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Directions of obscuration in Babylonian eclipse records

Gautschy, Rita. (2012) Directions of obscuration in Babylonian eclipse records. Journal for the history of astronomy, Vol. 43, part. 4. pp. 479-489.

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Official URL: http://edoc.unibas.ch/dok/A6070190

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Abstract

This paper evaluates the question in which coordinate system the reported entrance and exit directions of the shadow were given in Babylonian eclipse records. It turns out that the angles were measurend in a simplified ecliptic coordinate system. For the determination of ecliptic position angles it is necessary to know the true northern point of the lunar or solar limb. A method using the distinctive features on the Moon is proposed for determing this true northern point.
Faculties and Departments:04 Faculty of Humanities and Social Sciences > Departement Altertumswissenschaften > Fachbereich Ägyptologie > Ägyptologie (Bickel)
UniBasel Contributors:Gautschy, Rita
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:Science history publications
ISSN:0021-8286
Note:Publication type according to Uni Basel Research Database: Journal article
Last Modified:01 Mar 2013 11:13
Deposited On:01 Mar 2013 11:09

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