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C/2020 F3 (NEOWISE)
Classification: Comet          SPK-ID: 1003667
[ 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 2459064.5 (2020-Aug-03.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .99916958479388 2.044e-06  
a 354.8240202484576 0.87318 au
q .2946512619109637 3.4516e-07 au
i 128.937400236612 3.1967e-05 deg
node 61.00942236569867 0.00037042 deg
peri 37.2784724513936 0.00022161 deg
M .00447123265317499 1.6503e-05 deg
tp 2459034.179056390035
(2020-Jul-03.67905639)		 3.335e-05 TDB
period 2441281.978882569
6683.87		 9011.6
24.67		 d
yr
n .0001474635061062386 5.4434e-07 deg/d
Q 709.3533892350042 1.7456 au
   Orbit Determination Parameters
   # obs. used (total)      376  
   data-arc span      113 days  
   first obs. used      2020-03-27  
   last obs. used      2020-07-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   norm. resid. RMS      .43921  
   source      ORB  
   producer      Javier Roa  
   solution date      2020-Jul-20 07:12:57  

Additional Information
 Earth MOID = .362538 au 
 Jupiter MOID = .813535 au 
 T_jup = -0.408 
[ 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 10.7   0.7 15 2 parameter fit from 340 observations, autocmod 2.8
comet total magnitude slope K1 17.75   n/a 15 autocmod 2.8
comet nuclear magnitude M2 14.9   0.2 15 from 10 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a 15 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a 15 autocmod 2.8

Alternate Designations
 Perihelion 
Year (est.)		  New-Style 
Desig		 Roman
 Numeral 		 Year/
 Letter 
 2020.5   C/2020 F3       
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]
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