Cancer (Karka) sign in Vedic astrology: traits and lord

The hero table lists Cancer's classifications one per row, drawn from Brihat Parashara Hora Shastra (BPHS, R. Santhanam's translation) chapter 4 and P.V.R. Narasimha Rao (PVR), author of Vedic Astrology: An Integrated Approach, chapter 2.

Movable (chara) means a sign whose nature is 'to move and to be dynamic', in PVR's words; fixed signs are 'stable and constant', and dual signs alternate between the two.

Guna is a quality of temperament. Cancer's guna is sattva, which PVR glosses as purity and truthfulness.

Cancer is a night sign (nishaa rasi), so it is traditionally read as strong at night. PVR notes that of the two signs a planet owns, one is a day sign and one a night sign.

It rises with its feet or back (prishthodaya). The direction column and colour (pale red) come from the same set of classifications.

BPHS chapter 4 (verses 10-11) describes Karka as: pale-red; resorting to forests; strong at night; many-footed (a centipede sign); of a bulky body; sattvic in disposition; watery; rising with its back; and ruled by the Moon. BPHS closes by saying the twelve signs are described this way 'to evaluate gross and specific effects'.

Light on Life (Hart de Fouw and Robert Svoboda) gives the symbol's meaning: 'Like its symbol, the crab, whose hard carapace covers a soft underbelly, a Cancerian's formidable intellect sits atop a pool of emotions'.

PVR lists indications for Cancer such as watery fields, rivers, canals, the kitchen and food as places and things, and attractive, emotional, mother-like and sensitive as qualities. He explains that signs stand for situations and influences in a life, while planets stand for people.

These are traditional associations. B.V. Raman, author of Hindu Predictive Astrology, cautions that such descriptions 'are only general in nature and should not be applied hastily'.

A sign's lord is the planet that owns it; in any chart, the lord of the sign in a house is that house's lord. The Moon rules Cancer and no other sign.

The dignity table shows how each placement is read. Moon in the 'own sign' row means the Moon sits in a sign it rules, traditionally read as comfortable. Jupiter's exaltation row means Jupiter is read as strongest here, deepest at 5 degrees of Cancer.

Mars is debilitated in Cancer, deepest at 28 degrees, which means Mars is traditionally read as weakest in this sign. A useful rule of thumb: each planet is debilitated in the 7th sign counted from its exaltation sign, so Jupiter, exalted here, is debilitated in Capricorn, and Mars, debilitated here, is exalted in Capricorn.

Kalapurusha means time personified. BPHS chapter 4 and PVR both give Cancer as the heart of Kalapurusha, and PVR specifies the heart of Lord Vishnu's body.

This is a teaching image for how the signs fit together as one whole, not a reading of anyone's body or health.

Other texts differ. B.V. Raman's Hindu Predictive Astrology (chapter 23) gives Cancer as the chest of Kalapurusha rather than the heart.

Both views are attributed here; Skybond does not pick a winner.

Each year the Sun enters sidereal Cancer on 16 or 17 July and leaves on 16 or 17 August (IST, True Chitra Paksha ayanamsa). In Skybond's computation for every year from 2000 to 2050, entry falls between 16 and 17 July.

Western (tropical) sun-sign dates differ because of the ayanamsa (the offset between the two zodiacs), so the Vedic sun sign is often one sign earlier. Each system is read within its own frame.

B.V. Raman lists Cancer among the signs of long ascension for places north of the equator (the order reverses south of it), so when Cancer is the ascendant it takes longer than average to rise.