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C/2020 F2 (ATLAS)
Classification: Hyperbolic Comet          SPK-ID: 1003666
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ hide orbit diagram ]

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 2459056.5 (2020-Jul-26.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.002079309113828 1.9194e-05  
a -4240.437208126021 39.145 au
q 8.81717973347193 9.4459e-05 au
i 163.5740034058163 0.00010713 deg
node 250.2496105705673 9.3999e-05 deg
peri 48.37160351024938 0.0015231 deg
M -.002572583342318408 3.5633e-05 deg
tp 2459777.244495469399
(2022-Jul-16.74449547)
0.02295 TDB
period n/a
n/a
n/a
n/a
d
yr
n 3.569341643938553E-6 4.9424e-08 deg/d
Q n/a n/a au
  Orbit Determination Parameters
   # obs. used (total)      481  
   data-arc span      706 days (1.93 yr)  
   first obs. used      2019-05-27  
   last obs. used      2021-05-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .39485  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-02 23:42:45  

Additional Information
 Earth MOID = 7.83872 au 
 Jupiter MOID = 3.58811 au 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e 3.684149163679856E-10 -4.411994300925592E-11 5.802542468413415E-8 4.687020059869784E-11 5.194615486427242E-9 -9.413477634473871E-12
q -4.411994300925592E-11 8.922595311222957E-9 -2.123194395536631E-6 -1.136919851226428E-9 -1.409859399879717E-7 -2.084804462453692E-9
tp 5.802542468413415E-8 -2.123194395536631E-6 .0005267149027784851 2.759020556912719E-7 3.479604226124956E-5 4.871553522994116E-7
node 4.687020059869784E-11 -1.136919851226428E-9 2.759020556912719E-7 8.835885193909689E-9 2.680140738364777E-8 8.871950680377789E-9
peri 5.194615486427242E-9 -1.409859399879717E-7 3.479604226124956E-5 2.680140738364777E-8 2.319765706947007E-6 4.068074146420468E-8
i -9.413477634473871E-12 -2.084804462453692E-9 4.871553522994116E-7 8.871950680377789E-9 4.068074146420468E-8 1.147653917309867E-8

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 6.4   0.6 20 from 457 observations, assumed slope, autocmod 2.9c
comet total magnitude slope K1 7.5   n/a 20 autocmod 2.9c
comet nuclear magnitude M2 8.9   0.3 20 from 7 observations, autocmod 2.9c
comet nuclear magnitude slope K2 5.   n/a 20 autocmod 2.9c
comet nuclear phase coefficient PC 0.03   n/a 20 autocmod 2.9c
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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