Apparent place

The apparent place of an object is the position in space as seen by the observer. Because of physical and/or geometrical effects it has a deviation from the "true position".

In astronomy the term "apparent places of stars" means the visual or photographic position of the star, as seen from the moving Earth. For instance, its speed of 30 km per second around the Sun causes an annual aberration of about 20" (10 rad) because the Earth's velocity is about 0.01 percent of the speed of light.

单词	Apparent place
释义	Apparent place 英语百科 Apparent place The apparent place of an object is the position in space as seen by the observer. Because of physical and/or geometrical effects it has a deviation from the "true position". In astronomy the term "apparent places of stars" means the visual or photographic position of the star, as seen from the moving Earth. For instance, its speed of 30 km per second around the Sun causes an annual aberration of about 20" (10 rad) because the Earth's velocity is about 0.01 percent of the speed of light.
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