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C/2018 F4-B (PANSTARRS)
Classification: Hyperbolic Comet          SPK-ID: 1003726
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459178.5 (2020-Nov-25.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.001488625299925 2.4922e-05  
a -2310.848476799516 38.684 au
q 3.439987506857153 4.844e-05 au
i 78.09656692236872 0.00022382 deg
node 26.51237850894777 0.00017005 deg
peri 263.2070965675186 0.0011447 deg
M .003166920792003331 7.9492e-05 deg
tp 2458821.564016951854
(2019-Dec-04.06401695)
0.003889 TDB
period n/a
n/a
n/a
n/a
d
yr
n 8.872517600939535E-6 2.2279e-07 deg/d
Q n/a n/a au
  Orbit Determination Parameters
   # obs. used (total)      130  
   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      .5878  
   source      ORB  
   producer      Davide Farnocchia  
   solution date      2021-Sep-07 10:22:04  

Additional Information
 Earth MOID = 3.15989 au 
 Jupiter MOID = .594796 au 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e 6.211258763032586E-10 1.628723911433734E-10 8.147021113829239E-8 -1.442504192251731E-9 9.627080107539864E-9 1.575393680652862E-9
q 1.628723911433734E-10 2.346427137760946E-9 1.057776169015894E-7 -4.627441027117844E-9 5.378026113342365E-8 6.187413501855341E-9
tp 8.147021113829239E-8 1.057776169015894E-7 1.51240887431021E-5 -2.972382689486684E-7 3.30321886264421E-6 3.606134119376772E-7
node -1.442504192251731E-9 -4.627441027117844E-9 -2.972382689486684E-7 2.89172342415975E-8 -1.144264729536215E-7 -3.738280337923829E-8
peri 9.627080107539864E-9 5.378026113342365E-8 3.30321886264421E-6 -1.144264729536215E-7 1.310423171534575E-6 1.502402980808282E-7
i 1.575393680652862E-9 6.187413501855341E-9 3.606134119376772E-7 -3.738280337923829E-8 1.502402980808282E-7 5.009584901103965E-8

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 8.5   0.9 7 2 parameter fit from 107 observations, autocmod 2.9e
comet total magnitude slope K1 10.   n/a 7 autocmod 2.9e
comet nuclear magnitude M2 12.2   0.05 7 from 3 observations, autocmod 2.9e
comet nuclear magnitude slope K2 5.   n/a 7 autocmod 2.9e
comet nuclear phase coefficient PC 0.03   n/a 7 autocmod 2.9e
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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