Definition
Heart of the Sun is the English name for cazimi, a traditional condition in which a planet is extremely close to the Sun’s exact zodiacal degree. The classical boundary is usually about 17 arcminutes from the Sun, although some astrologers use wider limits. It is more precise than a general Sun conjunction and is distinguished from combustion, in which proximity to the Sun is typically considered weakening or obscuring.
Astrological Meaning
A planet in the Heart of the Sun is traditionally regarded as strengthened, protected, or granted unusual authority. Its functions may become closely aligned with solar themes such as purpose, visibility, leadership, and conscious direction. Interpretation depends on the planet involved, its sign and house, the houses it rules, and other aspects in the chart. For example, Mercury cazimi may emphasize concentrated thought or communication, while Venus cazimi may focus attention on relationships, values, diplomacy, or artistic judgment. The condition does not automatically make every expression of the planet easy or beneficial.
Why It Matters
Recognizing cazimi prevents an astrologer from treating every close solar conjunction as combustion. In a natal chart, it can identify a planetary function that is central to identity or vocation. During transits, a cazimi moment may symbolize clarification, renewal, or focused developments in the topics governed by that planet, without guaranteeing a particular outcome.
Related Encyclopedia Entries
- Traditional Astrology
- Astrological Terminology
- Natal Chart


