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C/2020 F8 (SWAN)
Classification: Comet          SPK-ID: 1003671
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | 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 2458965.5 (2020-Apr-26.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .999935216427192 5.0729e-05  
a 6642.609969080713 5201.6 au
q .4303320065673257 6.3132e-06 au
i 110.7977498883903 0.00074495 deg
node 260.0292279461612 0.00084046 deg
peri 68.19332611345386 0.0018966 deg
M 359.9999425718086 6.7456e-05 deg
tp 2458997.044902864016
(2020-May-27.54490286)
0.00073802 TDB
period 197745475.8752437
541397.61
2.3227e+08
6.359e+05
d
yr
n 1.820522054457123E-6 2.1384e-06 deg/d
Q 13284.78960615486 10403 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 1.492750115840302E-7 1.588E-8
A2 [EST] -2.606070136171146E-8 1.13E-8
  Orbit Determination Parameters
   # obs. used (total)      376  
   data-arc span      42 days  
   first obs. used      2020-04-10  
   last obs. used      2020-05-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   norm. resid. RMS      .71527  
   source      ORB  
   producer      Shantanu Naidu  
   solution date      2020-Jun-29 12:13:35  

Additional Information
 Earth MOID = .193693 au 
 Jupiter MOID = 2.34625 au 
 T_jup = -0.288 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 11.6   1. 7 2 parameter fit from 350 observations, autocmod 2.8
comet total magnitude slope K1 4.5   n/a 7 autocmod 2.8

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2020.4   C/2020 F8       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]
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