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(2020 DA4)
Classification: Apollo [NEO]          SPK-ID: 54005703
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 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .431084050361952 0.0002194  
a 1.616218324160704 0.00056997 au
q .9194923827123014 3.0327e-05 au
i .8689746870426392 0.00018286 deg
node 184.9003963117073 0.0052016 deg
peri 19.8480543093676 0.0037382 deg
M 122.6382712941128 0.063828 deg
tp 2458944.834583433574
(2020-Apr-05.33458343)
0.0021825 TDB
period 750.496146045493
2.05
0.397
0.001087
d
yr
n .4796826764493176 0.00025375 deg/d
Q 2.312944265609106 0.00081568 au
  Orbit Determination Parameters
   # obs. used (total)      132  
   data-arc span      6 days  
   first obs. used      2020-02-27  
   last obs. used      2020-03-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .36105  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 22:20:06  

Additional Information
 Earth MOID = .00539176 au 
 Jupiter MOID = 2.64552 au 
 T_jup = 4.225 
[ 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 25.7   .42167 4 autocmod 2.9c

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