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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 2458984.5 (2020-May-15.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.001746814227473 0.00010157  
a -5047.818173066495 293.59 au
q 8.817600602409449 0.00019666 au
i 163.573331613493 0.00029463 deg
node 250.2491237953759 0.00018098 deg
peri 48.36655517016037 0.0031099 deg
M -.00217862101761643 0.00019012 deg
tp 2459777.244375517509
(2022-Jul-16.74437552)
0.036549 TDB
period n/a
n/a
n/a
n/a
d
yr
n 2.74820116660457E-6 2.3976e-07 deg/d
Q n/a n/a au
  Orbit Determination Parameters
   # obs. used (total)      376  
   data-arc span      454 days (1.24 yr)  
   first obs. used      2019-05-27  
   last obs. used      2020-08-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   norm. resid. RMS      .41877  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Sep-02 22:14:13  

Additional Information
 Earth MOID = 7.84007 au 
 Jupiter MOID = 3.58911 au 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e 1.031621018811951E-8 -1.460903722325588E-8 1.992730063416832E-6 2.519652831937148E-9 2.39341518708635E-7 3.187815520641564E-9
q -1.460903722325588E-8 3.867445196031103E-8 -6.864812820724139E-6 -5.36968411514927E-10 -6.074371581314281E-7 7.412857635309032E-10
tp 1.992730063416832E-6 -6.864812820724139E-6 .001335816386834725 -1.177932846847102E-7 .0001084343558004947 -4.455726859079701E-7
node 2.519652831937148E-9 -5.36968411514927E-10 -1.177932846847102E-7 3.275312782677952E-8 4.677987780335552E-8 5.127152724746665E-8
peri 2.39341518708635E-7 -6.074371581314281E-7 .0001084343558004947 4.677987780335552E-8 9.671364915098719E-6 4.814020101347119E-8
i 3.187815520641564E-9 7.412857635309032E-10 -4.455726859079701E-7 5.127152724746665E-8 4.814020101347119E-8 8.680796386717189E-8

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 16 from 352 observations, assumed slope, autocmod 2.8
comet total magnitude slope K1 7.5   n/a 16 autocmod 2.8
comet nuclear magnitude M2 8.9   0.3 16 from 7 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a 16 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a 16 autocmod 2.8
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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