IGI.GUB
igigubbû

Akkadian noun

Last edited: 2023-06-26
Primary meaning igigubbû-coefficient
Literal translation ?
Variants
IGI.GUB-u₂ igigubbû
Edited by
igigubbû-coefficient astronomical quantity

[KI.MEŠ] ana igi-gub-u₂ IGI ša₂ KUR DU₃-uš

‘You construct [the positions] for the igigubbû-coefficients of the eastern appearance (of Venus).’

— BM 34221 (BMAPT No. 46) rev. ii 6

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

Ossendrijver, M. 2012. Babylonian Mathematical Astronomy: Procedure Texts. New York: Springer. 328-329

In this example igigubbû stands for the longitudinal distance from MF to MS (Venus) which must be added to the longitude of MF in order to obtain that of MS.

(1) ina 18 MU.MEŠ 2.⸢47⸣.23? UŠ sin LA₂ (2) mim-ma ša₂ al 1.57.47.57.46.40 DIRI A.RA₂ (3) 10.05.20 DU-ma KI 11.36 ZI TAB IGI.GUB-šu₂ (4) GIŠ-ma ⸢A⸣.RA₂ 2.47.22 DU A.RA₂ 6 DU-ma (5) ⸢TA⸣ 3.⸢16⸣.21 E₁₁-ma si-man ša₂ GI₆-ka LA₂ (6) 1 U₄ 20? ZI ⸢ME NIM?⸣.A GI₆ DU TAB

‘(1) In 18 years Sin lacks(?) 2.47.23? . (2) Whatever (the amount) by which it exceeds 1,57;47,57,46,40: (3) you multiply it by (0);10,5,20 and add it with 11;36, the displacement. (4) You compute its igigubbû-coefficient, and you multiply it by 2.47.22, you multiply it by 6, and (5) you deduct it from 3.16.21, and you subtract the duration of your night, (6) 1 day of the Sun? you subtract; the time since sunrise , (the time by which) the night has progressed, you add.’

— BM 36744+ (BMAPT No. 92) obv. 1-6

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

Ossendrijver, M. 2012. Babylonian Mathematical Astronomy: Procedure Texts. New York: Springer 490

The meaning of igigubbû in this example is unclear.
Cite this entry
APA (7th)
Ossendrijver, M. (2023). IGI.GUB (Lemma #699). The ZODIAC Glossary: A Cross-Cultural Glossary of Ancient Astral Science. https://zodiacglossary.github.io/lemma/699/
Chicago (Author-Date)
Ossendrijver, M. (2023). IGI.GUB (Lemma #699). The ZODIAC Glossary: A Cross-Cultural Glossary of Ancient Astral Science. https://zodiacglossary.github.io/lemma/699/
MLA (9th)
Ossendrijver, M. (2023). IGI.GUB (Lemma #699). The ZODIAC Glossary: A Cross-Cultural Glossary of Ancient Astral Science. https://zodiacglossary.github.io/lemma/699/
Harvard
Ossendrijver, M. (2023) IGI.GUB (Lemma #699), The ZODIAC Glossary: A Cross-Cultural Glossary of Ancient Astral Science. Available at: https://zodiacglossary.github.io/lemma/699/ (Accessed: February 2, 2026).
BibTeX 
@misc{zodiac699,
	note = {[Online; accessed 2026-02-02]},
	author = {Ossendrijver, Mathieu},
	year = {2023},
	title = {IGI.{GUB} ({Lemma} #699)},
	url = {https://zodiacglossary.github.io/lemma/699/},
	howpublished = {https://zodiacglossary.github.io/lemma/699/},
}