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C/2020 H8 (PANSTARRS)
Classification: Comet          SPK-ID: 1003686
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | 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 2458990.5 (2020-May-21.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9923811626312602 0.00021507  
a 613.5488935068465 17.334 au
q 4.674529237398922 0.00011684 au
i 99.64712788897103 0.0013501 deg
node 68.40631996466423 0.001725 deg
peri 128.8954766341411 0.0066793 deg
M 359.9990793239778 3.6965e-05 deg
tp 2459004.696344331996
(2020-Jun-04.19634433)
0.050688 TDB
period 5551012.339098244
15197.84
2.3525e+05
644.1
d
yr
n 6.485303544803174E-5 2.7484e-06 deg/d
Q 1222.423257776294 34.537 au
  Orbit Determination Parameters
   # obs. used (total)      169  
   data-arc span      90 days  
   first obs. used      2020-04-30  
   last obs. used      2020-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   norm. resid. RMS      .35113  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-06 07:15:26  

Additional Information
 Earth MOID = 3.97234 au 
 Jupiter MOID = .32644 au 
 T_jup = -0.440 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e 4.625296369464879E-8 2.47658467164383E-8 7.087626442109816E-6 -3.550595680274656E-7 8.610519419459661E-7 2.791693248970212E-7
q 2.47658467164383E-8 1.365214683584802E-8 3.416601542624737E-6 -1.970738634908637E-7 4.069358367705253E-7 1.546990140979691E-7
tp 7.087626442109816E-6 3.416601542624737E-6 .002569270662596441 -4.444481281930679E-5 .0003377987342868451 3.575663107385071E-5
node -3.550595680274656E-7 -1.970738634908637E-7 -4.444481281930679E-5 2.975648361047175E-6 -5.183602550474091E-6 -2.328143390172431E-6
peri 8.610519419459661E-7 4.069358367705253E-7 .0003377987342868451 -5.183602550474091E-6 4.461261475465446E-5 4.18942319175119E-6
i 2.791693248970212E-7 1.546990140979691E-7 3.575663107385071E-5 -2.328143390172431E-6 4.18942319175119E-6 1.82282008337603E-6

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 10.4   0.4 8 from 121 observations, assumed slope, autocmod 2.8
comet total magnitude slope K1 10.   n/a 8 autocmod 2.8
comet nuclear magnitude M2 13.7   0.6 8 from 4 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a 8 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a 8 autocmod 2.8

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2020.4   C/2020 H8       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]
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