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C/1973 E1 (Kohoutek)
Classification: Hyperbolic Comet          SPK-ID: 1001152
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.


Orbital Elements at Epoch 2442022.5 (1973-Dec-06.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.000007809885518 6.9159e-07  
a -18236.50704838456 1614.9 au
q .1424250322974156 2.5535e-07 au
i 14.3041449344601 4.7282e-05 deg
node 258.4894909953879 0.00017659 deg
peri 37.79756893411028 0.00016016 deg
M -8.977059270580618E-6 1.1924e-06 deg
tp 2442044.930683474144
(1973-Dec-28.43068347)
2.6354e-05 TDB
period n/a
n/a
n/a
n/a
d
yr
n 4.002133631339649E-7 5.316e-08 deg/d
Q n/a n/a au
  Orbit Determination Parameters
   # obs. used (total)      812  
   data-arc span      453 days (1.24 yr)  
   first obs. used      1973-01-28  
   last obs. used      1974-04-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .60804  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:29:22  

Additional Information
 Earth MOID = .029043 au 
 Jupiter MOID = .399884 au 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e 4.782898563597464E-13 -9.683211591557008E-16 -5.052998986351441E-13 -3.66522017329246E-11 1.315287056667694E-11 -2.834653859624229E-12
q -9.683211591557008E-16 6.520511106927736E-14 -2.227844737204198E-12 -9.243867776254647E-12 4.565583264044954E-12 -7.496035526847467E-13
tp -5.052998986351441E-13 -2.227844737204198E-12 6.945303808577109E-10 7.462331219879551E-10 1.39529462511203E-10 1.445945789544269E-11
node -3.66522017329246E-11 -9.243867776254647E-12 7.462331219879551E-10 3.118406436399324E-8 -2.629796790230338E-8 9.37312950859821E-10
peri 1.315287056667694E-11 4.565583264044954E-12 1.39529462511203E-10 -2.629796790230338E-8 2.565082910830651E-8 -6.984911254959152E-10
i -2.834653859624229E-12 -7.496035526847467E-13 1.445945789544269E-11 9.37312950859821E-10 -6.984911254959152E-10 2.235625386049333E-9

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 5.8   0.8 2 2 parameter fit from 126 observations, autocmod 2.9c
comet total magnitude slope K1 9.   n/a 2 autocmod 2.9c
comet nuclear magnitude M2 9.5   1. 2 from 3 observations, autocmod 2.9c
comet nuclear magnitude slope K2 5.   n/a 2 autocmod 2.9c
comet nuclear phase coefficient PC 0.03   n/a 2 autocmod 2.9c
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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