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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 2459006.5 (2020-Jun-06.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9924206019907645 8.1971e-06  
a 210.2337783798476 0.22746 au
q 1.593445481326266 1.08e-06 au
i 128.7154618820291 4.4019e-05 deg
node 27.92777413697866 7.2219e-05 deg
peri 62.69776628922841 0.00011918 deg
M .002223888856487378 3.5945e-06 deg
tp 2458999.621990865933
(2020-May-30.12199087)
0.00013563 TDB
period 1113402.444119929
3048.33
1806.9
4.947
d
yr
n .0003233332223233588 5.2473e-07 deg/d
Q 418.8741112783689 0.45319 au
  Orbit Determination Parameters
   # obs. used (total)      206  
   data-arc span      281 days  
   first obs. used      2019-10-25  
   last obs. used      2020-08-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   norm. resid. RMS      .59024  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-06 07:15:30  

Additional Information
 Earth MOID = .896312 au 
 Jupiter MOID = .055424 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 15.0   0.9 9 2 parameter fit from 190 observations, autocmod 2.8
comet total magnitude slope K1 12.5   n/a 9 autocmod 2.8
comet nuclear magnitude M2 17.5   0.5 9 from 8 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a 9 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a 9 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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