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(2020 RD4)
Classification: Aten [NEO]          SPK-ID: 54053939
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 .3448078729454767 0.00024678  
a .964320999827609 5.4853e-05 au
q .6318155270403958 0.00020207 au
i 2.535178101437457 0.0022076 deg
node 352.2634547814284 7.7337e-05 deg
peri 116.6816315040395 0.00078594 deg
M 171.1788612422843 0.039311 deg
tp 2458836.033104139742
(2019-Dec-18.53310414)
0.051801 TDB
period 345.8843111819199
0.95
0.029512
8.08e-05
d
yr
n 1.04081043389868 8.8806e-05 deg/d
Q 1.296826472614822 7.3767e-05 au
  Orbit Determination Parameters
   # obs. used (total)      27  
   data-arc span      2 days  
   first obs. used      2020-09-12  
   last obs. used      2020-09-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      6  
   norm. resid. RMS      .3025  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Sep-14 06:56:03  

Additional Information
 Earth MOID = 3.74386E-5 au 
 Jupiter MOID = 3.81693 au 
 T_jup = 6.203 
[ 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 29.795   .21853 2 autocmod 2.8

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