Royal Star Calculation in the Natal Chart

In astrology, certain fixed stars are known as the “Royal Stars.” The four guardian stars of the ancient Persian tradition symbolize the four directions of the heavens and carry the promise of a powerful destiny + a serious trial:

• Regulus (the Heart of Leo) – Guardian of the North
• Fomalhaut (The Mouth of the Fish) – Watcher of the South
• Aldebaran (the Eye of Taurus) – Guardian of the East
• Antares (Heart of the Scorpion) – Guardian of the West

What Are the Royal Stars?

The Royal Stars are known in astrology as the “four sacred fixed stars.” They are not merely points fixed at specific degrees of the zodiac, but cosmic powers that carry a very special energy through their mythological, spiritual, and symbolic meanings.

These stars:

• Aldebaran– It is located around the 9th degree of Taurus. It is regarded as the guardian of the East.
• Regulus– Located at the 29th degree of Leo. It is the guardian of the North.
• Antares– Fixed at the 10th degree of Sagittarius. It is the guardian of the West.
• Fomalhaut– It is at the 4th degree of Pisces. It is the guardian of the South.

In ancient times, these four stars were known as the guardians of the four corners of the sky. It was said that they granted strength to warriors, thrones to kings, and divine inspiration to sages.

Today, when we look at the points in the birth chart where these stars are located, we still see the very same themes:Power, inspiration, success, and at the same time growth that comes through trials.

To find out whether you, too, share a special connection with one of these stars, Birth Chart Calculator to check the planetary degrees in your chart.

Aldebaran: Guardian of the East

Aldebaran, fixed at the 9th degree of Taurus, is the star of honor, courage, and integrity. If you have a planet in conjunction with this star, the theme of truth and righteousness becomes very powerful in your life.

If the Sun or Moon is in conjunction with Aldebaran, the person is generally someone who can stand tall despite great hardships. Even though life presents them with severe trials, as long as they do not stray from honesty, they ultimately achieve great success.

Yet Aldebaran has a shadow side: if you stray from integrity, that same power can bring you down. This star demands an “honorable struggle”; it has no tolerance for opportunism or lies.

In my experience, individuals under the influence of Aldebaran project a reliable and steadfast image in society. Their greatest strength is that they do not abandon their principles, even in difficult times.

Regulus: The Star of Power and Fame

Regulus, shining at the 29th degree of Leo, is associated with leadership, status, and fame. Those whose charts show this star conjunct the ASC (Ascendant), MC (career point), or the Sun are destined to stand out in the public eye.

The gift of Regulus is immense: to be recognized in society, to hold power, to attain fame. Yet along with this gift comes a very great trial:Pride.

Individuals who carry the influence of Regulus achieve lasting success when they use their power to uplift others. But if arrogance or a desire for revenge prevails, their fall from the summit will be just as swift.

In my clients who have a Regulus conjunction, I usually see great potential on the stage, in politics, in the arts, or in the business world. But I always give them this warning: “Allow power to elevate you, but never let it blind you.”

Antares: Guardian of the West

Antares, located at the 10th degree of Sagittarius, is the star of passion and transformation. If the Moon, Mars, or Pluto in your chart is very close to this point, there may be a recurring theme of growing through crises in your life.

Antares does not allow you to remain on the surface. This star demands depth, demands struggle, demands confrontation. Its energy sometimes transforms you through crises. Even if you experience great losses, endings, or shocking events, afterward you are reborn from your ashes, as if rising anew.

The gift of this star is like a rebirth after death. Its shadow, however, can manifest as excessive ambition, obsession, and destructiveness. Antares matures you by confronting you with your own shadow.

In astrological charts, individuals under the influence of Antares learn to stand tall in life despite crises. Their power lies in their ability to transform darkness into light.

Fomalhaut: Guardian of the South

Anchored at the 4th degree of Pisces, Fomalhaut is the star of inspiration, creativity, and spiritual mission. When Neptune, Venus, or the Moon is in conjunction with this star, the native tends to pursue spiritual healing, artistic creativity, or lofty ideals.

The energy of Fomalhaut offers something far beyond worldly success: inspiration and vision. This star grants you the opportunity to experience life with a higher level of consciousness, yet at the same time it can also make you vulnerable to disappointment and illusion.

