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(2021 AE4)
Classification: Apollo [NEO, PHA]          SPK-ID: 54105102
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 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1627888705656746 2.84e-05  
a 1.16029518439329 4.2898e-05 au
q .9714120418031156 3.8973e-06 au
i 15.7671260422666 0.0022061 deg
node 49.58986370195422 0.0022029 deg
peri 172.5031849162906 0.0027579 deg
M 252.9876759656759 0.0059153 deg
tp 2459336.200815226507
(2021-May-01.70081523)
0.00023826 TDB
period 456.5109105178693
1.25
0.025317
6.931e-05
d
yr
n .7885901337858791 4.3733e-05 deg/d
Q 1.349178326983465 4.9881e-05 au
  Orbit Determination Parameters
   # obs. used (total)      29  
   data-arc span      51 days  
   first obs. used      2021-01-06  
   last obs. used      2021-02-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      6  
   norm. resid. RMS      .344  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-27 05:51:10  

Additional Information
 Earth MOID = .03855 au 
 Jupiter MOID = 3.62401 au 
 T_jup = 5.381 
[ 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 21.83   .32021 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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