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C/2020 H3 (Wierzchos)
Classification: Hyperbolic Comet          SPK-ID: 1003678
[ 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 2459011.5 (2020-Jun-11.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.002220819751751 4.2075e-05  
a -1037.630142629547 19.652 au
q 2.304389515763943 1.4697e-05 au
i 62.36840463987316 0.00038719 deg
node 270.5693697333738 0.00030159 deg
peri 29.60764335684308 0.00055429 deg
M .0002191943533528286 6.2482e-06 deg
tp 2459004.066571692632
(2020-Jun-03.56657169)		 0.0014203 TDB
period n/a
n/a		 n/a
n/a		 d
yr
n 2.948765284190117E-5 8.3773e-07 deg/d
Q n/a n/a au
   Orbit Determination Parameters
   # obs. used (total)      129  
   data-arc span      123 days  
   first obs. used      2020-04-25  
   last obs. used      2020-08-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   norm. resid. RMS      .55  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Sep-24 20:18:23  

Additional Information
 Earth MOID = 1.37202 au 
 Jupiter MOID = 2.72511 au 
 T_jup = 0.946 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 7.4   0.6 16 from 83 observations, assumed slope, autocmod 2.8
comet total magnitude slope K1 27.5   n/a 16 autocmod 2.8
comet nuclear magnitude M2 17.0   0.4 16 from 3 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a 16 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a 16 autocmod 2.8
[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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