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C/2020 J1 (SONEAR)
Classification: Comet          SPK-ID: 1003683
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 2458991.5 (2020-May-22.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9996421289976375 0.00083404  
a 9376.422823689181 21853 au
q 3.355549834488351 0.00031465 au
i 142.3045818801252 0.00060596 deg
node 226.5485728080731 0.0062981 deg
peri 341.705141688954 0.017894 deg
M 359.9996400683466 0.0012584 deg
tp 2459323.067338005011
(2021-Apr-18.56733801)
0.10069 TDB
period 331630298.5453717
907954.27
1.1593e+09
3.174e+06
d
yr
n 1.085546168667538E-6 3.795e-06 deg/d
Q 18749.49009754388 43698 au
  Orbit Determination Parameters
   # obs. used (total)      94  
   data-arc span      64 days  
   first obs. used      2020-05-01  
   last obs. used      2020-07-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   norm. resid. RMS      .40797  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jul-09 22:14:19  

Additional Information
 Earth MOID = 2.36442 au 
 Jupiter MOID = 1.88936 au 
 T_jup = -1.797 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 6.4   0.3 8 from 81 observations, assumed slope, autocmod 2.8
comet total magnitude slope K1 11.   n/a 8 autocmod 2.8
comet nuclear magnitude M2 9.6   0.05 8 from 3 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a 8 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a 8 autocmod 2.8

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2021.3   C/2020 J1       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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