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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1708745361531786 0.00023761  
a .8723122692253549 0.00015872 au
q .7232563148407457 0.00033887 au
i 3.683664554486592 0.0062837 deg
node 214.645116615832 0.0016372 deg
peri 184.3862903504635 0.0082052 deg
M 99.99824593613171 0.084575 deg
tp 2459117.839832753855
(2020-Sep-25.33983275)
0.047382 TDB
period 297.5818218613371
0.81
0.081221
0.0002224
d
yr
n 1.209751313935256 0.00033019 deg/d
Q 1.021368223609964 0.00018585 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 = .0136615 au 
 Jupiter MOID = 4.20769 au 
 T_jup = 6.770 
[ 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 28.8   .32917 E2020-HM9 autocmod 2.8

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