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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.


Orbital Elements at Epoch 2459011.5 (2020-Jun-11.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.002218815626618 4.1482e-05  
a -1038.566849506374 19.41 au
q 2.304388354972246 1.4438e-05 au
i 62.36838376631006 0.00038059 deg
node 270.5693478869658 0.00029659 deg
peri 29.6076089263114 0.00054711 deg
M .000218900699190957 6.1575e-06 deg
tp 2459004.066475812255
(2020-Jun-03.56647581)		 0.0014019 TDB
period n/a
n/a		 n/a
n/a		 d
yr
n 2.944776846920595E-5 8.2554e-07 deg/d
Q n/a n/a au
   Orbit Determination Parameters
   # obs. used (total)      131  
   data-arc span      123 days  
   first obs. used      2020-04-25  
   last obs. used      2020-08-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .54783  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:34:05  

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 18 from 83 observations, assumed slope, autocmod 2.9c
comet total magnitude slope K1 27.5   n/a 18 autocmod 2.9c
comet nuclear magnitude M2 17.0   0.4 18 from 3 observations, autocmod 2.9c
comet nuclear magnitude slope K2 5.   n/a 18 autocmod 2.9c
comet nuclear phase coefficient PC 0.03   n/a 18 autocmod 2.9c
[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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