History of the star: A triple star, 1.7, 8.5, and 13, flushed white and ultramarine in Leo. Regulus, Rex, Basilica Stella; Regia; Basiliscus were the Roman titles.

There was a belief that it ruled the affairs of the heavens. Thus, as Sharru, "the King", it marked the 15th ecliptic constellation of Babylonia; in Sogdiana, Magh, "the Great"; in Persia, Miyan, "the Centre"; among the Turanian races, Masu, "the Hero"; and in Akkadia it was associated with the 5th antediluvian "King of the celestial sphere", Amil-gal-ur, …. A Ninevite tablet has: "If the star of the great lion is gloomy the heart of the people will not rejoice."

Sharing the character of its constellation Leo as the Domicilium Solig, in Euphratean astronomy it was Gus-ba-ra, "the Flame", or "the Red Fire", of the House of the East; in Khorasmia, Achir, "Possessing Luminous Rays".

Among the lunar-mansion stars, it was chief in the Hindu 8th nakshatra that bore its name in India as Magha, "the Mighty". In Arabia, with gamma, zeta, and eta of the Sickle, it was the 8th manzil, Al Jabhah, the Forehead.

In Arabia it was Malikiyy, "Kingly"; and Al Kalb al Asad, "the Heart of the Lion".

It was one of the four stars of the ancient Persian monarchy, in 3000 BC, when as watcher of the north it marked the summer solstice. It was seen as one of the Four Guardians of Heaven; one who regulated all things in the heavens; sentinels watching over other stars. This was from the belief that it ruled the affairs of the heavens; a belief current, till three centuries ago, from at least 3000 years before our era. 

This is one of the four key stars in the heavens, also called archangel stars, assigning:

Tasoheter - Michael (Aldebaran) watcher of the East;

Satevis - Oriel (Antares) Watcher of the West;

Hastorang - Gabriel (Fomalhaut) watcher of the South;

Venant - Raphael The Healing Archangel (Regulus) Watcher of the North.

They have been characterized as Horses, reflected both in the famed Four Horsemen of Apocalypse (Revelations 6) and Chariot Horses in the Book of Zechariah.

At one time these four stars marked the two Equinoxes and two Solstices. Aldebaran marked the zero Aries point in 3044 BC, Antares marked zero Libra 3052 BC, Fomalhaut marked zero Capricorn, 2582 BC, Regulus marked zero Cancer 2345 BC.

Early English astrologers made Regulus a portent of glory, riches, and power to all born under its influence. Proclus wrote: "The Lyon's heart is called of some men, the Royal Star, for they that are born under it, are thought to have a royal nativity." 

[Star Names, Their Lore and Meaning, Richard Hinchley Allen, 1889]. 

Robson said it was symbolically called "The Crushing Foot". 

[Fixed Stars and Constellations in Astrology, Vivian E. Robson, 1923]. 

Regulus enters the sign Virgo in 2012 AD. It entered the sign Leo in 156 BC. 

Influences of the 8th manzil (Moon Mansion):  Strengthens buildings, promotes love, benevolence, and help against enemies.(Robson*). 

The astrological influences of the constellation: The Lion is associated with the Hebrew letter Kaph and the 11th Tarot Trump "Strength". (Robson*).

The astrological influences of the constellation given by Manilius:

"Who can doubt the nature of the monstrous Lion, and the pursuits he prescribes for those born beneath his sign? The lion ever devises fresh fights and fresh warfare on animals, and lives on spoil and pillaging of flocks. The sons of the Lion are filled with the urge to adorn their proud portals with pelts and to hang up on their walls the captured prey, to bring the peace of terror to the woods, and to live upon plunder. There are those whose like bent is not checked by the city-gates, but they swagger about in the heart of the capital with droves of beasts ; they display mangled limbs at the shop-front, slaughter to meet the demands of luxury, and count it gain to kill. Their temper is equally prone to fitful wrath and ready withdrawal, and guileless are the sentiments of their honest hearts" [Manilius, Astronomica, 1st century AD, p.237.]

