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(2018 HC)
Classification: Apollo [NEO]          SPK-ID: 3803892
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458227.5 (2018-Apr-19.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .727580760260367 0.0043153  
a 2.917351952551076 0.04336 au
q .7947428009668981 0.00077731 au
i 10.2231051775757 0.056408 deg
node 21.6265707607877 0.0028264 deg
peri 261.7058146640978 0.0038591 deg
M 348.9873138609843 0.25978 deg
tp 2458283.176564210207
(2018-Jun-13.67656421)
0.072111 TDB
period 1820.043072385787
4.98
40.576
0.1111
d
yr
n .1977975166972819 0.0044097 deg/d
Q 5.039961104135254 0.074908 au
  Orbit Determination Parameters
   # obs. used (total)      48  
   data-arc span      9 days  
   first obs. used      2018-04-16  
   last obs. used      2018-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      9  
   norm. resid. RMS      .43378  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-May-13 06:25:10  

Additional Information
 Earth MOID = .0627811 au 
 Jupiter MOID = .903683 au 
 T_jup = 2.795 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 22.8   n/a MPO450738  

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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