Castor Star – The Mortal Twin Apollo

Castor is at 20°14′ Cancer with an orb of 2°20′
Fixed Star Castor Star Astrology

Gemini Constellation [Stellarium]

The Sun joins Castor on July 12

Fixed star Castor, Alpha Geminorum, is a 1.9 magnitude complex multiple star system made up of six individual stars, located in the head of the Northern Twin of Gemini Constellation. Although it is designation α, it is actually fainter than β Geminorum (Pollux).

Castor and Pollux were the Two Gods of Sparta in Greece, sons of Leda, Queen of Sparta. Their Roman equivalents are Apollo and Hercules. Pollux (Hercules) comes from the Greek Polydeuces, hence he was the Boxer. Pollux was the immortal twin and a skilled Horseman. When Castor was killed in battle, Pollux asked his father Zeus (Jupiter) that he die to forever be with Castor. Zeus killed Pollux with a bolt of lightning and placed the twins in heaven as the constellation Gemini.


18 ♋ 31
19 ♋ 01
20 ♋ 14
23 ♋ 13
25 ♋ 47

Fixed Star




Castor Star Astrology

Fixed star Castor is of the nature of Mercury. It gives distinction, a keen intellect, success in law and many travels, fondness for horses, sudden fame and honor but often followed by loss of fortune and disgrace, sickness, trouble and great affliction. Its natives are said to be mischievous and prone to violence. It represents Castor, the mortal one of the twins, famous for his skill in taming and managing horses. Sometimes called Apollo, and symbolically named A Ruler yet to Come. [1]

Castor has a Venusian spectra and has always been considered to portend mischief and violence, but can indicate a keen mind and many travels. Venus can cause an indolent character leading an individual to his own destruction. [2]

Castor, in the Twins and together with Pollux, is called “Thiassis eyes”, a name given to these two stars by the ancient Germans. The Babylonians considered both stars as a pair belonging together, as “herdsman and warrior” . The Phoenicians recognized in the twin stars, helpers if in peril on voyages at sea.

Castor is influenced by Mercury and has a blend of Jupiter in it. Linked with the Moon and Mercury, it has the effect of such people being blessed with a good nature and fine morals. It is also supposed to convey refined manners. A conjunction with the Sun or Mars will make for energetic characteristics and a certain tendency for satire and cynicism, depending on the position of Mercury or Mars in the chart as a whole. [3]

Castor, α Gemorium, was the horseman of the twins, just as Abel was the animal keeper, and he shared Abel’s fate of being killed by his brother. Pollux got his brother drunk to make the task easier, or as one wag among classical astrologers put it: He got Castor oiled! In astrology, Castor is counted a star of misfortune, and the specific association with breaking an arm or leg may come from the Ptolemaic classification of this as a Mercury star; a planet which is much associated with the arms, or the limbs generally. Castor is also noted in natal astrology for proneness to nervous breakdowns, and the author has often found it prominent on the horoscopes of his many clients in neurotic distress.

But Castor’s Mercury quality does have a better side to it, as does all else counted ‘bad’ in this world of the heavens. People with it prominent and well aspected are exceptionally gifted intellectually, a good creative quality along with this – a bonus from the combination of intellectual Gemini Constellation and intuitive Cancer Sign. Where these potential geniuses often need help is in not letting their concern for others go ‘over the top’ beyond their own sensible state of responsibility and practical ability to help, the negative qualities of the combined Gemini-Cancer qualities.

Castor’s connection with Mercury goes deeper yet. he Greeks knew it at one time as Apollo, and, at another time, they called the planet Mercury by that name. Still earlier, Apollo was that other sun which we have since called Phaeton, which is no more. And just as that was Sun’s close companion then, so is Mercury its closest one now. And to cap that, Castor, the former Apollo, is in fact a Binary Pair of stars, as once were Sun and Phaeton. A binary pair evokes a deep-seated fear in humanity, an unconscious recall of The Disaster, so that we tend to react to it just as one does all the wrong things in a moment of crisis, if it happens to half-awaken in one some earlier trauma of the same kind. The author has experimented with acquainting ‘Castor-stricken’ clients with the true story behind our fear of binaries, and the results so far in banishing panic reactions in crises have been very heartening. [4]

Castor rules the front of the stomach and the parathyroids in the human body. [5]

Constellation Gemini is said to cause trouble and disgrace, sickness, loss of fortune, affliction and danger to the knees. [1]

