The Behenian fixed stars are a selection of fifteen stars considered especially useful for magical applications in the medievalastrology of Europe and the Arab world. Their name derives from the Arabic bahman, "root," as each was considered a source of astrological power for one or more planets. Each is also connected with a gemstone and plant that would be used in rituals meant to draw the star's influence (e.g., into a talisman). When a planet was within six degrees of an associated star, this influence was thought to be particularly strong.
The following table uses symbols from a 1531 quarto edition of Agrippa, but other forms exist. Where the name used in old texts differs from the one in use today, the modern form is given first.
^These locations are given in celestial longitude, the relatively fixed reference frame of tropical signs used in astrology. Due to the precession of the equinoxes the fixed stars appear to precess through space at the rate of ~1 degree of arc per 72 years. In order to fix the measurement to a specific date and degree of arc the values published are utilized for the year 2020. All celestial bodies, including stars and constellations, are measured according to various fixed frameworks, in this instance a geocentric tropical zodiac. Cf. Heliocentric model as a fixed framework and sidereal and tropical astrology to identify the measuring system used here. For example, "26 Taurus 10" means 26 degrees 10 minutes of the tropical sign Taurus. See ecliptic coordinate system for further information.
