rektacencija

rektacencija

A celestial coordinate; it is the angular distance measured from the vernal equinox eastward along the celestial equator to the hour circle of a given star or other celestial body. It can be defined also as the arc of the celestial equator or the angle at the celestial pole between the hour circle of the vernal equinox and the hour circle of the body.

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Industry/Domain: Astronomy
Category: Mars
Company: NASA
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Mars

Astronomy; Mars

Mars is the fourth planet from the Sun. Mars' diameter is 6,790 km and takes 687 days to orbit the Sun. Mars is named after the Roman god of war. In Eastern Asian cultures Mars is ...

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prolecna ravnodnvevnica

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The position on the celestial sphere occupied by the sun on or about march 21 when its path on the ecliptic crosses the celestial equator going from south to north. This point is ...

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Astronomy; Mars

The position on the ecliptic occupied by the sun about december 22 when it reaches its greatest southerly declination.

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