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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.


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Orbital Elements at Epoch 2458969.5 (2020-Apr-30.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.0016754961225 0.00012476  
a -5262.777098044252 392.01 au
q 8.817762621355284 0.00026281 au
i 163.5731644546882 0.00033398 deg
node 250.2490381448259 0.00019307 deg
peri 48.36425367805646 0.0039942 deg
M -.002085188123996861 0.00023306 deg
tp 2459777.225200955648
(2022-Jul-16.72520096)
0.044002 TDB
period n/a
n/a
n/a
n/a
d
yr
n 2.581556352989608E-6 2.8844e-07 deg/d
Q n/a n/a au
  Orbit Determination Parameters
   # obs. used (total)      312  
   data-arc span      409 days (1.12 yr)  
   first obs. used      2019-05-27  
   last obs. used      2020-07-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   norm. resid. RMS      .42835  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jul-09 22:14:13  

Additional Information
 Earth MOID = 7.83995 au 
 Jupiter MOID = 3.58938 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 6.5   0.6 10 from 288 observations, assumed slope, autocmod 2.8
comet total magnitude slope K1 7.5   n/a 10 autocmod 2.8
comet nuclear magnitude M2 8.9   0.3 10 from 7 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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