14827 Hypnos
| Discovery | |
|---|---|
| Discovered by | C. S. Shoemaker E. M. Shoemaker |
| Discovery site | Palomar Obs. |
| Discovery date | 5 May 1986 |
| Designations | |
| (14827) Hypnos | |
| Pronunciation | /ˈhɪpnɒs/ |
Named after | Hypnos (Greek god of sleep) |
| 1986 JK | |
| Apollo · NEO · PHA | |
| Orbital characteristics | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 19.32 yr (7,058 days) |
| Aphelion | 4.7318 AU |
| Perihelion | 0.9491 AU |
| 2.8405 AU | |
| Eccentricity | 0.6659 |
| 4.79 yr (1,749 days) | |
| 206.81° | |
| 0° 12m 21.24s / day | |
| Inclination | 1.9808° |
| 57.976° | |
| 238.09° | |
| Earth MOID | 0.0147 AU · 5.7 LD |
| Jupiter MOID | 0.5249 AU |
| Physical characteristics | |
| 0.520±0.260 km >0.74 km 0.9 km (Gehrels 1994) 0.907 km (derived) | |
| 0.057 (assumed) <0.067 (radar) 0.22±0.17 | |
| C B–V = 0.684 U–B = 0.492 | |
| 18.3 · 18.65±0.22 · 18.94 | |
14827 Hypnos (provisional designation: 1986 JK) 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.