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(2017 HE4)
Classification: Apollo [NEO]          SPK-ID: 3774113
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457872.5 (2017-Apr-29.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9427853434261895 0.00021581  
a 2.892573387578344 0.009689 au
q .1654975929848387 6.9917e-05 au
i 41.0700806879245 0.05278 deg
node 208.6401454711271 0.017748 deg
peri 158.9393343386763 0.016873 deg
M 349.1759492939979 0.056515 deg
tp 2457926.527182967860
(2017-Jun-22.02718297)
0.010632 TDB
period 1796.904541258705
4.92
9.0284
0.02472
d
yr
n .200344532352189 0.0010066 deg/d
Q 5.61964918217185 0.018824 au
  Orbit Determination Parameters
   # obs. used (total)      59  
   data-arc span      21 days  
   first obs. used      2017-04-23  
   last obs. used      2017-05-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      8  
   norm. resid. RMS      .44738  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-May-14 06:17:49  

Additional Information
 Earth MOID = .253624 au 
 Jupiter MOID = 1.05544 au 
 T_jup = 2.174 
[ 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 21.2   n/a MPO411588  

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