Hypnos Hypnos In Greek mythology, Hypnos (; , "sleep") is the personification of sleep; the Roman equivalent is known as Somnus. In the Greek mythology, Hypnos is the son of Nyx ("The Night") and Erebus ("The Darkness"). His brother is Thanatos ("Death"). Both siblings live in the underworld ("Hades") or in Erebus, another valley of the Greek underworld. According to rumors, Hypnos lived in a big cave, which the river Lethe ("Forgetfulness") comes from and where night and day meet. His bed is made of ebony, on the entrance of the cave grow a number of poppies and other hypnotic plants.
14827 Hypnos with respect to the ecliptic. It is frequently perturbed by Jupiter. The body's observation arc begins at Anderson Mesa Station the night prior to its official discovery observation at Palomar. As a near-Earth object and potentially hazardous asteroid "Hypnos" has an Earth minimum orbital intersection distance of , which corresponds to 5.7 lunar distances. In 1958, "Hypnos" passed less than 0.03 AU from both Earth and Mars. Neither planet has been approached so closely by "Hypnos" since the 862 AD pass of Earth, or will be until the 2214 pass of Earth. It is also a Mars-crosser. "Hypnos" may be