Chitra nakshatra: Spica

Chitra, "the bright one", is Spica, the star the Lahiri ayanamsa places near the start of Tula. It spans Kanya and Tula, two padas in each. Its god today is Tvashtar, the craftsman, as in the Kathaka Samhita; the Taittiriya Samhita gives Indra.

Meaning

Chitra means "the bright one", and its star is Spica, alpha Virginis, one of the brightest near the ecliptic.

Spica gives the Indian standard its other name. The Lahiri ayanamsa is also called Chitrapaksha, "on the side of Chitra", because it places Spica near 0° Tula, the boundary at the middle of this nakshatra. It is defined by a value at a date, not tied to the star, and Spica sits about a minute of arc off the boundary under it; the ayanamsa that holds the star exactly there is a different one.

Modern readings follow the craftsman god: beauty made with skill, design and ornament, the architect's and the jeweller's art, and the pull between surface and substance. Mangala, Mars, is its lord in the Vimshottari order, with seven years.

Deity and emblem

Today's books give Chitra to Tvashtar, the divine craftsman, also called Vishvakarma. The Kathaka Samhita and the Taittiriya Brahmana's offerings give Tvashtar too, as Weber reported; the Taittiriya Samhita gives Indra.

The modern emblem is a bright jewel; the medieval lists give a pearl or a lamp, the same idea of brightness in another object.

In the chart

Chitra runs from 23°20′ Kanya to 6°40′ Tula of the sidereal zodiac, the fourteenth of 27 equal parts of 13°20′. It lies across two rashis: its first two padas in Kanya and the rest in Tula. Its four padas of 3°20′ fall in the navamsas of Simha, Kanya, Tula and Vrishchika, so a graha in its first pada stands in Simha in the D9.

Its Vimshottari lord is Mangala, whose period is seven years. When the Moon stands here at birth, the reckoning opens in Mangala's period and counts only the part still to run, in proportion to the part of Chitra the Moon has yet to cross. In 2026 the same stretch of sky is about 17°33′ Libra to 0°53′ Scorpio in the tropical zodiac, by the Lahiri measure; another ayanamsa moves the edges, and a Moon or lagna within a few minutes of arc of an edge can fall in the neighbouring nakshatra in another tool.

Correspondences

Each item with how it stands: “sourced” is in the work cited, “our construction” is EsoTerrier’s own, and “disputed” means the sources disagree.

Deity, as used today: Tvashtar (Vishvakarma), the divine craftsman sourced
Deity in the Taittiriya Samhita (iv.4.10): Indra disputed
Symbol, the modern tradition's: bright jewel sourced
Figure in the medieval lists (Burgess, 1860): a pearl or a lamp sourced
Themes in modern readings, our summary: beauty made with skill: design, ornament, the pull between surface and substance our construction

How the schools read it

The Vedic lists (Taittiriya Samhita iv.4.10, Keith 1914): Indra, where today's lists have Tvashtar (Vishvakarma); the Taittiriya list begins with Krittika.
The Kathaka Samhita (after Weber, 1860): Tvashtar (Vishvakarma), the deity the later lists and today's books keep.
The medieval lists (Burgess and Whitney, 1860): The figure of the asterism: a pearl or a lamp, after the Ratnamala and the Muhurta Chintamani.
Modern Jyotisha: Beauty made with skill: design, ornament, the pull between surface and substance; its symbol: bright jewel.
The 28-nakshatra scheme: Abhijit, in the stars of Lyra, stands between Uttara Ashadha and Shravana in the older lists; the equal division into 27 leaves it out.
Western sidereal (Fagan-Bradley): The same 27 divisions, about 0°53′ further on than Lahiri's; Western siderealists rarely use them.
EsoTerrier: Our chart's text for a Moon here: "Chitra, ruled by Mangala, means the brilliant or the beautiful, and its energy is creative, stylish and drawn to fine design. Valuing inner substance as much as outer brilliance gives that artistry its depth and lasting appeal." Our words.

Claims about it

Chitra's deity and symbol are one fixed set handed down from the Vedas.
disputed

What the record shows: The Vedic lists differ among themselves. For Chitra the Taittiriya Samhita (iv.4.10) gives Indra; the Kathaka Samhita already gives Tvashtar (Vishvakarma), the deity used today. The symbol, bright jewel, is the modern tradition's; here it matches the figure of the medieval lists, a pearl or a lamp.
The nakshatra is a constellation, 13°20′ wide.
false

What the record shows: The nakshatras began as star groups of unequal size, 28 in the Atharvaveda with Abhijit. The equal division into 27 parts of 13°20′ is a later convention; the name points at stars, the division is arithmetic.
The Lahiri ayanamsa fixes the zodiac exactly on Spica, at 0° Tula.
disputed

What the record shows: Lahiri is defined by a value at an epoch (23°15′00″ on 21 March 1956). Spica sits near 0° Tula under it, about a minute of arc off, and drifts by its own motion; the ayanamsa that holds Spica at exactly 180° is a different one, True Chitrapaksha.

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Chitra, the bright one, Spica

Facts