Quick Answer
Combustion (Asta) Dosha is a planet sitting so close to the Sun that its light gets swallowed — astangata, or "combust". The planet is dimmed on the outside, so the confidence and visible expression of whatever it rules can feel muted, pulled into the orbit of the ego and the father-and-authority Sun. It is real, and it is routinely overstated. The orb differs from planet to planet, a combust planet still works inwardly, and combust Mercury or Venus is so common and so mild that most charts carry it without harm. Degrees and the surrounding chart settle the verdict, so measure before you worry.
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What is Combustion (Asta) Dosha?
Combustion — asta in Sanskrit, meaning "set" like a setting star — is a planet scorched by its nearness to the Sun. Get close enough and, the way a star disappears in daylight, the planet loses its heliacal visibility and, the classics say, some of its outward power. The technical name is astangata graha.
Because the Sun is ego, authority and the father, a combust planet often has its affairs drawn into the Sun's gravity: the native expresses that planet through their own identity, or through a father's influence, more than as a free agent. People read "combust" and picture a dead planet. It is nothing of the sort. Combustion turns a planet inward far more than it destroys it — the function goes quiet on the surface and runs intense underneath. Mercury, which can never wander far from the Sun, is combust in an enormous share of charts, and those people are perfectly articulate. Context is everything.
How Combustion (Asta) Dosha forms in the birth chart
Combustion is measured by a planet's distance from the Sun in longitude, and — this matters — the orb is not the same for every planet. The common classical figures hand the widest orbs to the slower or dimmer bodies: the Moon combust within about 12°, Mars within 17°, Mercury within 14° (about 12° when retrograde), Jupiter within 11°, Venus within 10° (about 8° when retrograde), and Saturn within 15°. Inside that outer band lies a much tighter "cazimi" zone — the heart of the Sun, within roughly 1° — which some traditions read as a surge of strength, not a burn. Retrograde planets take a narrower orb because their approach to the Sun works differently. The Sun itself is never combust. Always check the exact longitudinal gap and the planet's motion before you declare asta: a planet 11° from the Sun is combust as Mars but free as Jupiter.
Effects of Combustion (Asta) Dosha
A combust planet expresses quietly, privately, or through the lens of the self and the father instead of out loud. Combust Mercury makes a thinker who chews things over inwardly before a word leaves the mouth. Combust Venus makes love and comfort feel personal and understated, not performative. Combust Mars turns drive inward as sheer willpower — or, when afflicted, as frustration held under the surface. Combust Jupiter can bind wisdom up with personal identity or a father's beliefs. The house and the planet set the arena: a combust 7th-lord touches how partnership shows in the world, a combust 10th planet touches public recognition. There is a genuine upside to name — closeness to the Sun can lend a planet's work intensity, focus and a strong personal stamp. Combustion seldom erases a significance; it recolours it toward the inward and the ego-linked. Balanced reading beats alarm every time.
How serious is it? Cancellation & exceptions
Combustion is one of the most over-diagnosed conditions in the whole tradition, mostly because Mercury and Venus fall combust so often — they orbit close to the Sun and simply cannot travel far from it, so a large slice of humanity carries a combust Mercury or Venus and lives an entirely capable, ordinary life. That fact alone should take the fear out of the word. Severity scales with tightness: a planet a degree or two from the Sun feels the burn more than one near the edge of the orb, and the cazimi core (within about 1°) is usually read as strengthening. A combust planet that is otherwise dignified, in its own sign or exaltation or well aspected, withstands the heat, and a retrograde combust planet is frequently gentler still. The pinch also eases across the dashas and transits when the planet pulls away from the Sun. Treat it as a dimming to work around, most often a mild one, not a switch that turns the planet off.
Remedies for Combustion (Asta) Dosha
Because the Sun does the burning, the remedies open with a healthy, honoured Sun. Sunday observance, Surya Namaskar, an offering of water (arghya) to the rising sun, and a respectful footing with the father and with legitimate authority all ease the ego-pressure the planet is under. Then feed the combust planet through its own significations — its weekday, its beej mantra, and charity that suits it. For a combust Mercury, support students and communication; for a combust Venus, tend your relationships and your care for comfort and the arts. Cultivating the planet's quality on purpose, so it is never left mute, is the most practical everyday remedy of all. Devotion to the planet's own deity alongside Surya fits the picture well. Skip any assumption about gemstones — a stone can over-fuel a combust planet and do more harm than good, so leave that call to a full reading with an astrologer who has the chart in front of them.
Remedies are traditional and general — never a substitute for professional advice. No gemstone or ritual should be undertaken on the strength of a single combination; analyse the whole birth chart with a qualified astrologer first, and consult appropriate professionals for medical, legal or financial matters.
Key Takeaways
- Combustion (Asta) Dosha = a planet too close to the Sun in longitude, its light "set" (astangata).
- The orb differs by planet — e.g. Mars ~17°, Saturn ~15°, Mercury ~14°, Venus ~10°, Jupiter ~11°.
- It dims a planet outwardly and pulls its matters toward the ego and the father, but rarely erases them.
- Mercury and Venus combustion is very common and usually mild — not a cause for alarm.
- The cazimi core (within ~1° of the Sun) can strengthen a planet rather than burn it.
Combustion (Asta) Dosha — Frequently Asked Questions
What is Combustion (Asta) Dosha?
It is when a planet sits so close to the Sun that its light is overpowered — called astangata, or combust. The planet is dimmed in its outward expression, so the confidence of what it rules can feel muted or absorbed into the ego. It is common and usually mild rather than severe.
Is a combust planet completely useless?
No. Combustion tends to internalise a planet, not destroy it — the function goes quiet on the surface and can be intense underneath. Many capable, articulate people have a combust Mercury or Venus. A dignified or cazimi planet can even work strongly despite the closeness.
How close to the Sun does a planet need to be to combust?
It varies by planet. Common orbs are about 12° for the Moon, 17° for Mars, 14° for Mercury, 11° for Jupiter, 10° for Venus and 15° for Saturn, with narrower orbs when retrograde. Always measure the exact longitudinal gap before declaring combustion.
Why is Mercury combustion so common?
Mercury never strays more than about 28° from the Sun, so it frequently falls inside the combustion orb. That is why a large share of charts carry a combust Mercury, and those people speak and think perfectly well. It is a reason to stay calm, not worried.
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