Antares

Antares's degree and its axis with Aldebaran

Antares is Alpha Scorpii, a red supergiant of magnitude 1.0 at the heart of the Scorpion. In the tropical zodiac it stood at 9°04′ Sagittarius in 1950, 9°46′ Sagittarius in 2000 and 10°07′ Sagittarius in 2025. It belongs to the constellation Scorpius but sits in the tropical sign Sagittarius, because precession has slid the equinox back against the stars for two millennia, advancing each star about 1° in 72 years.

Your birth year sets the window. With a 1° orb, someone born in 1950 has a planet on Antares between 8°04′ and 10°04′ Sagittarius; someone born in 2025 needs one between 9°07′ and 11°07′.

Antares lies 4.57° south of the ecliptic, close enough for the Moon to pass in front of it in some years. Aldebaran, the eye of the Bull, sits at 9°47′ Gemini in 2000, almost exactly opposite. A planet on one star opposes the other, and astrologers read the pair as an axis between two Martial stars. Ptolemy, in Tetrabiblos I.9, says the bright star in the middle of the Scorpion's body, called Antares, is like Mars and, to some degree, Jupiter.

The rival of Mars

The name means rival of Ares, the Greek Mars, because the star's red colour matches the planet's and the two can look alike when Mars passes nearby. It marks the heart of the Scorpion that, in Greek myth, was sent to kill the hunter Orion. The gods set the two in opposite parts of the sky, so Orion sets in the west as the Scorpion rises in the east.

Chinese astronomers knew Antares as the Great Fire, the central star of the Heart mansion, and watched its position to time the seasons. Across these traditions the star is red, central and hot, a heart that burns.

Mars with Jupiter, and the royal-star tradition

Ptolemy's pairing puts Mars first and Jupiter second. Mars gives courage, conflict and heat; Jupiter gives breadth and generosity. Medieval authors and Vivian Robson in 1923 treated Antares as one of the more dangerous bright stars, linking it with rashness, obstinacy and violence, and also with liberality and a broad mind. Honours gained under it were said to be at risk of ending badly.

Antares is one of the four royal stars of Persia, the Watcher of the West, with Aldebaran, Regulus and Fomalhaut. The scheme is a later tradition. European writers from the late eighteenth century onward attributed it to ancient Persia, noting that around 3000 BCE the four stars lay near the equinoxes and solstices, but the Persian evidence is thin. Modern astrologers often give each watcher a condition, and Antares's is usually put as avoiding obsession.

Read today, Antares describes intensity: full commitment, strong desire and the courage to go to the edge. In Sagittarius, a fire sign of vision and belief, the intensity often attaches to a cause or a conviction. The broad-minded Jupiter side keeps the Mars side honest.

Antares conjunct a planet

The Sun reaches Antares around 1–2 December, so people born then have the Sun on the Scorpion's heart. Astrologers read it as intensity of purpose and a fearless streak inside a Sagittarian temperament. These people often go further than others dare, and they need a goal that deserves the effort.

The Moon on Antares gives deep, strong feeling and fierce reactions. Because Aldebaran is opposite, a Full Moon here links the two stars. Taking time between feeling and acting helps.

Mercury here gives bold, sometimes cutting speech and a talent for strategy. Venus brings passion and intensity in love, with jealousy as its risk. Mars doubles the star's main nature and calls for physical outlets and a clear target. Jupiter matches its second nature and widens the intensity into a cause, teaching or exploration. Saturn contains the fire and can turn it into endurance and long campaigns. Uranus, Neptune and Pluto mark a generation's intensity, not a person's.

Antares on the Ascendant or Midheaven

Antares rising gives a strong, intense presence. People may find you magnetic or intimidating, sometimes both. The tradition warned of rashness on this angle; pausing before acting is the simplest way to work with it.

On the Midheaven the star is read as ambition and the capacity for high achievement, along with the old warning that success can be undone at the peak. Work that channels intensity suits it: crisis roles, competition, research that goes to the root, causes that need a fighter. The usual advice is to let go of rivalries before they grow.