ecliptic coordinates
A Dictionary of Astronomy
ecliptic coordinates A system of coordinates that specifies the position of an object in the Solar System relative to the plane of the Earth's orbit, the ecliptic. Ecliptic coordinates of objects as they would be seen from the centre of the Earth (i.e.
geocentric ecliptic coordinates) are given in terms of
celestial latitude and
celestial longitude (also known as ecliptic latitude and longitude). Ecliptic coordinates of objects as they would be seen from the centre of the Sun (i.e.
heliocentric ecliptic coordinates) are given in terms of
heliocentric latitude and
heliocentric longitude.
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© A Dictionary of Astronomy 1997, originally published by Oxford University Press 1997.
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ecliptic coordinate system
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ecliptic
...of the earth's orbit (called the plane of the ecliptic). Because of the earth's yearly revolution around...an annual journey through the heavens with the ecliptic as its path. The ecliptic is the principal axis in the ecliptic coordinate...
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geocentric coordinates
...Various forms of geocentric coordinates are defined: geocentric equatorial coordinates , the most common, have...plane, while geocentric ecliptic coordinates are referred to the ecliptic. Rectangular coordinates can also be geocentric...
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celestial coordinates
...several different reference planes for celestial coordinates. Equatorial coordinates , the most common system, use the celestial equator...their origin can be geocentric or topocentric. Ecliptic coordinates take the ecliptic as their reference plane; they can be geocentric or heliocentric ...
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spherical coordinates
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