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(2021 DE)
Classification: Apollo [NEO]          SPK-ID: 54122968
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 2459264.5 (2021-Feb-19.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7590922040432851 0.0011226  
a 1.385758542577814 0.0038988 au
q .3338400362206105 0.00061644 au
i 4.747989376902768 0.012402 deg
node 337.2938640815294 0.00015452 deg
peri 304.0289300306319 0.0091654 deg
M 326.8225306727327 0.17557 deg
tp 2459319.412413125393
(2021-Apr-14.91241313)
0.058839 TDB
period 595.8401627966995
1.63
2.5146
0.006885
d
yr
n .6041888789608698 0.0025498 deg/d
Q 2.437677048935017 0.0068583 au
  Orbit Determination Parameters
   # obs. used (total)      73  
   data-arc span      11 days  
   first obs. used      2021-02-16  
   last obs. used      2021-02-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      8  
   norm. resid. RMS      .42999  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:26:04  

Additional Information
 Earth MOID = .00226773 au 
 Jupiter MOID = 2.75269 au 
 T_jup = 4.424 
[ 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 24.37   .26605 MPO606207 autocmod 2.8

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