Hadrian was devastated by the death of Antinous, and possibly also experiencing remorse. In Egypt, the local priesthood immediately deified Antinous by identifying him with Osiris due to the manner of his death. In keeping with Egyptian custom, Antinous's body was probably embalmed and mummified by priests, a lengthy process which might explain why Hadrian remained in Egypt until spring 131. While there, in October 130 Hadrian proclaimed Antinous to be a deity and announced that a city should be built on the site of his death in commemoration of him, to be called Antinoöpolis. The deification of human beings was not uncommon in the Classical world. However, the public and formal divinisation of humans was reserved for the Emperor and members of the imperial family; thus Hadrian's decision to declare Antinous a god and create a formal cult devoted to him was highly unusual, and he did so without the permission of the Senate. Although the cult of Antinous therefore had connections with the imperial cult, it remained separate and distinct. Hadrian also identified a star in the sky between the Eagle and the Zodiac to be Antinous, and came to associate the rosy lotus that grew on the banks of the Nile as being the flower of Antinous.