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C/2020 H5 (Robinson)
Classification: Comet          SPK-ID: 1003680
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459171.5 (2020-Nov-18.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9975891344709188 4.9575e-05  
a 3876.340089529085 79.732 au
q 9.345334700841233 6.1093e-05 au
i 70.20891731495085 0.00013174 deg
node 210.6426976638721 9.8111e-05 deg
peri 326.4113424712665 0.0043084 deg
M 359.9999010670257 2.9031e-06 deg
tp 2459195.725335538094
(2020-Dec-12.22533554)
0.089713 TDB
period 88151810.40535064
241346.50
2.7198e+06
7446
d
yr
n 4.08386394272112E-6 1.26e-07 deg/d
Q 7743.33484435733 159.27 au
  Orbit Determination Parameters
   # obs. used (total)      143  
   data-arc span      442 days (1.21 yr)  
   first obs. used      2020-04-22  
   last obs. used      2021-07-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .49709  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-26 23:12:28  

Additional Information
 Earth MOID = 8.47914 au 
 Jupiter MOID = 4.50519 au 
 T_jup = 1.284 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 4.5   0.5 13 from 135 observations, assumed slope, autocmod 2.9c
comet total magnitude slope K1 10.   n/a 13 autocmod 2.9c

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2020.9   C/2020 H5       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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