14827 Hypnos

14827 Hypnos
Discovery[1]
Discovered byC. S. Shoemaker
E. M. Shoemaker
Discovery sitePalomar Obs.
Discovery date5 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 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[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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  4. ^ a b c Cite error: The named reference Trilling-2016 was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference Radar-albedo was invoked but never defined (see the help page).
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  7. ^ Cite error: The named reference Wisniewski-1987b was invoked but never defined (see the help page).