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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.


Orbital Elements at Epoch 2459024.5 (2020-Jun-24.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9923750890834079 3.671e-05  
a 613.06022744884 2.9536 au
q 4.674529620803108 1.7702e-05 au
i 99.64691731677347 6.9415e-05 deg
node 68.40655428497983 8.0396e-05 deg
peri 128.8955245473641 0.00056309 deg
M .001285869218742569 9.2096e-06 deg
tp 2459004.696249811070
(2020-Jun-04.19624981)		 0.0041616 TDB
period 5544381.935657871
15179.69		 40067
109.7		 d
yr
n 6.493059175536111E-5 4.6923e-07 deg/d
Q 1221.445925276877 5.8846 au
   Orbit Determination Parameters
   # obs. used (total)      199  
   data-arc span      407 days (1.11 yr)  
   first obs. used      2020-04-30  
   last obs. used      2021-06-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .35384  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-01 22:12:48  

Additional Information
 Earth MOID = 3.9723 au 
 Jupiter MOID = .326269 au 
 T_jup = -0.440 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 11.1   0.4 14 2 parameter fit from 151 observations, autocmod 2.9c
comet total magnitude slope K1 9.   n/a 14 autocmod 2.9c
comet nuclear magnitude M2 13.7   0.6 14 from 4 observations, autocmod 2.9c
comet nuclear magnitude slope K2 5.   n/a 14 autocmod 2.9c
comet nuclear phase coefficient PC 0.03   n/a 14 autocmod 2.9c

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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