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C/2020 H8 (PANSTARRS)
Classification: Comet          SPK-ID: 1003686
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]

[ show orbit diagram ]
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 
[ 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 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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