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C/2020 O2 (Amaral)
Classification: Hyperbolic Comet          SPK-ID: 1003707
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459275.5 (2021-Mar-02.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.002411963104327 1.853e-05  
a -2015.920220405145 15.485 au
q 4.862325192883757 2.1377e-05 au
i 71.74736568782899 7.6723e-05 deg
node 256.7558012312499 1.9088e-05 deg
peri 10.27734850580766 0.00069616 deg
M -.001953225216986902 2.2507e-05 deg
tp 2459454.873490855007
(2021-Aug-28.37349086)
0.0048937 TDB
period n/a
n/a
n/a
n/a
d
yr
n 1.088915205740046E-5 1.2546e-07 deg/d
Q n/a n/a au
  Orbit Determination Parameters
   # obs. used (total)      307  
   data-arc span      352 days  
   first obs. used      2020-07-23  
   last obs. used      2021-07-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .41987  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-26 23:12:29  

Additional Information
 Earth MOID = 3.86028 au 
 Jupiter MOID = .411526 au 
 T_jup = 0.856 
[ 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 6.4   0.5 14 from 272 observations, assumed slope, autocmod 2.9c
comet total magnitude slope K1 10.   n/a 14 autocmod 2.9c
comet nuclear magnitude M2 9.5   0.4 14 from 21 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
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]
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