Algol

Where Algol sits and how to find it in your chart

Algol is Beta Persei, a star of magnitude 2.1 in the constellation Perseus. In the tropical zodiac it stood at 25°28′ Taurus in 1950, 26°10′ Taurus in 2000 and 26°31′ Taurus in 2025. The movement comes from precession: the zodiac is measured from the equinox, and the equinox slides backwards against the stars, so every star appears to advance about 1° in 72 years. The degree to check therefore depends on your birth year.

Astrologers usually allow an orb of 1° for a fixed star. If you were born in 1950, a planet between 24°28′ and 26°28′ Taurus meets Algol. For someone born in 2025 the window has shifted to roughly 25°31′–27°31′. A planet at 24°40′ Taurus is on the star for the first person and outside the orb for the second.

Algol lies 22.43° north of the ecliptic, so the conjunction is a projection of the star onto the Sun's path, the standard method in natal work. The star is also a famous variable. About every 2.87 days a fainter companion passes in front of it and its light drops for several hours. John Goodricke measured the cycle in 1782–83 and suggested an orbiting body as its cause. Ptolemy, in Tetrabiblos I.9, gives the bright stars of the Gorgon's head the nature of Saturn and Jupiter.

Medusa's head and the star's many names

In Greek myth Medusa was the one mortal sister among the three Gorgons, and her gaze turned anyone who met it to stone. Perseus approached her by watching her reflection in a polished shield, cut off her head, and carried it away in a bag. From her body sprang the winged horse Pegasus. On his way home he used the head to rescue Andromeda from a sea monster, then gave it to Athena, who set it on her shield.

The Arabic name ra's al-ghūl, the head of the ghoul, gave us Algol, and Hebrew sources call it the head of Satan. Chinese astronomers placed it in an asterism named the Great Mausoleum. The images agree on something disturbing in this part of the sky. Greek households and soldiers also painted the Gorgon's face on doors and armour as a charm, which is the other half of the myth: the terrible face kept harm away.

Algol in the classical and later tradition

Ptolemy's Saturn and Jupiter pairing gives Algol Saturn's weight and severity with a Jupiterian share that later writers mostly forgot. Medieval Arabic and Latin authors counted it among the most dangerous stars, especially when it joined the Moon or an angle and Mars was involved. Vivian Robson's 1923 compendium kept that line and connected Algol with violence and, in the old phrase, losing one's head.

Those readings came from a world of war, public execution and short lives, and they were written about the charts of rulers. Countless people with an Algol contact live ordinary lives. Astrologers working now tend to read the star as concentrated force: anger, grief or desire at full strength, and the capacity to look straight at them. The gorgoneion on Athena's shield gives the constructive reading. The same power that petrifies can guard a home, a cause or a person.

Some astrologers judge stars this far from the ecliptic by parans, the moments when a star and a planet rise, culminate or set together, an old technique revived in the twentieth century. This page uses the zodiac conjunction.

Algol conjunct a planet

The Sun passes Algol each year around 16 May, so everyone born in the days either side has a Sun–Algol conjunction. It tends to give a strong will and a pull towards situations that test it. You may find yourself the one who stays calm when something goes badly wrong.

The Moon on Algol was the combination older texts feared most. Read now, it describes an emotional life that runs hot and deep, strong protective reactions and moods that others notice. Learning to name feelings early keeps them from building to an eruption.

Mercury here sharpens speech and can make you the one who says what no one wants to hear. Venus brings intense attraction and the risk of jealousy, along with a love of art that has dark or forceful themes. Mars on Algol was the tradition's harshest reading. The healthy outlet is physical discipline, protective work and courage you choose on purpose.

Jupiter brings out the star's protective side: a fighter for causes, justice or people under threat. Saturn doubles the gravity and gives endurance under pressure, sometimes at the cost of lightness. Uranus, Neptune and Pluto move so slowly that a conjunction marks everyone born over a long span and speaks more about the period than the person.

Algol on the Ascendant or Midheaven

With Algol rising, older authors spoke of danger to the head. Treat that as tradition. In practice it tends to show as presence: a steady gaze, a face that does not hide reactions, and a manner people remember. You may be asked to handle difficult situations because you seem unafraid of them.

On the Midheaven, Algol colours reputation. The person may become known through confrontation, through power that others find hard to ignore, or through work with crisis, loss or danger. A public role that channels intensity into protection suits it well. Some astrologers also note the star on the Descendant or IC, describing intense partners or an intense family history.