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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 2459339.5 (2021-May-05.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.002437918821425 1.0892e-05  
a -1994.418017427765 8.9091 au
q 4.862229222476217 1.055e-05 au
i 71.74740964649635 5.9757e-05 deg
node 256.7557955516373 1.4855e-05 deg
peri 10.2837475117774 0.00035871 deg
M -.001277204562842066 8.5589e-06 deg
tp 2459454.919893926689
(2021-Aug-28.41989393)
0.0026315 TDB
period n/a
n/a
n/a
n/a
d
yr
n 1.106572289568473E-5 7.4146e-08 deg/d
Q n/a n/a au
  Orbit Determination Parameters
   # obs. used (total)      511  
   data-arc span      405 days (1.11 yr)  
   first obs. used      2020-07-23  
   last obs. used      2021-09-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .40317  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Sep-04 23:43:06  

Additional Information
 Earth MOID = 3.85934 au 
 Jupiter MOID = .411863 au 
 T_jup = 0.856 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e 1.186451873176636E-10 4.766309606993824E-11 8.812703478349773E-10 -4.416390719478245E-11 2.403935214241485E-10 -9.703327482101159E-11
q 4.766309606993824E-11 1.113069080942271E-10 -2.35034725428476E-8 -8.747893371297634E-11 -3.18358287667787E-9 2.558760331598221E-10
tp 8.812703478349773E-10 -2.35034725428476E-8 6.924695524887685E-6 1.755492417892645E-8 9.42501534380165E-7 -8.090347136772748E-8
node -4.416390719478245E-11 -8.747893371297634E-11 1.755492417892645E-8 2.206608325261155E-10 2.324874575927568E-9 -2.78470192716232E-10
peri 2.403935214241485E-10 -3.18358287667787E-9 9.42501534380165E-7 2.324874575927568E-9 1.286744152313304E-7 -1.113618922134426E-8
i -9.703327482101159E-11 2.558760331598221E-10 -8.090347136772748E-8 -2.78470192716232E-10 -1.113618922134426E-8 3.570936479294679E-9

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 6.3   0.5 16 from 463 observations, assumed slope, autocmod 2.9e
comet total magnitude slope K1 10.   n/a 16 autocmod 2.9e
comet nuclear magnitude M2 9.6   0.4 16 from 29 observations, autocmod 2.9e
comet nuclear magnitude slope K2 5.   n/a 16 autocmod 2.9e
comet nuclear phase coefficient PC 0.03   n/a 16 autocmod 2.9e
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]
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