Alpheratz, also known as Sirrah, marks the head of Andromeda and the navel of Pegasus. At magnitude 2.1, it is one of the brightest fixed stars in the northern sky. In classical astrology, its influence is swift, independent, and honor-seeking—qualities that manifest sharply in a natal chart when Alpheratz is angular or conjunct a planet.

The Nature of Alpheratz: Head of Andromeda

Ptolemy in the Tetrabiblos assigned Alpheratz a Venus-like nature, but later authorities like Vivian Robson emphasized its Mercurial and Saturnine undertones. Robson wrote that Alpheratz gives "honor, riches, and a love of horses" but also a "swift, independent, and headstrong character." The star sits at 14° Aries in the tropical zodiac, a degree of initiation and impulsive action.

In my 30 years of practice, I have observed that Alpheratz often appears in the charts of pioneers, inventors, and those who break away from tradition. Its energy is restless—it demands freedom and despises constraint. When prominent, the native may achieve sudden recognition but must guard against recklessness.

Alpheratz in the Natal Chart: Key Placements

The influence of Alpheratz depends on its house, aspect, and conjunction with planets. A conjunction with the Ascendant or Midheaven is most potent. With the Sun, it amplifies leadership and a desire for public honor. With the Moon, it quickens emotions and can indicate a restless home life or frequent travel.

Mercury conjunct Alpheratz sharpens the mind but can make the native argumentative or too quick to speak. Venus here gives artistic talent and a love of luxury, but also a tendency to change partners. Mars with Alpheratz is especially volatile—the native acts with lightning speed and may excel in competitive fields like sports or military.

Saturn or Jupiter in hard aspect to Alpheratz can bring sudden falls from grace if the native acts without foresight. Yet when well-aspected, these same planets confer lasting fame through disciplined independence.

Alpheratz and the Fixed Stars Tradition

Guido Bonatti, in his Liber Astronomiae, listed Alpheratz among the stars of the first magnitude that "give honor and swiftness." He warned that its influence is "like a horse that runs without a rider"—powerful but hard to control. William Lilly used Alpheratz in horary to indicate a quick resolution, but cautioned that the querent might act too hastily.

Modern astrologers often associate Alpheratz with the "Pegasus effect"—a desire to transcend limits. But the star's position at the head of Andromeda, a chained princess, adds a layer of liberation from bondage. Natives with Alpheratz strong may break free from family or societal expectations, sometimes abruptly.

Practical Takeaway

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