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(2020 HW3)
Classification: Apollo [NEO]          SPK-ID: 54016676
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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5460684160722816 5.8874e-07  
a 1.154946581729519 2.7519e-06 au
q .5242667311963846 9.4114e-07 au
i 45.72915593266311 7.5387e-05 deg
node 213.9144328661188 3.7636e-06 deg
peri 114.808658682326 0.00018181 deg
M 139.9451066034399 0.00045437 deg
tp 2459024.263244001243
(2020-Jun-23.76324400)
6.1922e-05 TDB
period 453.3579894246399
1.24
0.0016203
4.436e-06
d
yr
n .7940744585903929 2.838e-06 deg/d
Q 1.785626432262653 4.2546e-06 au
  Orbit Determination Parameters
   # obs. used (total)      163  
   # delay obs. used      1  
   # Doppler obs. used      2  
   data-arc span      7 days  
   first obs. used      2020-04-20  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      4  
   norm. resid. RMS      .34788  
   source      ORB  
   producer      Giorgini  
   solution date      2020-May-02 21:15:18  

Additional Information
 Earth MOID = .0326038 au 
 Jupiter MOID = 4.12656 au 
 T_jup = 5.056 
[ 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 22.1   .39126 E2020-HL1 autocmod 2.8

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