Individuals who carry this stellar influence often leave a mark in the realms of art, spirituality, philosophy, or the collective consciousness. Their voice becomes a source of hope and light not only for themselves, but also for others.

These fixed stars become prominent especially when the Sun, Moon, Ascendant (ASC), and MC are in a 1° orb of conjunction. (For the Aldebaran–Antares opposition axis, opposition can also be taken into account.) Below you will find both the “how to calculate” section and, for each star, degree ranges, meanings, tests, and plenty of examples.

Visit Birth Chart Calculation tool to discover planetary positions and aspect degrees.

Approximate Degrees for 2025 (Tropical Zodiac)

Fixed stars move very slowly. The values below are for around 2025; there may be differences of 1–2 arcminutes. When casting your chart, still verify them with a current ephemeris/table.

• Regulus ≈ Virgo 0°20′ vicinity
  (historically, it was in the last degrees of Leo and, after the 2010s, moved into the early 0° of Virgo)
• Fomalhaut ≈ Pisces 4°10′
• Aldebaran ≈ Gemini 9°47′
• Antares ≈ Sagittarius 10°01′ (exactly opposite Aldebaran)

Suggested orb:

• ASC/MC for up to 2°,
• Sun/Moon for 1° (max 1°30′),
• For the other planets, 1° is ideal.

Note: Fixed stars are most prominent in conjunction. Classical sources rarely emphasize the square/trine; modern interpretations sometimes broaden this, but for the sake of methodological consistency, focus on the conjunction.

Quick Calculation Guide (4 Steps)

Step 1 – Generate your chart: Use your date, time, and place of birth with the Birth Chart Calculator tool. List the sign + degree values of the planets and angle points.sign + degree values.

Step 2 – Select the target points:

• Sun, Moon, ASC, MC(the strongest influences)
• Second ring: Mercury, Venus, Mars, Jupiter, Saturn
• If you wish: N.Node/MC, Pars Fortunae, Vertex (if advanced)

Step 3 – Match with a 1° orb:

• Is there a±1° orb conjunction for each degree of the star?conjunction?
• Aldebaran–Antares also opposition check as well (±1°).

Step 4 – Connect the interpretation:

• Which planet/aspect is making contact?
• House position and the houses it rules(dispositor/chain)which area is it amplifying?
• A “success formula” is derived from the promise of the star and its trials.

In Which Signs/Degrees Does It Occur? (Brief Guide)

• Regulus (≈ Virgo 0°20′)
  • ASCat29° Leo – 1° Virgorange
  • Sun/Moon/MCthose that fall within the same range
• Fomalhaut (≈ Pisces 4°10′)
  • Pisces 3°10′ – 5°10′ range ASC/Sun/Moon/MC
• Aldebaran (≈ Gemini 9°47′)
  • Gemini 8°47′ – 10°47′conjunctions within this band
  • Sagittarius 8°47′ – 10°47′ bandoppositions (especially ASC/MC/Sun/Moon)
• Antares (≈ Sagittarius 10°01′)
  • Sagittarius 9°01′ – 11°01′conjunctions
  • Gemini 9°01′ – 11°01′ oppositions(especially strong)

Practical tip: If your ASC degree is exactly 0–1° Virgo, you will usually catch Regulus. The same logic applies to the other fixed stars as well.

Regulus (Success, Exaltation, the Test of “Avoiding Revenge”)

Degree band: ≈ Virgo 0°20′ (±1°)
Strongest contacts: ASC, MC, Sun, Moon
Promise: Elevation, leadership, visibility, a sense of nobility.
Lesson: The impulse toward pride and revenge. “Rule with kindness, avoid revenge—only then does elevation endure.”

Regulus Quick Interpretation Template

• ASC conjunction: Innate leadership aura; doors to status and recognition open. Managing the ego is essential.
• MC conjunction: Peak opportunities in career; public recognition and success. What triggers the downfall is “showing off / revenge.”
• Sun conjunction:A powerful sense of identity and authority; a fragile throne if the ethical compass is broken.
• Moon conjunction: A bond with the public, popularity; tests of emotional maturity.

