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(2020 TW4)
Classification: Apollo [NEO]          SPK-ID: 54062085
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 2459137.5 (2020-Oct-15.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5570715589686233 0.00094514  
a 2.277244201991277 0.0048922 au
q 1.008656224235738 1.4574e-05 au
i 7.134983286960769 0.0085135 deg
node 202.6378175270193 0.00036736 deg
peri 171.2003018445028 0.0042426 deg
M 1.918950536085408 0.0057552 deg
tp 2459130.809260612879
(2020-Oct-08.30926061)
0.0015023 TDB
period 1255.19972196738
3.44
4.0448
0.01107
d
yr
n .2868069468942693 0.00092422 deg/d
Q 3.545832179746816 0.0076175 au
  Orbit Determination Parameters
   # obs. used (total)      31  
   data-arc span      5 days  
   first obs. used      2020-10-13  
   last obs. used      2020-10-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      8  
   norm. resid. RMS      .29987  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-19 08:21:31  

Additional Information
 Earth MOID = .0142503 au 
 Jupiter MOID = 1.92638 au 
 T_jup = 3.375 
[ 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 27.152   .328 4 autocmod 2.8

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