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C/2019 Q4 (Borisov)
Classification: Hyperbolic Comet          SPK-ID: 1003639
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459062.5 (2020-Aug-01.0) TDB
Reference: JPL 53 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 3.356215101434632 1.2419e-05  
a -.8516123560275226 6.4703e-06 au
q 2.006581893840375 5.1673e-06 au
i 44.05257068647377 6.1532e-06 deg
node 308.1487262895379 4.3381e-05 deg
peri 209.12367864 0.00011673 deg
M 296.5442557294122 0.0030871 deg
tp 2458826.045070213072
(2019-Dec-08.54507021)
0.00025087 TDB
period n/a
n/a
n/a
n/a
d
yr
n 1.25412591734345 1.4293e-05 deg/d
Q n/a n/a au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 7.093444133467172E-8 7.611E-9
A2 [EST] -1.4438115056624E-8 2.721E-9
A3 [EST] 6.53473450694026E-10 1.367E-9
DT [EST] 87.29159436127772 4.648
  Orbit Determination Parameters
   # obs. used (total)      1428  
   data-arc span      311 days  
   first obs. used      2019-08-30  
   last obs. used      2020-07-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   norm. resid. RMS      .47851  
   source      ORB  
   producer      Davide Farnocchia  
   solution date      2020-Aug-21 09:32:58  

Additional Information
 Earth MOID = 1.0939 au 
 Jupiter MOID = 2.38873 au 
[ hide covariance matrix ]
Orbit Covariance (10×10)
  e q tp node peri i A1 A2 A3 DT
e 1.542230297295728E-10 -5.511622492555947E-11 2.795560226030938E-9 4.434959593831319E-10 -1.302970965660191E-9 8.778561891540475E-12 9.001987975960445E-14 2.4512264687685E-14 -1.301735558368053E-14 3.962947623559729E-5
q -5.511622492555947E-11 2.670092668649786E-11 -1.199461869454189E-9 -1.772508156009416E-10 5.924019248634962E-10 4.357008175820797E-12 -3.67260769625034E-14 -7.912770881250117E-15 5.508089948589812E-15 -2.225218637149287E-5
tp 2.795560226030938E-9 -1.199461869454189E-9 6.293708442066078E-8 9.392425569876376E-9 -2.657443659636334E-8 -4.485641075524455E-10 1.856146921502742E-12 5.635760610166663E-13 -3.049228759277746E-13 .0008958710821208855
node 4.434959593831319E-10 -1.772508156009416E-10 9.392425569876376E-9 1.88194466390041E-9 -4.338450612371656E-9 -6.157085868206784E-11 2.86442738772152E-13 8.843411680603555E-14 -5.731283918425786E-14 .0001237290378356535
peri -1.302970965660191E-9 5.924019248634962E-10 -2.657443659636334E-8 -4.338450612371656E-9 1.362691200578457E-8 3.509883204662865E-11 -8.374639450914172E-13 -1.795342002194735E-13 1.299168280036091E-13 -.0004811018651555815
i 8.778561891540475E-12 4.357008175820797E-12 -4.485641075524455E-10 -6.157085868206784E-11 3.509883204662865E-11 3.786199862093532E-11 -6.010170856639875E-15 -6.682320132228322E-15 3.440673687863801E-15 -2.31513371108752E-6
A1 9.001987975960445E-14 -3.67260769625034E-14 1.856146921502742E-12 2.86442738772152E-13 -8.374639450914172E-13 -6.010170856639875E-15 5.792292084285157E-17 1.611909055566296E-17 -8.888402482026763E-18 2.63366899897789E-8
A2 2.4512264687685E-14 -7.912770881250117E-15 5.635760610166663E-13 8.843411680603555E-14 -1.795342002194735E-13 -6.682320132228322E-15 1.611909055566296E-17 7.406407996617306E-18 -3.050434270286792E-18 3.696633958613458E-9
A3 -1.301735558368053E-14 5.508089948589812E-15 -3.049228759277746E-13 -5.731283918425786E-14 1.299168280036091E-13 3.440673687863801E-15 -8.888402482026763E-18 -3.050434270286792E-18 1.86887126407753E-18 -3.805195120452057E-9
DT 3.962947623559729E-5 -2.225218637149287E-5 .0008958710821208855 .0001237290378356535 -.0004811018651555815 -2.31513371108752E-6 2.63366899897789E-8 3.696633958613458E-9 -3.805195120452057E-9 21.60692546869389

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 13.7   0.8 53 2 parameter fit from 2269 observations, autocmod 2.8
comet total magnitude slope K1 4.5   n/a 53 autocmod 2.8
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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