Regulus Examples

1. ASC 0°58′ Virgo → Regulus conjunct ASC (0°20′) ≈ 0°38′ orb
   Rising profile, innate authority. Humility = sustainable ascension.
2. MC 29°42′ Leo → 0°38′ to Regulus
   A star in the public eye; spotlight in career. “Due process” must be chosen over “revenge.”
3. Sun at 29°50′ Leo → 0°30′ from Regulus
   Charisma and visibility; shadow: arrogance. Mentorship and service should be emphasized.
4. Moon 0°45′ Virgo → 0°25′ from Regulus
   Reads the mood of the masses; dramatic ups and downs in moments of vulnerability.

Fomalhaut (Spirituality, Inspiration, the Test of “Pure Intention”)

Degree band: ≈ Pisces 4°10′ (±1°)
Strongest contacts: ASC, MC, Sun, Moon
Promise: Artistic/spiritual inspiration, vision, esoteric wisdom; a “different” path to success.
Challenge: Preserving the purity of intention. Risk of escapism, illusion, scandal.

Fomalhaut Quick Interpretation Template

• ASC:Mystical, magnetic aura; intuitively draws in the masses.
• MC:A breakthrough in a creative, healing, or artistic/scientific career; your “clean image” must be preserved.
• Sun: Identity as a “bearer of inspiration”; prone to disappointment due to excessive idealism.
• Moon: Heightened empathy; emotional boundaries are essential. Scandal trigger: breaches of privacy.

Fomalhaut Examples

1. MC 3°55′ Pisces → 0°15′ orb
   A stage or public role in art/media/therapy; ethical fiction = lasting impact.
2. Sun 4°58′ Pisces → 0°48′ orb
   Creative identity; a “realism protocol” (editor, consultant, supervision) is essential.
3. ASC 5°02′ Pisces → 0°52′ orb
   Magnetic compassion; boundaries and transparency are the armor of your reputation.
4. Moon 3°12′ Pisces → 0°58′ orb
   Social empathy; balance between private life and public life is important.

Aldebaran (Victory Through Integrity, the Test of “Righteousness”)

Degree range: ≈ Gemini 9°47′ (±1°)
Promise: Bold beginnings; leadership earned through honesty.
Test: Staying true to integrity. Aldebaran operates in polarity with Antares—as you rise through one, the other end can tempt you sideways.

Aldebaran Quick Interpretation Template

• ASC conjunction:Directness, pioneering stance. The principle “A word is a sacred promise” serves as a shield.
• MC conjunction: A transparent, aboveboard career; unethical shortcuts will lead to a downfall.
• Sun/Moon: Honest hero archetype; clarity in communication.

Aldebaran Examples

1. Sun 9°10′ Gemini → 0°37′ orb
   Leadership through words and ideas; distortion leads to erosion of reputation.
2. ASC 10°40′ Gemini → 0°53′ orb
   Agile mind + rapid adaptation; clear communication = enhanced reputation.
3. MC 9°00′ Gemini → 0°47′ orb
   In the public eye, a “truthful orator”; transparency is advised instead of behind-the-scenes maneuvering.
4. Moon 8°55′ Gemini → 0°52′ orb
   Emotional bond with the public; stay away from misinformation, always cite your sources.

Antares (Passion, Intense Struggle, the Test of “Avoiding Excess”)

Degree band: ≈ Sagittarius 10°01′ (±1°)
Promise: Great courage, a shocking power of transformation, a “phoenix” effect.
Challenge: Obsession, destructiveness, excessive use of power. “Power + wisdom” is essential.

Antares Quick Interpretation Template

• ASC:Powerful charisma, a combative profile; avoid taking excessive risks.
• MC:Champion of competition; unethical moves return like a boomerang.
• Sun/Moon: Passion engine; anger hygiene and strategic work are essential.

Antares Examples

1. MC 10°45′ Sagittarius → 0°44′ orb
   In your career: “high risk, high reward”; risk management = sustainability.
2. ASC 9°15′ Sagittarius → 0°46′ orb
   An impulsive image; cultivating patience and moderation is essential.
3. Sun 10°50′ Sagittarius → 0°49′ orb
   Charisma + competitive spirit; ethical breaking point → rapid downfall.
4. Moon 8°59′ Sagittarius → 1°02′ orb (on the cusp)
   Emotional intensity; mind and body should be balanced through sports or meditation.