It may convey royal properties, noble mind, frankness, courage. The importance of this star is accentuated by its nearness to the ecliptic. Its effect is in the best sense that of Jupiter and Mars. On the Ascendant, it will give a courageous and frank character, especially if in conjunction with the Sun, Moon, Jupiter or Mercury. Positioned on the MC, Regulus will raise the native to high positions in life, positions far exceeding the environment the native was born into. On the MC it is not only a good omen for a military career, but also for careers connected with the public, such as lawyers, civil servants, bankers and the clergy, especially if Regulus is also in conjunction with the Sun or Moon or with a benefic stellar body. According to tradition, Regulus conjunct MC will bring with it connections with rulers, honorable people or famous people. If the cosmogram as a whole points to this possibility, Jupiter conjunct Regulus is one of the best configurations for success. People like this can reach high positions, positions of trust, preferment and favors; fortunes. Riches and power could fall to these natives easily. Elsbeth Ebertin had this star near the MC (the author of this book, 'Fixed Stars and Their Interpretations' and mother of Reinhold Ebertin author of 'C.O.S.I.'). An old saying goes that Regulus in the 10th house 'makes astrologers to kings. people in high positions and noble men'. Naturally not everyone who has this configuration will make a 'Royal Astrologer' even if he has the necessary knowledge and capabilities. But with Frau Ebertin, this rule was borne out. During the first world war, her book 'Royal Nativities' was published. There followed commissions from royal houses and ruling industrialists (listed in the book Fixed Stars and their Interpretations by Ebertin-Hoffman). Elsbeth Ebertin studied historical events with the planetary configurations in each case and came to the follow conclusion; "when Mars or Saturn are in conjunction with Regulus, especially exciting events are always recorded e.g. assassinations, coup detat, revolutions, revolts, demonstrations, overthrow of heads of state and similar events". (Fixed Stars and Their Interpretation, Elsbeth Ebertin, 1923)

If rising: Great honor and wealth, but violence and trouble, sickness, fevers, acute disease, benefits seldom last, favour of the great, victory over enemies and scandal. The 145th Consideration of Guido Bonnets is as follows: -" That thou see in Diurnal Nativities whether Cor Leonis be in the Ascendant, that is to say, in the Oriental Line or above it one degree or below it three degrees; or whether it be in the tenth in like degrees, without the Conjunction or Aspect of any of the Fortunes, for this alone signifies that the Native shall be a person of great note and power, too much exalted, and attain to high preferment and honors, although descended from the meanest parents. And, if any of the Fortunes behold that place also, his glory shall be the more increased; but, if the Nativity be nocturnal, his fortune will be somewhat meaner, but not much; but if the Infortunes cast their aspects there it will still be more mean; but if the Fortunes behold it also they will augment the good promised a fourth part, and mitigate the evil as much; yet still, whatever of all this happens, it signifies that the Native shall die an unhappy death; or at least that all his honors, greatness and power shall at last suffer an eclipse and set in a cloud". (Robson*).

If culminating: Honor, preferment, good for tune, high office under Government, military success. If with Sun, Moon or Jupiter, great honor and ample fortune. (Robson*).

If with a malefic and the Moon with Antares (9 Sagittarius), Praesepe or the Pleiades, blindness or injuries to the eyes. (Robson*).

With Sun: Power, authority, great influence over friends, honor and riches, but violence, trouble and ultimate disgrace and ruin, sickness, fevers, benefits seldom last. (Robson*).

With Moon: Occult interests, powerful friends, danger from enemies and false friends, gain by speculation, public prominence, great power, honor, wealth, benefits seldom last, violence, trouble and sickness. Make women high spirited and independent. If at the same time the Sun is with the Dragon's Head in Gemini, or Jupiter is in the 10th house in trine to Mars and the Sun is with the Dragon's Head, great preferment even from the lowest sphere to high rank. (Robson*).

With Mercury: Honorable, just, popular, generosity abused by opponents, fame, gain through high position. (Robson*).

With Venus: Many disappointments, unexpected happenings, violent attachments, trouble through love affairs. (Robson*).

With Mars: Honor, fame, strong character public prominence, high military command. (Robson*).

With Jupiter: Fame, high preferment, especially of a military nature, success in the Church. (Robson*).

With Saturn: Just, friends among clergy, success in Church or law, scholarly, wealth, gain through speculation, companies and friends, high position, proud of home and family, good health, heart trouble at end of life. If angular and especially if rising or culminating, public honor and credit. If Mars be with the Pleiades, violent death in a tumult. (Robson*).

With Uranus: Energetic, ambitious, successful, may be unjust or dishonorable, self-aggrandizement, high official position, panders to aristocracy, associated with religion for business purposes, gain through speculation and companies, favorable for marriage, sorrow through death of daughter and disappointment through a son; friends become enemies at end of life, may retire and live in seclusion, violent death through accident or assassination. (Robson*).

With Neptune: Prominent leader, lawgiver, diplomatic, strong character, control over others, influential friends, few if any enemies, domestic harmony, natural death in old age. (Robson*).

References

Fixed Stars and Constellations in Astrology