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| abstraction > mathematical concept > number > quantity > coordinate component > equatorial coordinate component > distance | 
| distance comparison table | |||||
| Subject | is an instance of | has unit | is a kind of | is a component of | has definition | 
|---|---|---|---|---|---|
| equatorial coordinate component | coordinate component | equatorial coordinate | |||
| length | length unit | quantity | |||
| distance | length | length unit | equatorial coordinate | The distance to a celestial object measured from the center of the Earth or Sun, in units of parsec or lightyear | 
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