Astrologers assigned to this constellation guardianship over human hands, arms, and shoulders; while Albumasar held that it portended intense devotion, genius, largeness of mind, goodness, and liberality. Considered the House of Mercury and a fortunate sign. Chinese astrologers asserted that if this constellation were invaded by Mars, war and a poor harvest would ensue. [2]

Castor Star, Alpha Geminorum

Castor Star, Alpha Geminorum []

Castor Star Conjunctions

Ascendant conjunct Castor: Blindness, bad eyes, injuries to the face, disgrace, stabs, wounds, imprisonment. [1]

Sun conjunct Castor: Prominence in occult matters, government work dealing with foreign affairs, serious accidents, blows, stabs, shooting, shipwreck, injuries to the face, blindness, disease, violent fevers, evil disposition, rape or murder committed or suffered, imprisonment, banishment, decapitation. [1]

Moon conjunct Castor: Timid, sensitive, lacks confidence, occult interest and psychic ability, blindness, injuries to face, disgrace, stabs, wounds, imprisonment. [1]

Mercury conjunct Castor: Remarkable psychic powers entailing criticism and ridicule but eventual prominence. [1]

There are no extreme problems at this point except that the energy flow to the parathyroids may cause an imbalance in the digestive fluids; that is, an imbalance of fluids at times, and at other times, a little less. This is not particularly severe. When the digestive enzymes are abundant, they can eat heavier foods. When low, they should eat lighter foods. Lettuce is excellent for this point.

These are the persons who can write articles or books but success through their writings would not come during their lifetime. Recognition would come after the person has left the earth plane. Only then will they get the recognition and praise they deserve for helping humanity. [5]

Venus conjunct Castor: Strange and peculiar life, many extreme ups and downs, unfavorable for marriage. [1]

This causes the natives to be overly parental in relationships, whether they are business, family, friendships or their marriage partner. They are continually attempting to mother everyone, making sure they are all wearing warm clothes in cold weather or have some hot soup to eat. This is extremely overdone, but it is not really harmful. It can become overbearing, however. [5]

Mars conjunct Castor: Evil disposition, much travel, aimless life, many ups and downs. [1]

Jupiter conjunct Castor: Philosophical and occult interests, loss through law, speculation or travel, danger of judicial sentence. [1]

Saturn conjunct Castor: Timid, distrustful, eccentric, original mind but difficulty in expression, better writer than speaker, considerable intellectual powers, fond of detail, prejudiced against popular opinions, unfavorable for marriage, peculiar domestic conditions, early sickness of children, gain at end of life through hard work. [1]

Uranus conjunct Castor: Conscientious, sensitive, impressionable, great psychic power entailing much public criticism, desirous of pleasing all, favorable for marriage and gain, few, if any, children but harmonious relations with them, loss in early life of the parent of opposite sex to native. [1]

These are the individuals with nervous stomachs, and it is psychological. They have an insecure feeling within and to alleviate the problem, they must find out what makes them insecure, and then do what is necessary to eliminate it. It would be very helpful for these persons to drink a small glass of warm milk before retiring. [5]

Neptune conjunct Castor: Emotional, romantic, fond of pleasure and amusement, connected with or notoriety through watery matters, occult interests, theatrical work and acting, especially in parts where no speaking is required, many removals and journeys, some domestic disharmony or separation, marries too young especially if female, good for gain but loss through friends and speculation, trouble through one or more of the children, death through some Cancer ailment. [1]


1. Fixed Stars and Constellations in Astrology, Vivian E. Robson, 1923, p.46, 154.
2. Fixed Stars and Judicial Astrology, George Noonan, 1990, p.39.
3. Fixed Stars and Their Interpretation, Elsbeth Ebertin, 1971, p.33.
4. The Living Stars, Dr. Eric Morse, 1988, p.43.
5. The Fixed Star Health and Behavior Imbalance, Ted George and Barbara Parker, 1985, p.

* All fixed star positions are for the year 2000. Add one degree per 72 years to correct for precession.

3 thoughts on “Castor Star – The Mortal Twin Apollo

  1. i have a stellium there of mars(16:40 degrees), venus 17:24 degrees) and jupiter (19:53 degrees) in the 12th house.

  2. Castor in Cancer is an evil star especially if it is rising in the ascendant and opposition Uranus plus some squares. I found this star prominent in “The Angel of Death” chart: Josef Mengele the SS doctor. Neptune is conjunct both Castor and Pollux both evil stars. This dreadful doctor caused the deaths of thousands if not millions. He is perhaps the worst Nazi of all of Hitler’s troops. Neptune in Cancer has at least 9 aspects so the evil nature of Neptune is especially highlighted.

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