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JPL Small-Body Database Browser
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(2021 KE1)
Classification: Apollo [NEO]          SPK-ID: 54147129
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 2459354.5 (2021-May-20.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3162930553003721 0.00096915  
a 1.477214549604714 0.0020845 au
q 1.009981846376076 6.4561e-06 au
i 3.273389001267133 0.0073072 deg
node 84.7012750746955 0.0073299 deg
peri 195.068099134393 0.0022477 deg
M 339.4581339415326 0.047459 deg
tp 2459391.919776048937
(2021-Jun-26.41977605)
0.0072501 TDB
period 655.788492597268
1.80
1.3881
0.0038
d
yr
n .5489574825782781 0.001162 deg/d
Q 1.944447252833352 0.0027438 au
  Orbit Determination Parameters
   # obs. used (total)      26  
   data-arc span      18 days  
   first obs. used      2021-05-18  
   last obs. used      2021-06-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      8  
   norm. resid. RMS      .58067  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jun-05 05:49:33  

Additional Information
 Earth MOID = .0018378 au 
 Jupiter MOID = 3.19462 au 
 T_jup = 4.532 
[ 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 26.65   .49703 E2021N14 autocmod 2.9c

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