14827 Hypnos magnitude of 18.65, while infrared radiometry gave a radar albedo of no more than 0.067 and a diameter of at least 740 meters. The "Collaborative Asteroid Lightcurve Link" assumes a standard optical albedo for carbonaceous asteroids 0.057 and derives a diameter of 907 meters with an absolute magnitude of 18.94. The diameter agrees with Tom Gehrels 1994-publication "Hazards due to Comets and Asteroids" in which he estimated a mean-diameter of 900 meters for "Hypnos". This minor planet was named after Hypnos from Greek mythology. He is the god of sleep, son of Nyx and Erebus and twin brother of Thanatos.
The God Beneath the Sea throws Hephaestus for a second time from Olympus. Hephaestus lands on the isle of Lemnos and is nursed to health by the locals. He returns to Olympus and is greeted by Hermes. At the novel's conclusion, Autolycus muses in a letter to his daughter that his grandson Odysseus may one day visit the new city of Troy. Blishen and Garfield began work on "The God Beneath the Sea" after discovering that Greek mythology had had similar impacts on them as primary school children. In Blishen's words, "these stories seemed to illuminate, to make clear, what was going on around me