An astrologer places a pen on a printed chart. The finger moves past the glyph for the sun, then stops at the number and the small superscript circle that follows it. That circle, the degrees symbol, is the oldest unbroken notation in Western astrology. It marks the exact position of every celestial body, house cusp, and sensitive point on the 360‑degree wheel of the zodiac. Without it, the chart has no coordinates.
The degrees symbol (°) in an astrological chart denotes the arc of the zodiac between 0° and 360°, divided into twelve signs of 30° each. Each degree is a unit of celestial longitude, and for many astrologers it carries its own symbolic weight through systems like the Sabian symbols, critical degrees, and fixed star associations.
Definition
The degrees symbol is the typographic mark that follows a number to indicate a position on the zodiac circle. In a chart, its written as 15° Aries or 29° 47′ Leo. The number is the degree, the superscript circle is the symbol. The symbol itself is a legacy of the sexagesimal system: the Babylonians divided the sky into 360 equal parts, each called a kush (a degree). The circle that represents the degree is a stylized version of the Babylonian cuneiform sign for “part” or “share.” It entered Greek astronomy through the work of Hipparchus and Ptolemy, and from there into the European astrological tradition.
Where Did the Degree Symbol Come From?
The degree symbol originates in Babylonian astronomy around 1800 BCE. The Babylonians used a base‑60 number system, and they divided the circle of the sky into 360 ush, a word that also meant “field” or “plot.” Each ush was one day’s apparent motion of the sun along the ecliptic. The calculation was political as well as astronomical: 360 was a convenient number for the administrative calendar, and it matched the 360 days of their ideal year.
The symbol itself was a small circle, sometimes written as a dot inside a circle, that appeared in cuneiform tablets as a marker for the unit of arc. The Greeks adopted the notation as the moira (portion), and the circle became the kentron (center) of the degree. Ptolemy, in his Almagest (c. 150 CE), used the degree symbol extensively. He was the first to assign each degree of the zodiac to a specific planetary realm, a system that later became the terms or bounds.
By the medieval period, the degree symbol was standard in Latin astrological manuscripts. The Tetrabiblos was translated into Arabic and then Latin, and the symbol traveled with it. The Renaissance astrologer William Lilly, in his Christian Astrology (1647), used the degree symbol exactly as we do today. It has not changed in four centuries.
What Does the Degree Actually Mean?
The degree symbol is first a tool of precision. A planet at 15° Aries is not the same as a planet at 16° Aries. The difference is one degree of arc, roughly two days of motion for the sun, but for the moon it is about two hours. The degree symbol allows the astrologer to measure aspects, house placements, and the exact timing of transits.
What is the symbolic meaning of the degree symbol?
But the symbol carries more than a mathematical meaning. In the 20th century, the American astrologer Marc Edmund Jones, with the clairvoyant Elsie Wheeler, produced the Sabian symbols in 1925. Each of the 360 degrees received a single phrase designed to evoke an image. 1° Aries: “A woman has risen out of the ocean; a seal is embracing her.” The degree symbol became the portal to a symbolic narrative. Jones’s system was published in The Sabian Symbols in Astrology (1953), and it remains one of the most widely used degree‑based interpretive tools.
The degree symbol also marks the critical degrees. In traditional astrology, 0°, 13°, and 26° of the cardinal signs, 8° and 22° of the fixed signs, and 4° and 17° of the mutable signs are considered violent or void degrees. These derive from the Anareta (the destroyer) in Hellenistic astrology, a degree that was said to be inimical to life. The 29th degree, the anaretic degree, is the final degree of any sign. It is often described as a degree of crisis, urgency, or completion. Not all astrologers agree on its meaning. We have seen charts where the anaretic degree produced a sudden breakthrough. We have also seen it produce a dead end. The degree symbol itself does not dictate the outcome. It marks the point of tension.
How do you read degrees on a chart?
The most immediate use of the degree symbol is in house cusps. The Ascendant at 12° 34′ Sagittarius means the first house begins at that exact degree. The astrologer then looks at the planets that fall near that degree, either by conjunction or by aspect. A planet at 15° Sagittarius is within 3° of the Ascendant, a tight orb. The degree symbol is the ruler of that measurement.
