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14827 Hypnos (1986 JK)
Classification: Apollo [NEO, PHA]          SPK-ID: 2014827
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 47 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6655943947974937 3.773e-08  
a 2.842172206463956 7.1022e-08 AU
q .9504383167923219 9.3082e-08 AU
i 1.980772784705084 1.6261e-05 deg
node 57.97912408593213 0.00020306 deg
peri 238.1238903035618 0.00020769 deg
M 319.7765861226221 5.3959e-05 deg
tp 2456996.046675110241
(2014-Dec-04.54667511)
0.00026961 JED
period 1750.144909487129
4.79
6.5601e-05
1.796e-07
d
yr
n .205697252866619 7.7102e-09 deg/d
Q 4.733906096135591 1.1829e-07 AU
  Orbit Determination Parameters
   # obs. used (total)      180  
   # delay obs. used      0  
   # Doppler obs. used      10  
   data-arc span      5288 days (14.48 yr)  
   first obs. used      1986-05-04  
   last obs. used      2000-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .61447  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 21:01:57  

Additional Information
 Earth MOID = .0148526 AU 
 T_jup = 2.933 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 18.3 mag n/a PDS3 (MPO 12)  
diameter diameter 0.9 km n/a Hazards due to Comets and Asteroids (1994), Ed. T. Gehrels, pp.540-543 based on assumed dark albedo (0.06)
B-V BV .684 mag .020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=1; phase=4.74 deg.
U-B UB .492 mag .039 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=1; phase=4.74 deg.

14827 Hypnos           Discovered 1986 May 5 by C. S. Shoemaker and E. M. Shoemaker at Palomar.
Hypnos was the Greek god of sleep and twin brother of death. He entered the sleep of mortals and gave them, at the bidding of the Olympians, dreams of foolishness or inspiration, depending on the individual and their divine protectors or enemies.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030106/MPCPages.arcLast Updated: 2003-10-02

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Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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