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(2020 KE4)
Classification: Apollo [NEO]          SPK-ID: 54017215
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.


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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 
[ 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 25.129   .52728 3 autocmod 2.8

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1917-Jun-07 04:29 23:51 Earth 0.032016277137148 0.0290292719244909 0.035014285575983 8.65495704760783 8.64533609534564 2421386.686959489 1430.49223273831 152134.553521837 8.56216689793663 11.1134719073651 109822.588903966 T 3 CATAB v2.0f-lin.ifort 2020-Jun-04 06:06:12 2020-Jun-04 06:06
1953-Jul-19 23:09 4_16:44 Earth 0.0813908933135232 0.0809783394405141 0.0824941512453 8.14917244873866 8.14515426198762 2434578.464621781 6763.7979505443 376277.784511014 40.4294733694905 84.2054323835474 274146.662327069 T 3 CATAB v2.0f-lin.ifort 2020-Jun-04 06:06:12 2020-Jun-04 06:06
1984-May-01 05:41 7_00:33 Earth 0.349358576189145 0.222304608355541 0.476426425122989 19.7258635766824 19.7254769345487 2445821.737138726 10113.4237962168 6336965.3367633 9.57670014161588 0.994439448796695 83913.775310137 T 3 CATAB v2.0f-lin.ifort 2020-Jun-04 06:06:12 2020-Jun-04 06:06
1989-Sep-07 01:14 8_02:41 Earth 0.305080733960411 0.176845957785296 0.439178135953483 17.9645631295108 17.9640769610398 2447776.551635271 11681.4482391384 6873861.69816682 41.5952176691344 -16.126461361033 265563.495399764 T 3 CATAB v2.0f-lin.ifort 2020-Jun-04 06:06:12 2020-Jun-04 06:06
2020-Jun-03 07:01 < 00:01 Earth 0.0196585400249108 0.0196413989312691 0.0196756810219739 9.08727958762352 9.07235219165467 2459003.792605532 0.0575971381101874 851.983936624765 6.38960979416985 0.411315901216946 2211.57288040935 T 3 CATAB v2.0f-lin.ifort 2020-Jun-04 06:06:12 2020-Jun-04 06:06
2082-May-02 22:17 19:53 Earth 0.351181382829401 0.336847470728928 0.36551528207975 19.7396988907672 19.73931452511 2481617.428748875 1192.93686877077 714766.072674713 10.3492680526883 -0.24091546265182 18269.4356591923 T 3 CATAB v2.0f-lin.ifort 2020-Jun-04 06:06:12 2020-Jun-04 06:06
2087-Sep-11 06:49 15:06 Earth 0.350180935300671 0.336607485807935 0.363786715447899 19.3102958701782 19.3099018346684 2483574.783703563 905.856887450665 698122.864706753 41.0337689909746 -13.9012952442468 269708.588722726 T 3 CATAB v2.0f-lin.ifort 2020-Jun-04 06:06:12 2020-Jun-04 06:06
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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