Abstract
It was told that the Roman Colonia Marciana Ulpia Traiana Thamugadi (Timgad in Algeria), founded in 100 AD, had been oriented to the sunrise on the day of Trajan’s birthday, given as September 18. This Gregorian date corresponds to September 17 of the Julian Calendar. Here we use software such as CalSKY and Stellarium to investigate the sunrise azimuth and compare it to the direction of the decumanus of the Roman town. After the archaeoastronomical analysis we can conclude that the assertion concerning the orientation of Timgad to the sunrise of the day of Trajan’s birthday could be true.
Highlights
HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not
It was told that the Roman Colonia Marciana Ulpia Traiana Thamugadi (Timgad in Algeria), founded in 100 AD, had been oriented to the sunrise on the day of Trajan’s birthday, given as September 18
The Roman full name was “Colonia Marciana Ulpia Traiana Thamugadi”: in this name we find the names of emperor's mother Marcia, his father Marcus Ulpius Traianus and his eldest sister Ulpia Marciana
Summary
To cite this version: Amelia Carolina Sparavigna. Archaeoastronomical analysis of the Roman Colonia Marciana Ulpia Traiana Thamugadi (Timgad) , founded at the sunrise of Trajan’s Birthday. HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d’enseignement et de recherche français ou étrangers, des laboratoires publics ou privés
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