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JPL Small-Body Database Browser
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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 2458837.5 (2019-Dec-20.0) TDB
Reference: JPL 48 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 3.357347457193506 0.00042908  
a -.8512294961082175 0.00013906 au
q 2.006643688138816 3.7859e-05 au
i 44.05295628554726 0.00064361 deg
node 308.1497921086189 0.00036188 deg
peri 209.1242254996148 0.0019419 deg
M 14.36500198512929 0.0072231 deg
tp 2458826.053528995326
(2019-Dec-08.55352900)
0.0031943 TDB
period n/a
n/a
n/a
n/a
d
yr
n 1.254972120163809 0.00030753 deg/d
Q n/a n/a au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] -9.058832592307404E-8 8.589E-8
A2 [EST] 2.28188030199402E-8 1.759E-7
A3 [EST] -1.164442861822194E-7 4.357E-8
  Orbit Determination Parameters
   # obs. used (total)      1039  
   data-arc span      356 days  
   first obs. used      2018-12-13  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   norm. resid. RMS      .4617  
   source      ORB  
   producer      Davide Farnocchia  
   solution date      2019-Dec-05 15:17:09  

Additional Information
 Earth MOID = 1.09244 au 
 Jupiter MOID = 2.38794 au 
[ hide covariance matrix ]
Orbit Covariance (9×9)
  e q tp node peri i A1 A2 A3
e 1.841085299845435E-7 1.607775437120485E-8 -1.141081349084162E-6 5.099088867892057E-8 -6.77237069051564E-7 -2.339872705084544E-7 2.654383284565915E-12 7.191525616902515E-11 9.301035842815796E-12
q 1.607775437120485E-8 1.433304489465123E-9 -9.154464559536797E-8 6.139999520896589E-9 -5.402544772702442E-8 -1.887553804377321E-8 -1.470902411877237E-13 6.001125376894663E-12 6.369411151030624E-13
tp -1.141081349084162E-6 -9.154464559536797E-8 1.020324946184772E-5 2.610962745741006E-7 6.196555030091808E-6 2.016300802519429E-6 -1.672937327796993E-10 -5.353406238306229E-10 -1.204122768457063E-10
node 5.099088867892057E-8 6.139999520896589E-9 2.610962745741006E-7 1.309582138867265E-7 1.754532125514023E-7 5.050700375729515E-8 -2.663708266689222E-11 2.21511445865667E-12 -1.022133354777466E-11
peri -6.77237069051564E-7 -5.402544772702442E-8 6.196555030091808E-6 1.754532125514023E-7 3.771037744288926E-6 1.215351120267585E-6 -1.062296074512841E-10 -3.214142352930817E-10 -7.354203059004704E-11
i -2.339872705084544E-7 -1.887553804377321E-8 2.016300802519429E-6 5.050700375729515E-8 1.215351120267585E-6 4.142335914071683E-7 -3.030314343043855E-11 -1.082362641859822E-10 -2.47030598065408E-11
A1 2.654383284565915E-12 -1.470902411877237E-13 -1.672937327796993E-10 -2.663708266689222E-11 -1.062296074512841E-10 -3.030314343043855E-11 7.377023438399676E-15 5.260724195655428E-15 3.127260684096238E-15
A2 7.191525616902515E-11 6.001125376894663E-12 -5.353406238306229E-10 2.21511445865667E-12 -3.214142352930817E-10 -1.082362641859822E-10 5.260724195655428E-15 3.094496575263102E-14 5.508689006848921E-15
A3 9.301035842815796E-12 6.369411151030624E-13 -1.204122768457063E-10 -1.022133354777466E-11 -7.354203059004704E-11 -2.47030598065408E-11 3.127260684096238E-15 5.508689006848921E-15 1.8982672029373E-15

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 13.6   0.7 48 2 parameter fit from 1515 observations, autocmod 2.8
comet total magnitude slope K1 4.5   n/a 48 autocmod 2.8
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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