14827 Hypnos 14827 Hypnos 14827 Hypnos, provisional designation , is a highly eccentric, sub-kilometer-sized carbonaceous asteroid that is thought to be an extinct comet. It is classified as near-Earth object and potentially hazardous asteroid of the Apollo group. The asteroid was discovered by American astronomer couple Carolyn and Eugene Shoemaker at the Palomar Observatory in California on 5 May 1986. It was named after Hypnos, the Greek god of sleep. "Hypnos" orbits the Sun at a distance of 0.9–4.7 AU once every 4 years and 9 months (1,749 days). Its orbit has a high eccentricity of 0.67 and an inclination of 2°
14827 Hypnos the nucleus of an extinct comet that is covered by a crust several centimeters thick that prevents any remaining volatiles from outgassing. "Hypnos" is an assumed carbonaceous C-type asteroid. As of 2018, no rotational lightcurve of "Hypnos" has been obtained from photometric observations. The asteroids rotation period and spin axis remains unknown. It has a low brightness amplitude of 0.05 magnitude which indicates that the body has a rather spheroidal shape. According to the NEOSurvey carried out by NASA's Spitzer Space Telescope, "Hypnos" measures 520 meters in diameter and its surface has an albedo of 0.22 based on an absolute