Fixed Star Castor

Castor at 20°14′ Cancer has an orb of 2°20′
Fixed Star Castor

Gemini Constellation [Stellarium]

The Sun joins Castor on July 12

Fixed star Castor, Alpha Geminorum, is a complex multiple-star system located in the head of the Northern Twin of Gemini Constellation. Combined magnitude 1.58, spectral type A1.

Castor is designated α, but it is actually fainter than β Geminorum (Pollux). Although Castor appears to the naked eye as a single star, it is a multiple-star system made up of six individual stars (sextuple star system). All three visual components – Castor A, Castor B and Castor C – are spectroscopic binaries, pairs of stars locked in tight orbits.

Castor A is composed of a white star and a red dwarf companion. Castor B also consists of a white star and a red dwarf. Castor C consists of two red dwarf stars believed to have identical properties. [1]

Castor A1.93A1V + dM1e
Castor B2.97Am + dM1e
Castor C9.83dM1e + dM1e

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.

Castor A and B

Castor A and B []

20002050Fixed StarOrb

Castor Astrology

Fixed star Castor has the spectral type A1, indicating the planetary nature of Venus.

CASTOR. α Geminorium. A binary star, bright white and pale white, situated on the head of the Northern Twin. 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. According to Ptolemy it is of the nature of Mercury; to Wilson, Simmonite and Pearce, of Mars, Venus and Saturn; and, to Alvidas, of the Moon, Mars and Uranus. 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. [2]

CASTOR. α Geminorium. A complex system of stars, and all revolve around a common center once every 380 years. The main star has a spectral characteristic of A2 and the companion has a spectral class of AO. Each of the stars has an invisible companion and in reality this is a sextuple system. It is a bluish-white system. Of yore they were a portent of violence and mischief. They produce sudden rises and honors, followed by a fall, failures, gains, losses, troubles, afflictions; keen intellect, disappointments, fortunes, restrictions, turbulence, imprisonment. [3]

Castor is one of the Twins and Pollux the other. While Castor has a Venusian nature (according to its spectral type) and Pollux a nature as that of Mars, Castor has always been considered to portend mischief and violence while Pollux eminenece and renown. This, of course, is due to the fact that the energy of Mars can be extremely valuable in such areas as war and business and politics, while Venus can cause an indiolent character leading to his own destruction. The other, and opposite, indications of these stars include for Castor a keen mind and many travels, and for Pollux a cruel, rash nature and a propensity to be connected with poisons. [4]

Castor (Apollo), Alpha Geminorum. 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. [5]

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. The 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. [6]

Fixed star Castor the front of the stomach and the parathyroids. [7]

Constellation Gemini

Ptolemy makes the following observations; the stars in the feet of Gemini have an influence similar to that of Mercury, and moderately to that of Venus; the bright stars in the thighs are like Saturn. It is said to cause trouble and disgrace, sickness, loss of fortune, affliction and danger to the knees. By the Cabalists it is associated with the Hebrew letter Qoph and the 19th Tarot Trump, The Sun”. [2]

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. [8]

Alpha Geminorum, Castor

Alpha Geminorum, Castor []

Fixed Star Castor Conjunctions

Ascendant conjunct Castor: Blindness, bad eyes, injuries to the face, disgrace, stabs, wounds, imprisonment. [2]

A splendid and illustrious life; glorious, mighty and commanding nature; fame, busy with many activities, bountiful resources, well known or feared in cities and regions. Prosperity from youth and in own city. [9]

Arnold Schwarzenegger 0°22′ (and Mercury), Cecilia Bartoli 1°21′, Rudolf Hess 1°29′

Conjunct Ascendant born in the day: Natives who are lovers of letters, scholars, popular speakers, ingenious, lovers of music and the arts, who hit the mark, good-looking, capable of many activities, dignified, pious, religious, fit for business, well known or those who acquire gold and silver and other riches thanks to fortunate relationships or exchanges and who retain their noble feeling even in misfortune. [9]

Cecilia Bartoli, Rudolf Hess

Conjunct Ascendant born at night: They claim to be wise and are braggarts and affected and pretenders. They are nevertheless erudite, have a good memory, are capable of teaching and are pure in their desires. [9]

Arnold Schwarzenegger 0°22′ (and Mercury).

