| NOUN | phenomenon | geocentric parallax, diurnal parallax | the parallax of a celestial body using two points on the surface of the earth as the earth rotates |
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| Meaning | The parallax of a celestial body using two points on the surface of the earth as the earth rotates. | |
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| Synonym | diurnal parallax | |
| Narrower | horizontal parallax | The maximum parallax observed when the celestial body is at the horizon |
| solar parallax | The angle subtended by the mean equatorial radius of the Earth at a distance of one astronomical unit | |
| Broader | parallax | The apparent displacement of an object as seen from two different points that are not on a line with the object |
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