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C/2020 O2 (Amaral)
Classification: Hyperbolic Comet          SPK-ID: 1003707
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | 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 2459202.5 (2020-Dec-19.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.002344059505284 3.7659e-05  
a -2074.398631782665 33.313 au
q 4.862513830578147 5.7943e-05 au
i 71.74776217913212 0.00018658 deg
node 256.755677757703 8.9727e-05 deg
peri 10.26918817921225 0.0016496 deg
M -.00263218074491937 6.3361e-05 deg
tp 2459454.819002974172
(2021-Aug-28.31900297)
0.011352 TDB
period n/a
n/a
n/a
n/a
d
yr
n 1.043195603142426E-5 2.5129e-07 deg/d
Q n/a n/a au
  Orbit Determination Parameters
   # obs. used (total)      183  
   data-arc span      311 days  
   first obs. used      2020-07-23  
   last obs. used      2021-05-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .41607  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-31 22:42:54  

Additional Information
 Earth MOID = 3.85881 au 
 Jupiter MOID = .411053 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   0.4 12 from 168 observations, assumed slope, autocmod 2.9c
comet total magnitude slope K1 10.25   n/a 12 autocmod 2.9c
comet nuclear magnitude M2 9.6   0.4 12 from 6 observations, autocmod 2.9c
comet nuclear magnitude slope K2 5.   n/a 12 autocmod 2.9c
comet nuclear phase coefficient PC 0.03   n/a 12 autocmod 2.9c
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]
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