The positions of 57 selected stars are specified relative to the first point of Aries.
2.
The First Point of Aries, the location of the vernal equinox, is named for the constellation.
3.
In sidereal astrology, by contrast, the first point of Aries remains aligned with the Aries constellation.
4.
The First Point of Aries is considered to be the celestial " prime meridian " from which right ascensions are calculated.
5.
On Earth, vernal equinox is at 0?longitude, on the First Point of Aries, meaning that longitude of vernal equinox is 0?
6.
I think it is probably marking the apparent path of the first point of Aries, which is commonly used as the reference for celestial navigation.
7.
The "'First Point of Aries "'is the location of the vernal equinox, and is named for the constellation of Aries.
8.
It starts on the sunrise after the first new moon after Sun crosses the celestial equator from south to north after the spring equinox and enters the First Point of Aries.
9.
While the general consensus among Western siderealists is that the star Alcyon represents the first point of Aries, differences arise because of the indefinite ancient boundaries of the constellation of Aries.
10.
Sidereal hour angle is a measurement between 0 and 360 degrees, indicating how far west a body is from an arbitrarily chosen point on the celestial sphere called the First Point of Aries.
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