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C/2020 K3 (Leonard)
Classification: Comet          SPK-ID: 1003690
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

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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 2459008.5 (2020-Jun-08.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9924218659294004 7.62e-06  
a 210.2689119623193 0.2115 au
q 1.593446005729559 9.603e-07 au
i 128.7154438377245 3.959e-05 deg
node 27.92776694904519 6.9768e-05 deg
peri 62.69777461688265 0.00010728 deg
M .002869827106937654 4.3205e-06 deg
tp 2458999.622017989470
(2020-May-30.12201799)
0.00012638 TDB
period 1113681.558050819
3049.09
1680.3
4.6
d
yr
n .0003232521876631208 4.8772e-07 deg/d
Q 418.9443779189091 0.4214 au
  Orbit Determination Parameters
   # obs. used (total)      212  
   data-arc span      323 days  
   first obs. used      2019-10-25  
   last obs. used      2020-09-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   norm. resid. RMS      .56745  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Sep-24 20:18:33  

Additional Information
 Earth MOID = .896077 au 
 Jupiter MOID = .055419 au 
 T_jup = -0.952 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 14.9   0.9 13 2 parameter fit from 195 observations, autocmod 2.8
comet total magnitude slope K1 13.   n/a 13 autocmod 2.8
comet nuclear magnitude M2 17.5   0.5 13 from 8 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a 13 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a 13 autocmod 2.8

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2020.4   C/2020 K3       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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