Inclination is the angle between a reference plane and the orbital plane.

Look up inclination in Wiktionary, the free dictionary.

Inclination may also refer to:

• Slope, tilt, steepness, or angle from horizontal of a line (in mathematics and geometry)
• Axial tilt, also known as equatorial inclination
• Grade (slope), the tilt of a topographic feature (hillside, etc.) or constructed element (road, etc.)
• Depression angle, part of a spherical coordinate system

• Inclination (ethics), an examination of desire in the context of moral worthiness
• "Inclination" (novella), a science fiction novella by William Shunn

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