solar apex

astronomy

Also known as: apex

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Last updated

July 14, 2026

Quick Summary

The solar apex is a point in the constellation Hercules towards which the Sun and our solar system are moving at approximately 12 miles per second relative to nearby stars. This movement is part of the Sun's overall motion within the Milky Way Galaxy.12

Astronomers calculate solar motion by analyzing the movement of stars. This helps them understand not only the Sun's path but also the dynamics of the Galaxy and its stellar components. The direction the Sun appears to be moving is called the apex of solar motion. The opposite point in the sky, from which the solar system is moving away, is known as the antapex.234

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Milky Way Galaxy
Solar motion calculations from space motions
…reference frame is called the apex of solar motion. In addition, the calculation of the solar motion provides dispersion in velocity. Such dispersions are as intrinsically interesting as the solar motions themselves because a dispersion is an indication of the integrity of the selection of stars used as a reference…
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…reference frame is called the apex of solar motion. In addition, the calculation of the solar motion provides dispersion in velocity. Such dispersions are as intrinsically interesting as the solar motions themselves because a dispersion is an indication of the integrity of the selection of stars used as a reference…
Read More