Aldebaran ⟷ Antares Opposition: Axis Logic (Bonus)

These two stars are in exact opposition on the axis. When there is a conjunction with one, there can be an opposition to the other.

• Aldebaran emphasis: “Advance with integrity”
• Antares emphasis: “Rule your passion with wisdom”
  If both are active in the chart,the combination of ethical transparency + strategic moderationunlocks a “destiny gate.”

Example:

• Sun 9°50′ Gemini (conjunct Aldebaran, 0°03′) and MC 10°15′ Sagittarius (opposition Antares, 0°14′)
  → Leadership through words/communication + a harshly competitive arena. Solution: open-source communication policy, risk committee, ethical manifesto.

Which Planet Makes You More “Vocal”?

Order of strength (general): ASC ≈ MC ≥ Sun ≥ Moon > Jupiter/Saturn > Mars/Venus > Mercury

• ASC/MC: Life direction and career indicator → a visible outcome in the outer world.
• Sun/Moon: Identity and emotional foundation → the personal story of destiny.
• Jupiter/Saturn: Long-term societal/career influences.
• Mars/Venus/Mercury: A sharp tone in the realm of action/relationships/communication.

Applied Mini Case Set (12 Examples)

1. Regulus–ASC (0°56′): ASC 0°56′ Virgo → Leader’s aura; the governing principle of “avoid vengeance” should be clearly articulated and codified.
2. Regulus–Sun (0°18′): Sun 29°42′ Leo → Spotlight + ego detoxes (coaching).
3. Regulus–MC (0°40′): MC 0°40′ Virgo → Corporate pinnacle; power becomes enduring through an “ethics committee.”
4. Fomalhaut–MC (0°22′): MC 3°48′ Pisces → Artistic/healing career; transparent PR is essential.
5. Fomalhaut–Moon (0°35′): Moon 4°45′ Pisces → Empathic leadership; lessons in emotional boundaries.
6. Aldebaran–Sun (0°11′): Sun 9°36′ Gemini → An intellectual figure shining with integrity.
7. Aldebaran–ASC (0°30′): ASC 9°17′ Gemini → Clear communication = social capital.
8. Aldebaran–MC (0°42′) + Antares opposition (0°42′): MC 9°05′ Gemini / IC 9°05′ Sagittarius → Balance between transparency and competition.
9. Antares–MC (0°20′): MC 9°41′ Sagittarius → Chance to reach the top in competitive fields.
10. Antares–Sun (0°55′): Sun 9°06′ Sagittarius → Passion + vision; protocols of patience.
11. Antares–ASC (0°10′): ASC 10°11′ Sagittarius → Charismatic leadership; risk management is essential.
12. Fomalhaut–Sun (0°05′): Sun 4°15′ Pisces → Inspiration arises; bring idealism down to earth.

“Is It in My Chart?” (Checklist)

• My chart is ready (date–time–place are correct, daylight saving time has been checked).
• ASC/MC/Sun/Moon I noted down my degrees.
• I searched for a ±1° conjunction with Regulus (≈ Virgo 0°20′), Fomalhaut (≈ Pisces 4°10′), Aldebaran (≈ Gemini 9°47′), Antares (≈ Sagittarius 10°01′).
• I also checked the Aldebaran/Antares opposition within ±1°.
• I matched the planet/aspect carrying the influence with the promise + the test of the star.
• House position (and the houses it rules) included to determine the area of life.
• I have written the recipe for success (ethical/boundary/risk protocols).

Brief Interpretation Glossary (Promise + Trial + Remedy)

• Regulus: Ascension + pride/revenge test → humility, ethical governance
• Fomalhaut: Inspiration / spirit + test of pure intention → transparency, clear boundaries
• Aldebaran: Honest victory + test of integrity → open communication, evidence/transparency
• Antares: Passion/power + test of excess → risk management, patience, wisdom

Try Now

Birth Chart Calculator tool to find the degrees of planets and aspects.
Then, using the ranges in this article, make a quick comparison within a ±1° band.
If you detect a Regulus/Fomalhaut/Aldebaran/Antares contact, adapt the above promise–trial–remedy section to the areas of your own life.