Cuneiform Discovery: Venus tablet Ammisaduqa planetary period calculations — E8 Intelligence Research

**The Venus Tablet of Ammisaduqa (Enūma Anu Enlil Tablet 63): A Sexagesimal Ephemeris** The primary sources are the Nineveh library copies **BM 35788 (K.160)**, **K.2321**, **Sm. 35**, and **DT 47** (British Museum), preserving a 21-year observational log (Years 1–21 of Ammiṣaduqa, ca. 1646–1626 BCE middle chronology). The tablet records the *heliacal* phenomena of Venus (Ninsianna/Ishtar): first/last visibility as Morning Star (East) and Evening Star (West), dated by month and day in the Babylonian lunar calendar. **Mathematical Core: The 584-Day Synodic Cycle** The scribes recognized the synodic period as **584 days** (9;44 in sexagesimal days, or 9 days 44/60). This integer approximation drives the entire schema. The text records four visibility/invisibility intervals per cycle summing to 584 days. Standard values inscribed include: * Evening Star visibility: **263 days** (4;23) * Evening Star invisibility (superior conjunction): **50 days** (50) * Morning Star visibility: * Author: Andrew Stewart Caldin, Independent Researcher, UK. Part of the E8 Intelligence Research series. Platform: e8intelligence.com