Eclipse Records

Definition

Eclipse Records are a Late Babylonian cuneiform text-class — a subgenre of Brown's NMAAT (Non-Mathematical Astronomical and Astrological Texts) — that compile observed and predicted solar and lunar eclipses into tables arranged by characteristic recurrence periods. The principal series is the Saros Canon (LBAT 1413-1420+), covering eclipse-possibilities from approximately 747 BCE into the Hellenistic period. The Records are distinct from the Enūma Anu Enlil eclipse-omen genre (which interprets eclipses divinatorily) and from the ACT mathematical-astronomy procedure-texts (which compute eclipses from parameters).

In Tradition

Brown argues that the systematic Eclipse Records corpus is the principal evidence for the establishment of the PCP-Paradigm prediction infrastructure by the eighth century BCE: knowledge of the Saros (223-month) and other lunar-eclipse periods is documented by the arrangement-by-period of the LBAT 1413 onward tablets. The Eclipse Records supply, alongside the Astronomical Diaries and Planet Records, the empirical baseline for the long-period parameters used in System A and System B lunar theory.

In Practice

For the student of how Babylonian mathematical astronomy was built on observational records rather than abstract theory, the Eclipse Records illustrate the progressive refinement of the eclipse-data column over four centuries. LBAT 1413 (earliest entries ~747 BCE) records only date, watch of night, and one sunrise-anchored time. LBAT 1414-1419 (seventh century BCE) add eclipse extent (magnitude in fingers), whether the moon rose or set still eclipsed, shadow direction, eclipse duration (from 632 BCE), and the moon's location beside named stars. LBAT 1420 (from 603 BCE) refines the time to the nearest 5 UŠ and adds shadow-direction and total duration. By the sixth century BCE the format is fixed: date, time-to-5-UŠ, phase-lengths to the nearest UŠ, shadow-direction, location. The final innovation, first in LBAT 1436 (194 BCE), references eclipse time to a culminating ziqpu star. Brown reads the "1,40" and "1,50" headings of LBAT 1413 i and 1414 i as Saros-excess parameters: eclipse-period knowledge by the eighth century BCE.

Historical Origin

Earliest entries date to ~747 BCE in LBAT 1413; the Saros-Canon series continues through the Hellenistic period, with the latest dated entry in LBAT 1436 (194 BCE). Modern critical treatments: Brown, *Mesopotamian Planetary Astronomy-Astrology* (2000), Introduction p. 4 (LBAT 1417 example) and §4.2.1 pp. 200-201 + §4.2.4.3 p. 215 (Saros-Canon analysis); cf. Hunger & Pingree, *Astral Sciences in Mesopotamia* (1999), Ch. II §B.5.

Further Reading

• David Brown, Mesopotamian Planetary Astronomy-Astrology
• Hermann Hunger & David Pingree, Astral Sciences in Mesopotamia