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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 2458980.5 (2020-May-11.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.001708569519404 0.00011098  
a -5160.855101150061 335.33 au
q 8.817679719885136 0.000217 au
i 163.5732840956141 0.00030416 deg
node 250.2490972707082 0.00018446 deg
peri 48.36538973714126 0.0034005 deg
M -.002118044232982084 0.00020649 deg
tp 2459777.234182775747
(2022-Jul-16.73418278)
0.038793 TDB
period n/a
n/a
n/a
n/a
d
yr
n 2.658407633023874E-6 2.591e-07 deg/d
Q n/a n/a au
  Orbit Determination Parameters
   # obs. used (total)      364  
   data-arc span      425 days (1.16 yr)  
   first obs. used      2019-05-27  
   last obs. used      2020-07-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   norm. resid. RMS      .41994  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-06 07:15:24  

Additional Information
 Earth MOID = 7.84018 au 
 Jupiter MOID = 3.58921 au 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e 1.231718944372423E-8 -1.869451903484427E-8 2.56974272829788E-6 2.557320978201767E-9 3.005127982465901E-7 3.026190254516574E-9
q -1.869451903484427E-8 4.708685667001495E-8 -8.056468112310586E-6 -8.896682164131843E-10 -7.335666308189952E-7 4.853520342239564E-10
tp 2.56974272829788E-6 -8.056468112310586E-6 .001504861009182597 -5.271225168447183E-8 .0001263137172153508 -3.770975676261759E-7
node 2.557320978201767E-9 -8.896682164131843E-10 -5.271225168447183E-8 3.402469200390375E-8 5.298901487014823E-8 5.395787172167544E-8
peri 3.005127982465901E-7 -7.335666308189952E-7 .0001263137172153508 5.298901487014823E-8 1.156328727261953E-5 5.392969440774918E-8
i 3.026190254516574E-9 4.853520342239564E-10 -3.770975676261759E-7 5.395787172167544E-8 5.392969440774918E-8 9.251370949670153E-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 12 from 340 observations, assumed slope, autocmod 2.8
comet total magnitude slope K1 7.5   n/a 12 autocmod 2.8
comet nuclear magnitude M2 8.9   0.3 12 from 7 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a 12 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a 12 autocmod 2.8
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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