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(2021 DO)
Classification: Apollo [NEO]          SPK-ID: 54123258
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ hide orbit diagram ]

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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4018498614321445 0.00026089  
a 1.65576908134707 0.00072221 au
q .9903985054441209 7.7949e-07 au
i 10.92486322089374 0.0051608 deg
node 330.0316962549933 1.6755e-05 deg
peri 199.2580513998936 0.0013627 deg
M 230.4061971783848 0.084963 deg
tp 2459280.643024501151
(2021-Mar-07.14302450)
0.00056217 TDB
period 778.2122804069222
2.13
0.50916
0.001394
d
yr
n .4625987138262048 0.00030266 deg/d
Q 2.32113965725002 0.0010124 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.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .51028  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-21 05:18:10  

Additional Information
 Earth MOID = .0157333 au 
 Jupiter MOID = 2.66748 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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