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C/2018 F4-A (PANSTARRS)
Classification: Hyperbolic Comet          SPK-ID: 1003725
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459174.5 (2020-Nov-21.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.001357547555104 2.3998e-05  
a -2534.088834514199 44.792 au
q 3.440146101711038 4.7217e-05 au
i 78.09577277638036 0.00022307 deg
node 26.51274461621113 0.00017061 deg
peri 263.2205038033897 0.0011163 deg
M .002726441031224059 7.2264e-05 deg
tp 2458821.621833597016
(2019-Dec-04.12183360)
0.0037127 TDB
period n/a
n/a
n/a
n/a
d
yr
n 7.726295619294523E-6 2.0485e-07 deg/d
Q n/a n/a au
  Orbit Determination Parameters
   # obs. used (total)      135  
   data-arc span      336 days  
   first obs. used      2020-09-12  
   last obs. used      2021-08-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .48119  
   source      ORB  
   producer      Davide Farnocchia  
   solution date      2021-Sep-07 10:21:20  

Additional Information
 Earth MOID = 3.15975 au 
 Jupiter MOID = .595691 au 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e 5.759058913861038E-10 1.42403469032482E-10 7.377691344883894E-8 -1.437592342066322E-9 8.611939484898316E-9 1.630693590520344E-9
q 1.42403469032482E-10 2.229465441873482E-9 1.003581752297247E-7 -4.67075991107152E-9 5.119998010493013E-8 6.34897316413542E-9
tp 7.377691344883894E-8 1.003581752297247E-7 1.378428799182797E-5 -2.983676757961831E-7 3.093835399588644E-6 3.729378610058578E-7
node -1.437592342066322E-9 -4.67075991107152E-9 -2.983676757961831E-7 2.910612510369819E-8 -1.153332420683204E-7 -3.745844750531425E-8
peri 8.611939484898316E-9 5.119998010493013E-8 3.093835399588644E-6 -1.153332420683204E-7 1.246166757102919E-6 1.541807766298742E-7
i 1.630693590520344E-9 6.34897316413542E-9 3.729378610058578E-7 -3.745844750531425E-8 1.541807766298742E-7 4.975992444250113E-8

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 12.0   0.9 8 2 parameter fit from 117 observations, autocmod 2.9e
comet total magnitude slope K1 4.5   n/a 8 autocmod 2.9e
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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