The Raven darkness. The use of the raven—the "devil bird"—also suggests this. This devil image is emphasized by the narrator's belief that the raven is "from the Night's Plutonian shore", or a messenger from the afterlife, referring to Pluto, the Roman god of the underworld (also known as Dis Pater in Roman mythology). A direct allusion to Satan also appears: "Whether Tempter sent, or whether tempest tossed thee here ashore..." Poe chose a raven as the central symbol in the story because he wanted a "non-reasoning" creature capable of speech. He decided on a raven, which he considered "equally capable of speech"
90482 Orcus of death, and frequently acted as a guide of the deceased to the underworld. The absolute magnitude of Orcus is approximately 2.3 (comparable with the 2.6 of cubewano 50000 Quaoar). The detection of Orcus by the Spitzer Space Telescope in the far infrared and by Herschel Space Telescope in submillimeter constrains its diameter to . Orcus appears to have an albedo of about 21% to 25%, which may be typical of trans-Neptunian objects approaching the 1000 km diameter range. In the magnitude and size estimates reported above it was assumed that Orcus is a singular object. The presence of a