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(2020 KE4)
Classification: Apollo [NEO]          SPK-ID: 54017215
[ 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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4900137278928463 0.0001622  
a 1.880954876742936 0.0005702 au
q .9592611655919008 1.43e-05 au
i 4.584616565346475 0.0011686 deg
node 241.0310859924583 0.00056793 deg
peri 43.61492662751878 0.0010126 deg
M 348.7406475096166 0.0056045 deg
tp 2459029.969780926508
(2020-Jun-29.46978093)		 0.001269 TDB
period 942.249666897279
2.58		 0.42846
0.001173		 d
yr
n .3820643430795142 0.00017373 deg/d
Q 2.802648587893971 0.00084961 au
   Orbit Determination Parameters
   # obs. used (total)      30  
   data-arc span      23 days  
   first obs. used      2020-05-11  
   last obs. used      2020-06-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      6  
   norm. resid. RMS      .40121  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-04 06:06:10  

Additional Information
 Earth MOID = .013477 au 
 Jupiter MOID = 2.39131 au 
 T_jup = 3.811 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458989.5 (2020-May-20.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4894168590714678 0.00016251  
q .9592734526325261 1.4308e-05 au
tp 2459029.988525168682
(2020-Jun-29.48852517)		 0.0012854 TDB
node 241.0351581663544 0.0005712 deg
peri 43.62510722696441 0.0010026 deg
i 4.587955345604225 0.0011667 deg
   Orbit Determination Parameters
   # obs. used (total)      30  
   data-arc span      23 days  
   first obs. used      2020-05-11  
   last obs. used      2020-06-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      6  
   norm. resid. RMS      .40121  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-04 06:06:10  

Additional Information
 Jupiter MOID = 2.39131 au 
 T_jup = 3.811 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.640887184880075E-8 -2.324979907578994E-9 -2.088074253645901E-7 -9.279623219010862E-8 1.627149257005418E-7 1.895823967365497E-7
q -2.324979907578994E-9 2.047148465553519E-10 1.837729489157621E-8 8.170296078554254E-9 -1.433326197062065E-8 -1.66916088916495E-8
tp -2.088074253645901E-7 1.837729489157621E-8 1.652190779329945E-6 7.335346798402346E-7 -1.284806803874285E-6 -1.498685567098933E-6
node -9.279623219010862E-8 8.170296078554254E-9 7.335346798402346E-7 3.262649931685657E-7 -5.72162399520121E-7 -6.6625457381737E-7
peri 1.627149257005418E-7 -1.433326197062065E-8 -1.284806803874285E-6 -5.72162399520121E-7 1.005191615423298E-6 1.168534728413303E-6
i 1.895823967365497E-7 -1.66916088916495E-8 -1.498685567098933E-6 -6.6625457381737E-7 1.168534728413303E-6 1.361201767841241E-6

[ 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 25.129   .52728 3 autocmod 2.8

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