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(2021 EZ4)
Classification: Apollo [NEO]          SPK-ID: 54131591
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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1059234226222519 7.3049e-05  
a 1.130861940174282 9.2181e-05 au
q 1.011077172957781 4.5397e-07 au
i 3.092887261568788 0.0019347 deg
node 2.637390626747285 0.002466 deg
peri 247.1743907365298 0.00020059 deg
M 25.86696725504552 0.0048329 deg
tp 2459364.938631842501
(2021-May-30.43863184)
0.0020419 TDB
period 439.2510503713282
1.20
0.053708
0.000147
d
yr
n .8195768677062194 0.00010021 deg/d
Q 1.250646707390782 0.00010195 au
  Orbit Determination Parameters
   # obs. used (total)      50  
   data-arc span      35 days  
   first obs. used      2021-03-15  
   last obs. used      2021-04-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      6  
   norm. resid. RMS      .4458  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-20 06:21:56  

Additional Information
 Earth MOID = .0372317 au 
 Jupiter MOID = 3.7448 au 
 T_jup = 5.527 
[ 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 26.15   .46998 E2021-HA0 autocmod 2.9c

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