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C/2020 J1 (SONEAR)
Classification: Hyperbolic 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 2459009.5 (2020-Jun-09.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.00048270179829 0.00029329  
a -6951.556054319916 4223.5 au
q 3.355528608334096 0.00015169 au
i 142.3046418982348 0.00020068 deg
node 226.5469269810625 0.0020749 deg
peri 341.6953538074111 0.00768 deg
M -.0005330571770282149 0.00048573 deg
tp 2459322.967676446207
(2021-Apr-18.46767645)
0.038009 TDB
period n/a
n/a
n/a
n/a
d
yr
n 1.700517205064015E-6 1.5498e-06 deg/d
Q n/a n/a au
  Orbit Determination Parameters
   # obs. used (total)      132  
   data-arc span      90 days  
   first obs. used      2020-05-01  
   last obs. used      2020-07-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   norm. resid. RMS      .41564  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-06 07:15:26  

Additional Information
 Earth MOID = 2.36459 au 
 Jupiter MOID = 1.88924 au 
 T_jup = -1.797 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e 8.60164369732121E-8 2.823800122104908E-8 -1.09955310842296E-5 -5.313348524798304E-7 -1.976096540397094E-6 4.758995970846971E-8
q 2.823800122104908E-8 2.301066309237893E-8 -4.324728355873499E-6 -2.747915074174717E-7 -1.078093400776973E-6 2.545802886951137E-8
tp -1.09955310842296E-5 -4.324728355873499E-6 .001444682152233002 7.291623992295645E-5 .000275006703759358 -6.574044065565845E-6
node -5.313348524798304E-7 -2.747915074174717E-7 7.291623992295645E-5 4.305342410181008E-6 1.554410316850627E-5 -4.081884599448425E-7
peri -1.976096540397094E-6 -1.078093400776973E-6 .000275006703759358 1.554410316850627E-5 5.898188983176476E-5 -1.431531621597664E-6
i 4.758995970846971E-8 2.545802886951137E-8 -6.574044065565845E-6 -4.081884599448425E-7 -1.431531621597664E-6 4.027399366654381E-8

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 7.1   0.4 10 2 parameter fit from 111 observations, autocmod 2.8
comet total magnitude slope K1 10.   n/a 10 autocmod 2.8
comet nuclear magnitude M2 10.0   0.2 10 from 11 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a 10 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a 10 autocmod 2.8
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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