Midheaven conjunct Castor: A splendid and illustrious life; glorious, mighty and commanding nature; fame, busy with many activities, bountiful resources, well known or feared in cities and regions. Prosperity from youth and in own city. [9]

Roman Polanski 0°12′, Tom Brady 0°19′, Joe Exotic 0°32′, Allison DuBois 2°00′, Monica Lewinsky 2°08′

Descendant conjunct Castor: A splendid and illustrious life; glorious, mighty and commanding nature; fame, busy with many activities; bountiful resources; well known or feared in cities and regions. Prosperity around middle age or through marriage or women. [9]

Ariana Grande 0°31′, Nero 0°33′, Alexis Arquette 0°37′ (and POF), Megan Fox 0°40′, Niccolo Machiavelli 1°29′, Elizabeth II 2°11′ (and N.Node)

Imum Coeli conjunct Castor: A splendid and illustrious life; glorious, mighty and commanding nature; fame, busy with many activities, bountiful resources, well known or feared in cities and regions. Prosperity in old age or through savings, investments or pensions, death will be famous and known to all. [9]

Conor McGregor 1°31′ (and Sun), Immanuel Kant 2°15′. 

Part of Fortune conjunct Castor: Noor Inayat Khan 0°04′, Charles Manson 0°04′, Alexis Arquette 0°11′ (and DC), Bonnie Parker 0°37′ (and Venus), M. C. Escher 0°45′, Michael Bloomberg 0°47′, Pablo Escobar 1°12′, Phil McGraw 1°15′, James Joyce 1°28′, Queen Camilla 1°38′ (and Mercury), Erwin Rommel 1°45′, Sarah Paulson 2°03′.

Sun conjunct Castor: Prominence in occult matters, government work dealing with foreign affairs, serious accidents, blows, stabs, shooting, shipwrecks, injuries to the face, blindness, disease, violent fevers, evil disposition, rape or murder committed or suffered, imprisonment, banishment, decapitation. [2]

Preferment in writings, business, government, and all matters connected with the public. Fame, good or bad, is possible, sometimes a rather high price must be paid to attain prominence. Possible domestic or other losses. This could involve business losses. [3]

Nikola Tesla 0°25′, Bill Cosby 0°36′, Pablo Neruda 1°18′ (and Moon), Henry VIII 1°24′, Conor McGregor 1°43′ (and IC), Donald Rumsfeld 1°48′ (and Pluto), Courtney Love 2°05′.

Moon conjunct Castor: Timid, sensitive, lacks confidence, occult interest and psychic ability, blindness, injuries to the face, disgrace, stabs, wounds, imprisonment. [2]

Preferment in astrology, and affairs connected with the public. Family ties, while appearing strong, are subject to undermining influences. Some psychic ability apparent. These natives are sensitive. A tendency towards taking offense rather quickly. [3]

A splendid and illustrious life; great, distinguished and opulent nature. [9]

Augusto Pinochet 0°05′‚ Liza Minnelli 0°20′ (and Saturn), Pablo Neruda 0°49′ (and Sun), Theodore Roosevelt 1°25′, Drew Barrymore 1°47′.

Mercury conjunct Castor: Remarkable psychic powers entailing criticism and ridicule but eventual prominence. [2]

Natives with a well-aspected Mercury will have psychic ability, however, if Mercury is adversely aspected to Neptune, this psychic ability can create confusion in particular with a negative or no Moon aspect, and there is the possibility of turbulence. Such natives might appear normal but are plagued with internal dissension. Prominence is possible. [3]

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. [7]

Steve Forbes 0°10′, Queen Camilla 0°25′ (and POF), Arnold Schwarzenegger 1°27′ (and AC), Salman Rushdie 1°52′

Venus conjunct Castor: Strange and peculiar life, many extreme ups and downs, unfavorable for marriage. [2]

These natives have the ability to overcome adversity, and generally such natives lead a life that is out of the ordinary. This conjunction is not particularly good for marriage unless the marriage partner is of a congenial nature. The more negative nativities can experience many or problems, martial, violence, even chronic, difficult-to-diagnose or serious illness possible. [3]

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. [7]

Alan Leo 0°03′, Judy Garland 0°18′, JonBenét Ramsey 0°32′, Bonnie Parker 0°56′ (and POF), George H. W. Bush 1°43′, Mel B 1°58′

Mars conjunct Castor: Evil disposition, much travel, aimless life, many ups and downs. [2]

These natives will have it made, success seems to come to them, when for some reason conditions change. The kind of changes can be many, illness, marital problems, even legal matters, regardless of what causes the conditions, such natives will find their life altered, some might even become almost ‘basket’ cases, and their life style will go into another direction. The more strong-willed will make a comeback, in time. Violent conditions also possible under this conjunction. [3]

Marie Antoinette 0°22′, RuPaul 1°05′

Jupiter conjunct Castor: Philosophical and occult interests, loss through law, speculation or travel, danger of judicial sentence. [2]

High preferment in matters connected with public affairs or dealing with the public. There can be sudden fame, good or bad. [3]

Benito Mussolini 0°04′, Bruce Willis 0°16′, Margot Robbie 0°36′, >Frida Kahlo 1°29′, Marshall Applewhite 1°47′ (and Pluto), Jim Jones 2°20′ (and Pluto), Nostradamus 2°23′ (and Saturn: DD).

