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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 
[ show covariance matrix ]

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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