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(2021 EQ4)
Classification: Apollo [NEO]          SPK-ID: 54131585
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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5730522672706531 0.00041933  
a 1.373985175523363 0.00096793 au
q .5866198554934334 0.00016291 au
i 14.19951734581128 0.011109 deg
node 357.2237066646008 0.00018247 deg
peri 280.0609846457743 0.0044693 deg
M 30.17175407699912 0.019606 deg
tp 2459347.197430294580
(2021-May-12.69743029)
0.02006 TDB
period 588.2629511249351
1.61
0.62162
0.001702
d
yr
n .611971227002435 0.00064667 deg/d
Q 2.161350495553292 0.0015226 au
  Orbit Determination Parameters
   # obs. used (total)      45  
   data-arc span      4 days  
   first obs. used      2021-03-15  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .41305  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:26:42  

Additional Information
 Earth MOID = .0109462 au 
 Jupiter MOID = 3.10481 au 
 T_jup = 4.604 
[ 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 26.16   .3506 MPO606244 autocmod 2.9c

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