kakkabū minâti

Definition

Kakkabū minâti (Akkadian; Sumerogram MUL.ŠID.MEŠ; literally "counting stars" or "stars of the number") is the Babylonian technical term for the band of roughly thirty-four ecliptic-adjacent reference stars that late Babylonian observers used to record the positions of the Moon and planets. The modern term "Normal Star" derives from Epping's German Normalsterne (1889). The stars lie within a narrow latitude band around the ecliptic (approximately +10° to −7;30°), and distances from a normal star are measured in cubits (kùš = ammatu) and fingers (šu.si = ubānu), with 12 fingers = 1°.

In Tradition

Rochberg treats kakkabū minâti as the foundational positional-reference system of late Babylonian observational astronomy, supplying the empirical substrate from which the mathematical astronomy of System A and System B was developed. The set is best attested in the Astronomical Diaries, in the dedicated Normal Star Almanacs derived from them, and in the Babylonian Horoscopes corpus, where the moon's birth-date position is fixed against a named normal star by a stated cubits-and-fingers offset.

In Practice

For the student of late Babylonian positional astronomy, kakkabū minâti names the apparatus that makes precise lunar and planetary recording possible without a geometric celestial-sphere model. Rochberg edits horoscope texts in which the lunar position is anchored to a named normal star: Text 13 places the moon below "the bright star of the Furrow" (α Virginis); Text 14 below "the rear star of the head of the Hired Man" (α Arietis); Text 15 west of "the southern star of the Chariot" (ζ Tauri); Text 18 west of "the northern star of the Chariot" (β Tauri). Sachs and Hunger list the thirty-two most common normal stars in their *Astronomical Diaries* edition; in the extant horoscope corpus only nine appear, used exclusively for the Moon. The system's purely arithmetical character — distances stated in cubits and fingers rather than degrees of ecliptic longitude — is one of the technical features that distinguishes Babylonian observational astronomy from its Greek descendants.

Historical Origin

Attested as a systematic positional-reference apparatus from the mid-first-millennium BCE through the Hellenistic period in the Astronomical Diaries (recovered from Diary -652 onward), the Normal Star Almanacs, and the Babylonian Horoscopes corpus (~410 BCE to ~50 BCE). Modern term "Normal Star" coined by Joseph Epping in *Astronomisches aus Babylon* (1889). Modern critical treatments: Rochberg, *Babylonian Horoscopes* (1998), Ch. 3 §1.3 p. 31; Rochberg, *The Heavenly Writing* (2004), pp. 155-156; Sachs & Hunger, *Astronomical Diaries and Related Texts from Babylonia* (1988-1996).

Further Reading

• Francesca Rochberg, The Heavenly Writing: Divination, Horoscopy, and Astronomy in Mesopotamian Culture
• Abraham Sachs & Hermann Hunger, Astronomical Diaries and Related Texts from Babylonia