Mrigashira

Mrigashira is the fifth nakshatra, spanning the Taurus-Gemini boundary from 53 degrees 20 minutes to 66 degrees 40 minutes of the sidereal zodiac, in the region of Orion's head stars. Its Vimshottari ruler is Mars, its presiding deity is Soma (the Moon god and the sacred draught), and its symbol is a deer's head. The name means the deer's head, and jyotisha reads the mansion through the image of the searching, gentle, restless deer: seeking, curious, and easily startled. It is classed as Deva gana. The Soma association lends it a quality of the sought-after and the delightful. As with every nakshatra, these are the tradition's interpretive layers; the stars involved are the faint group at the head of Orion that Indian astronomy assigns to this segment.

Mrigashira's padas fall in Aries, Taurus, Gemini and Cancer. The deer-head myth most often cited in modern jyotisha manuals, Prajapati pursuing his own daughter in the form of a deer and being shot by Rudra as Mrigavyadha, belongs to a cluster of Puranic stories about divine transgression and punishment rather than to the nakshatra doctrine specifically, and its attachment to this particular mansion is a later interpretive layer rather than a claim made in the earliest sources that fix Soma as presiding deity. Soma here denotes both the Moon god and the sacrificial draught extracted from a plant in Vedic ritual, and the double sense, a substance sought and pressed out, and a heavenly body itself the object of longing, reinforces the mansion's association with searching and desire beyond the deer image alone.

The nakshatra is not the last cut. Each one is divided again into four padas, and most of what a jyotishi reads from a lunar position is read at that level rather than at the level of the nakshatra itself. Mrigashira runs from 53 degrees 20 minutes to 66 degrees 40 minutes of the sidereal circle, and its four padas are three degrees twenty minutes each: the first from 23 degrees 20 minutes of Taurus, the second from 26 degrees 40 minutes of Taurus, the third from 0 degrees 00 minutes of Gemini and the fourth from 3 degrees 20 minutes of Gemini. The Moon crosses a single pada in roughly six hours, so a birth an afternoon apart can fall in two of them.

The arithmetic hides a coincidence that is not one. Twenty seven nakshatras of four padas make one hundred and eight divisions of the zodiac, and the navamsha, the ninth-part chart that jyotisha treats as the most important of all the divisional charts, also cuts the circle into one hundred and eight. They are the same cut. A pada is a navamsha, and naming the pada names the navamsha sign without any further calculation. The four padas of Mrigashira fall in Leo, Virgo, Libra and Scorpio in that order.

Two cautions attach to those degrees. They are sidereal, measured from a fixed point among the stars rather than from the equinox, so they depend on the ayanamsha chosen to locate that point; the Lahiri, Raman and Krishnamurti values differ by up to about a degree, which is a fifth of a pada and enough to move a chart across a boundary. And the equal arcs are a scheme laid over the sky rather than a description of it: the star the nakshatra is named for sits somewhere inside its arc rather than filling it, and for several nakshatras that identification is itself disputed.