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Practical Astronautics (1528 words) |
 | The equatorial plane is inclined to the ecliptic by 23.5 degrees - the earth's axial tilt. |
| The equatorial plane is inclined 23.5 degrees to the ecliptic. |
| LAN realtes the orbits orientation to the Prime Meridian. |
| Orbits and the Ecliptic Plane (994 words) |
| The ecliptic plane is tilted 23.5° with respect to the plane of the celestial equator since the Earth's spin axis is tilted 23.5° with respect to its orbit around the sun. |
| The tilt of the Earth's axis with respect to the ecliptic is responsible for Earth's seasons. |
| The ecliptic plane is inclined at 23.5° with respect to the celestial equator because of the tilt of the Earth's rotation axis with respect to the plane of its orbit around the sun. |
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