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(2020 HE7)
Classification: Aten [NEO]          SPK-ID: 54016778
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1712353843591808 0.00023627  
a .872108786486867 0.00015834 au
q .7227729032297695 0.00033727 au
i 3.689908385131764 0.0062679 deg
node 214.7711236149019 0.0010919 deg
peri 184.2946779156421 0.0078273 deg
M 218.0283183692129 0.018835 deg
tp 2459117.815027203415
(2020-Sep-25.31502720)		 0.047306 TDB
period 297.4777033568009
0.81		 0.081014
0.0002218		 d
yr
n 1.210174732215842 0.00032958 deg/d
Q 1.021444669743964 0.00018545 au
   Orbit Determination Parameters
   # obs. used (total)      24  
   data-arc span      3 days  
   first obs. used      2020-04-26  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .60888  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Apr-29 06:54:11  

Additional Information
 Earth MOID = .0146901 au 
 Jupiter MOID = 4.20891 au 
 T_jup = 6.771 
[ 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 28.767   .32917 2 autocmod 2.8

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