path that the Sun traces out in the sky during the year The image shows the relations between Earth's axial tilt (or obliquity), rotation axis and plane of orbit. In Astronomy, axial tilt is the Inclination angle of a planet's rotational axis in relation to its orbital plane. A rotation is a movement of an object in a circular motion A two- Dimensional object rotates around a center (or point) of rotation The orbital plane of an object orbiting another is the geometrical plane in which the orbit is embedded.

The celestial equator is a great circle on the imaginary celestial sphere, in the same plane as the Earth's equator. A great circle is a Circle on the surface of a Sphere that has the same circumference as the sphere dividing the sphere into two equal Hemispheres. In Astronomy and Navigation, the celestial sphere is an imaginary rotating Sphere of "gigantic Radius " EARTH was a short-lived Japanese vocal trio which released 6 singles and 1 album between 2000 and 2001 The equator (sometimes referred to colloquially as "the Line") is the intersection of the Earth 's surface with the plane perpendicular to the In other words, it is a projection of the terrestrial equator out into space. As result of the Earth's axial tilt, the celestial equator is inclined by ~23. In Astronomy, axial tilt is the Inclination angle of a planet's rotational axis in relation to its orbital plane. 5° with respect to the ecliptic plane. The ecliptic is the apparent path that the Sun traces out in the sky during the year

An observer standing on the Earth's equator visualizes the celestial equator as a semicircle passing directly overhead through the zenith. The equator (sometimes referred to colloquially as "the Line") is the intersection of the Earth 's surface with the plane perpendicular to the In Mathematics (more specifically Geometry) a semicircle is a two-dimensional Geometric shape that forms Half of a Circle. In broad terms the zenith is the direction pointing directly above a particular location ( Perpendicular, Orthogonal) As the observer moves north (or south), the celestial equator tilts towards the southern (or northern) horizon. The celestial equator is defined to be infinitely distant (since it is on the celestial sphere); thus the observer always sees the ends of the semicircle disappear over the horizon exactly due east and due west, regardless of the observer's position on Earth. (At the poles, though, the celestial equator would be parallel to the horizon. A geographical pole, or geographic pole, is either of two fixed points on the surface of a spinning body or Planet, at 90 degrees from the Equator, based )

Celestial objects near the celestial equator are visible worldwide, but they culminate the highest in the sky in the tropics. In astronomy the culmination, at a given point of a Planet, Star, Constellation, etc The celestial equator passes through these constellations:

See also

• Celestial pole
• Celestial sphere