Aspects themselves are measured in degrees. A trine is 120° plus or minus an orb. The degree symbol is the unit of that calculation. Without it, the concept of an orb collapses. The degree is also the base for the partile aspect, an aspect that is exact to the degree. A partile trine is a marriage of precision.
Modern astrologers use the degree symbol to integrate fixed stars. The star Spica is at 23° 50′ Libra in the tropical zodiac (precession adjusted). A planet at 24° Libra is said to be conjunct Spica if the orb is within 1°. The degree symbol bridges the planet and the star.
The degree symbol also appears in the Arabic parts (the Lots). The Lot of Fortune is calculated by adding the degree of the moon to the degree of the Ascendant, then subtracting the degree of the sun. The result is a degree in the zodiac. The symbol is the denominator of the equation.
The degree symbol in astrology shares its notation with the degree in mathematics and navigation. The symbol is the same. The meaning is different. A mathematician uses the degree to measure an angle. An astrologer uses it to measure a position on a circle that is also a symbolic map.
What are the major degree-based systems?
The Sabian symbols are the most famous degree‑based system, but they are not the only one. The German astrologer Alfred Witte, founder of the Hamburg School of Astrology, used the 360° dial with midpoints. A planet at 15° Aries has a midpoint with a planet at 15° Libra. The degree symbol is the unit of that harmonic relationship. Witte’s system, developed in the 1920s, is still taught in Uranian astrology.
Another system is the decans, the ten‑degree divisions of each sign. The decans come from Egyptian astronomy, where each decan was a star group that rose for ten days. The degree symbol marks the boundary between decans. A planet at 9° 59′ Leo is in the first decan. At 10° 00′ Leo, it is in the second. The degree symbol is the moment of transition.
Ptolemy assigned planetary rulers to each degree in his Table of Terms. The terms are the oldest surviving degree‑by‑degree system. They are not widely used today, but they appear in traditional astrology for timing and for the profection of the Ascendant.
What are common misconceptions about degrees in astrology?
That the degree symbol itself has magical power. The symbol is a notation. It is not a talisman. The meaning comes from the degree’s position, its relationship to fixed stars, and its symbolic overlay. The symbol alone does not cause events.
That the 29th degree is always catastrophic. The anaretic degree is a degree of finality, but it can also be a degree of mastery. The ancient texts called it anareta (the destroyer) only when it triggered a malefic planet. A well‑aspected planet at 29° can produce a high degree of expertise. The symbol marks the edge. The rest depends on the chart.
That each degree has a fixed meaning. The Sabian symbols are a system of interpretation, not a universal law. Two astrologers may read the same degree differently. The degree symbol is a coordinate. The meaning is an art.
FAQ
What does the degree symbol mean in astrology?
It marks the exact position of a planet, house cusp, or point on the 360‑degree zodiac. The number before the symbol is the degree of that sign.
How do I read the degrees on an astrological chart?
Look for a number followed by a small superscript circle, for example 15° Aries. That means the planet is 15 degrees into the sign of Aries. The symbol is always attached to the number.
What is the significance of the 29th degree?
The 29th degree of any sign is called the anaretic degree. It is considered a degree of urgency, completion, or crisis, but its effect depends on the planet and aspects involved.
What are Sabian symbols?
Sabian symbols are a set of 360 phrases, one for each degree of the zodiac, created by Marc Edmund Jones and Elsie Wheeler in 1925. Each phrase is an image meant to evoke the essence of that degree.
The degrees symbol is the spine of the chart. It gives every point a coordinate, every aspect a measure, every symbol a place. Without it, the chart is a circle without numbers. For a deeper look at how degrees interact with the twelve houses, see our guide to astrological houses. The full system of symbols, including the degree sign, is catalogued in our glossary of astrological symbols. And for the most detailed treatment of the 29th degree and other critical points, read our guide to the anaretic degree. The degree symbol is not a mystery. It is a tool. And like any tool, it works best when it is understood.