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(2021 DO)
Classification: Apollo [NEO]          SPK-ID: 54123258
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 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4018412502430044 0.00026086  
a 1.655958224381768 0.00072249 au
q .9905259011460126 8.0227e-07 au
i 10.92483230687747 0.0051605 deg
node 330.0292110422812 1.6336e-05 deg
peri 199.2458542087097 0.00136 deg
M 322.9375387331702 0.024422 deg
tp 2459280.631679920157
(2021-Mar-07.13167992)
0.00055181 TDB
period 778.3456301935959
2.13
0.50939
0.001395
d
yr
n .462519459267033 0.0003027 deg/d
Q 2.321390547617523 0.0010128 au
  Orbit Determination Parameters
   # obs. used (total)      52  
   data-arc span      4 days  
   first obs. used      2021-02-17  
   last obs. used      2021-02-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .51028  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:26:05  

Additional Information
 Earth MOID = .0157035 au 
 Jupiter MOID = 2.66635 au 
 T_jup = 4.157 
[ 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 26.71   .36298 E2021D74 autocmod 2.8

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