Discovery[1] | |
---|---|
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[2] (Greek god of sleep) |
1986 JK | |
Apollo · NEO · PHA[1][3] | |
Orbital characteristics[1] | |
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[4] >0.74 km[5] 0.9 km (Gehrels 1994)[1] 0.907 km (derived)[6] | |
0.057 (assumed)[6] <0.067 (radar)[5] 0.22±0.17[4] | |
C[5][6] B–V = 0.684[1] U–B = 0.492[1] | |
18.3[1] · 18.65±0.22[4] · 18.94[6][7] | |
14827 Hypnos (prov. 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.[3] It was named after Hypnos, the Greek god of sleep.[2]
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