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(2020 KE4)
Classification: Apollo [NEO]          SPK-ID: 54017215
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4900268977847045 0.00016215  
a 1.881375283534431 0.0005699 au
q .9594507897752348 1.4422e-05 au
i 4.548482413267291 0.0011907 deg
node 240.8942216289538 0.00045382 deg
peri 43.67105669318507 0.0009708 deg
M 65.15894017577105 0.029147 deg
tp 2459029.898404203951
(2020-Jun-29.39840420)
0.0012042 TDB
period 942.5655838001932
2.58
0.42828
0.001173
d
yr
n .3819362877101541 0.00017354 deg/d
Q 2.803299777293627 0.00084917 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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      6  
   norm. resid. RMS      .40121  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 22:33:59  

Additional Information
 Earth MOID = .0129997 au 
 Jupiter MOID = 2.38966 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 25.3   .52728 E2020L19 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 04:30 22:42 Earth 0.0320169501781253 0.0291752631248054 0.0348683068512874 8.6549408542559 8.64532008632997 2421386.687180296 1362.00690411924 144634.072614412 8.49937761977757 10.9592461979048 109094.085701106 T 4 CATAB v2.0g-lin.ifort 2021-Apr-15 22:33:59 2021-Apr-15 22:34
1953-Jul-19 23:09 4_17:44 Earth 0.0813909066294283 0.0809795444990957 0.0825048824976933 8.14916973914787 8.14515155171697 2434578.464464691 6824.40792984342 379506.288944878 40.4315793438265 84.2182300206875 274136.564808992 T 4 CATAB v2.0g-lin.ifort 2021-Apr-15 22:33:59 2021-Apr-15 22:34
1984-May-01 05:42 7_00:37 Earth 0.349358085488507 0.222259351025002 0.47647071316857 19.7258488075555 19.7254621645892 2445821.737167869 10116.9583161211 6339198.46345261 9.57682415273654 0.994464699947297 83914.7288725469 T 4 CATAB v2.0g-lin.ifort 2021-Apr-15 22:33:59 2021-Apr-15 22:34
1989-Sep-07 01:14 8_02:44 Earth 0.305081362837289 0.17681988805124 0.439208563666173 17.9645824170038 17.9640962500569 2447776.551672941 11684.0596411481 6875375.44205658 41.5952180536407 -16.1264290757964 265563.551454009 T 4 CATAB v2.0g-lin.ifort 2021-Apr-15 22:33:59 2021-Apr-15 22:34
2020-Jun-03 07:01 < 00:01 Earth 0.0196585399592984 0.0196413988445984 0.0196756809774198 9.0872795554604 9.07235215938611 2459003.792605177 0.0575965946214493 851.984983189149 6.38960977766909 0.411315350765497 2211.56967117052 T 4 CATAB v2.0g-lin.ifort 2021-Apr-15 22:33:59 2021-Apr-15 22:34
2082-May-02 22:17 20:10 Earth 0.351181459398241 0.336638990784388 0.365723913986284 19.7397009027955 19.7393165372613 2481617.428744947 1209.58066926587 725165.318146342 10.3480481509002 -0.231805745484383 17554.1911910528 T 4 CATAB v2.0g-lin.ifort 2021-Apr-15 22:33:59 2021-Apr-15 22:34
2087-Sep-11 06:49 14:46 Earth 0.350181089367966 0.336848055427856 0.363545320028567 19.3103002485321 19.309906213285 2483574.783711079 885.711131101732 685744.758948078 41.0331510457554 -13.9022079064833 269741.967148297 T 4 CATAB v2.0g-lin.ifort 2021-Apr-15 22:33:59 2021-Apr-15 22:34
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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