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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 2459263.5 (2021-Feb-18.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7593832746114362 0.001347  
a 1.38677027808862 0.0046902 au
q .3336801231798718 0.00073947 au
i 4.751225077869697 0.01488 deg
node 337.2938617526382 0.00018042 deg
peri 304.031360725465 0.010984 deg
M 326.2644524925137 0.21375 deg
tp 2459319.397254422545
(2021-Apr-14.89725442)
0.070585 TDB
period 596.4928118522656
1.63
3.0261
0.008285
d
yr
n .6035278092993379 0.0030618 deg/d
Q 2.439860432997368 0.0082519 au
  Orbit Determination Parameters
   # obs. used (total)      39  
   data-arc span      9 days  
   first obs. used      2021-02-16  
   last obs. used      2021-02-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      8  
   norm. resid. RMS      .54468  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-26 05:18:53  

Additional Information
 Earth MOID = .00226918 au 
 Jupiter MOID = 2.75057 au 
 T_jup = 4.422 
[ 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 24.23   .26605 E2021-DA1 autocmod 2.8

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