BAR.NUN
ṣiliptu

Akkadian noun

Last edited: 2023-06-26
Primary meaning ṣiliptu-coefficient
Literal translation diagonal
Variants
BAR.NUN ṣiliptu
Edited by
diagonal mathematical quantity

in mathematical texts

ṣiliptu-coefficient astronomical quantity

in mathematical astronomy

(6) KI sin NIM KI sin u KI šamaš₂ ša₂ al-la 10 lu-maš DIRI GAM0 16 DU KI BAR.NUN ša₂ l[u-maš] (7) ša₂-šu₂ ki TAB TAB ki LA₂ LA₂ ana muḫ-ḫi a-ḫa-miš₂ GAR.GAR-ma ½-šu₂-nu GIŠ-ma ana BAR.NUN ⸢GAR⸣-[an]

‘(6) The position of the Moon and the position of the Sun: (the amount) by which they exceed 10 of the zodiacal sign you multiply by (0;0),16. You add it with the corresponding ṣiliptu-coefficient for the zod[iac] if it is increasing, subtract if it is decreasing. You accumulate (them) together, compute half of it and put it down as the ṣiliptu-coefficient.’

— BM 35399 (BMAPT No. 61A) obv. 6-7

Genre: mathematical astronomy: procedure text
Provenance: Babylon
Date: ca. 350-50 BCE

Ossendrijver, M. 2012. Babylonian Mathematical Astronomy: Procedure Texts. New York: Springer. 397-398

Cite this entry
APA (7th)
Ossendrijver, M. (2023). BAR.NUN (Lemma #274). The ZODIAC Glossary: A Cross-Cultural Glossary of Ancient Astral Science. https://zodiacglossary.github.io/lemma/274/
Chicago (Author-Date)
Ossendrijver, M. (2023). BAR.NUN (Lemma #274). The ZODIAC Glossary: A Cross-Cultural Glossary of Ancient Astral Science. https://zodiacglossary.github.io/lemma/274/
MLA (9th)
Ossendrijver, M. (2023). BAR.NUN (Lemma #274). The ZODIAC Glossary: A Cross-Cultural Glossary of Ancient Astral Science. https://zodiacglossary.github.io/lemma/274/
Harvard
Ossendrijver, M. (2023) BAR.NUN (Lemma #274), The ZODIAC Glossary: A Cross-Cultural Glossary of Ancient Astral Science. Available at: https://zodiacglossary.github.io/lemma/274/ (Accessed: February 2, 2026).
BibTeX 
@misc{zodiac274,
	note = {[Online; accessed 2026-02-02]},
	author = {Ossendrijver, Mathieu},
	year = {2023},
	title = {BAR.{NUN} ({Lemma} #274)},
	url = {https://zodiacglossary.github.io/lemma/274/},
	howpublished = {https://zodiacglossary.github.io/lemma/274/},
}