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

[ hide orbit diagram ]

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 2459271.5 (2021-Feb-26.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.002407564881877 1.9644e-05  
a -2019.606987199173 16.476 au
q 4.862334857574344 2.3859e-05 au
i 71.74737915228732 7.967e-05 deg
node 256.7557988543291 2.0621e-05 deg
peri 10.27684174598624 0.00076646 deg
M -.001991278437397908 2.4368e-05 deg
tp 2459454.869969996371
(2021-Aug-28.36997000)
0.0053739 TDB
period n/a
n/a
n/a
n/a
d
yr
n 1.085934865691103E-5 1.3288e-07 deg/d
Q n/a n/a au
  Orbit Determination Parameters
   # obs. used (total)      297  
   data-arc span      340 days  
   first obs. used      2020-07-23  
   last obs. used      2021-06-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .42463  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-01 22:12:50  

Additional Information
 Earth MOID = 3.86084 au 
 Jupiter MOID = .4115 au 
 T_jup = 0.856 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e 3.858877074363735E-10 1.335944092532702E-10 9.468062621871469E-10 1.181660443277739E-10 7.769587167038995E-10 -9.520242877604313E-10
q 1.335944092532702E-10 5.692454774747629E-10 -1.206202551672718E-7 1.57350441469227E-10 -1.704174376406825E-8 -5.457848733823838E-11
tp 9.468062621871469E-10 -1.206202551672718E-7 2.887906642507638E-5 -2.559460478354534E-8 4.112353072910227E-6 -7.376545211008405E-8
node 1.181660443277739E-10 1.57350441469227E-10 -2.559460478354534E-8 4.252263680782396E-10 -3.605921086425487E-9 -8.385809253556665E-10
peri 7.769587167038995E-10 -1.704174376406825E-8 4.112353072910227E-6 -3.605921086425487E-9 5.874626572676209E-7 -1.175247048880821E-8
i -9.520242877604313E-10 -5.457848733823838E-11 -7.376545211008405E-8 -8.385809253556665E-10 -1.175247048880821E-8 6.347334070736145E-9

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 6.2   0.5 13 from 262 observations, assumed slope, autocmod 2.9c
comet total magnitude slope K1 10.25   n/a 13 autocmod 2.9c
comet nuclear magnitude M2 9.5   0.4 13 from 21 observations, autocmod 2.9c
comet nuclear magnitude slope K2 5.   n/a 13 autocmod 2.9c
comet nuclear phase coefficient PC 0.03   n/a 13 autocmod 2.9c
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]
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