14827 Hypnos

14827 Hypnos
Discovery
Discovered byC. S. Shoemaker
E. M. Shoemaker
Discovery sitePalomar Obs.
Discovery date5 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 arc19.32 yr (7,058 days)
Aphelion4.7318 AU
Perihelion0.9491 AU
2.8405 AU
Eccentricity0.6659
4.79 yr (1,749 days)
206.81°
0° 12m 21.24s / day
Inclination1.9808°
57.976°
238.09°
Earth MOID0.0147 AU · 5.7 LD
Jupiter MOID0.5249 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.