New Light on the Relationship between the Montecitorio Obelisk and Ara Pacis of Augustus

The article takes as its point of departure recent work (Frischer forthcoming) critiquing the theory of Edmund Buchner about the relationship of the gnomonical instrument known as the Horologium Augusti and the Ara Pacis Augustae. As a result of this critique, the Montecitorio Obelisk could be situated with greater precision on the map of the city. A computer simulation showed that Buchner erred in positing that the shadow of the Montecitorio Obelisk went into the center of the Ara Pacis on Augustus’ birthday. In this article, computer simulations are used to develop a post-Buchnerian interpretation of the relationship of the obelisk and altar. Over 230 hitherto unrecognized solar and shadow alignments are reported. The first part of the article defines four zones around the monuments where the solar and shadows observations were made. In the second part of the article, specialists interpret the significance of the annual solar and shadow spectacle from various points of view. The conclusion synthesizes the results, arguing that the monuments were intentionally aligned and situated in order to propagate the same message as the one inscribed on two sides of the Montecitorio Obelisk [CIL 6.702 = ILS 91]: that Augustus was a devoted worshipper of the sun god (Sol), who brings Rome victory in war, peace, and prosperity through his earthly representative, the emperor.


Publication Date:
May 24 2017
Date Submitted:
Aug 10 2018
Pagination:
18-122
ISSN:
2574-1748
Citation:
Studies in Digital Heritage
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Note:
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 Record created 2018-08-10, last modified 2019-04-03


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