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

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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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 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 13.7   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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