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C/2020 F2 (ATLAS)
Classification: Hyperbolic Comet          SPK-ID: 1003666
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.


Orbital Elements at Epoch 2459139.5 (2020-Oct-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.002474239432082 1.8405e-05  
a -3563.470916148462 26.502 au
q 8.816880255811988 4.8992e-05 au
i 163.5752388339155 6.7277e-05 deg
node 250.2507214193778 7.9353e-05 deg
peri 48.3747362345537 0.00085116 deg
M -.002954672299205944 3.2962e-05 deg
tp 2459777.198028814300
(2022-Jul-16.69802881)
0.013732 TDB
period n/a
n/a
n/a
n/a
d
yr
n 4.633340806619233E-6 5.1689e-08 deg/d
Q n/a n/a au
  Orbit Determination Parameters
   # obs. used (total)      658  
   data-arc span      776 days (2.12 yr)  
   first obs. used      2019-05-27  
   last obs. used      2021-07-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .38337  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-26 23:12:26  

Additional Information
 Earth MOID = 7.83736 au 
 Jupiter MOID = 3.58748 au 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 6.3   0.6 23 from 630 observations, assumed slope, autocmod 2.9c
comet total magnitude slope K1 7.5   n/a 23 autocmod 2.9c
comet nuclear magnitude M2 8.9   0.3 23 from 7 observations, autocmod 2.9c
comet nuclear magnitude slope K2 5.   n/a 23 autocmod 2.9c
comet nuclear phase coefficient PC 0.03   n/a 23 autocmod 2.9c
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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