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. [2]

Leonardo DiCaprio 1°05′, Liza Minnelli 1°29′ (and Moon), André the Giant 1°32′, Nostradamus 2°03′ (and Jupiter: DD).

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. [2]

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. [7]

Michael Moore 0°17′, Nicholas Culpeper 0°34′, Oprah Winfrey 0°42′, Vladimir Putin 1°11′, Henri Matisse 1°55′

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. [2]

Josef Mengele 0°10′

Pluto conjunct Castor: James Dean 0°04′, Marshall Applewhite 0°11′ (and Jupiter), Jim Jones 0°14′ (and Jupiter), Rupert Murdoch 0°29′, Jacqueline Kennedy Onassis 0°52′, Elizabeth Taylor 0°54′, Ted Kennedy 0°58′, Warren Buffett 1°04′, Clint Eastwood 1°07′, Imelda Marcos 1°34′, Anton LaVey 1°48′, Rolf Harris 1°49′, Andy Warhol 1°50′, Elizabeth Montgomery 1°57′, Anne Frank 2°03′, Martin Luther King 2°06′, Donald Rumsfeld 2°17′ (and Sun), Yoko Ono 2°18′

North Node conjunct Castor: Whitney Houston 0°44′, Johnny Depp 0°54′, Marquis de Sade 1°01′, Elizabeth II 1°15′ (and DC), Bob Marley 1°25′, Hugh Hefner 1°51′, Marilyn Monroe 2°18′

South Node conjunct Castor: Holly Parker 0°04′, Kirk Douglas 0°59′, M. C. Escher 1°03′, Michael Moore 1°59′


  1. Castor (Alpha Geminorum): Star Facts.
  2. Fixed Stars and Constellations in Astrology, Vivian E. Robson, 1923, p.46, 154-156.
  3. The Power of the Fixed Stars, Joseph E. Rigor, 1979, p.104-106.
  4. Fixed Stars and Judicial Astrology, George Noonan, 1990, p.39-40.
  5. Fixed Stars and Their Interpretation, Elsbeth Ebertin, 1971, p.33.
  6. The Living Stars, Dr. Eric Morse, 1988, p.43.
  7. The Fixed Star Health and Behavior Imbalance, Ted George and Barbara Parker, 1985, p.52-53.
  8. Star Names: Their Lore and Meaning, Richard H. Allen, 1889, p.228.
  9. Shiny stars, passionate, harmful, rescuers. Anonymous from the year 379, translation by Giuseppe Bezza from CCAG V/1 pp. 194-211.
  • All fixed star positions are for the year 2000. Add one degree per 72 years to correct for precession.

11 thoughts on “Fixed Star Castor

  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.

  3. I wish that theres more info for Mars conjunct Castor since I have it on 0 orb, conjunct Chiron.

  4. Thanks for that again Jamie. You cannot really mean though though that one aspect in anyone’s chart paints the whole picture. However, the July 13th eclipse was opposite Pluto at 20.40 degrees. Now what did that mean for the world with the powerful Sun and Moon together ??

  5. I cannot get busy with other charts because this bothersome character always shows up just to use our yard. Castor is a evil star in square to Venus conjunct Saturn. This jerk is deceitful and withdraws from wife and children. I feel sorry for his family who appears to try to make a life without this childish useless father showing up for someone to help out. This character will use anyone acting sympathetic until he gets his claws into someone to bail him out. Not all Pisces are losers but his Sun joins Scheat who spends his life dreaming of impossibilities. His wife works yet he want them to live out in the wilderness.

    • Up yours…and around the corner
      Castor Sun 20.40 square Mars,square pluto,square Saturn

    • Vivian Robson wrote this in London in 1923. Because of the law and the influence of the Church, he wrote “evil disposition” instead of “gender diverse”. I thought it would be helpful to add (LGBT) but I guess not.

Leave a Reply