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C/2020 F2 (ATLAS)
Classification: Hyperbolic Comet          SPK-ID: 1003666
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459160.5 (2020-Nov-07.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.002558126568231 1.8331e-05  
a -3446.603094832273 24.692 au
q 8.816846947037858 4.1673e-05 au
i 163.5755051624089 6.2293e-05 deg
node 250.2510068659777 7.733e-05 deg
peri 48.37504460720157 0.00073499 deg
M -.003003858901172644 3.228e-05 deg
tp 2459777.183552381080
(2022-Jul-16.68355238)
0.012036 TDB
period n/a
n/a
n/a
n/a
d
yr
n 4.870989163849805E-6 5.2345e-08 deg/d
Q n/a n/a au
  Orbit Determination Parameters
   # obs. used (total)      707  
   data-arc span      818 days (2.24 yr)  
   first obs. used      2019-05-27  
   last obs. used      2021-08-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .38351  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Sep-04 23:43:02  

Additional Information
 Earth MOID = 7.83949 au 
 Jupiter MOID = 3.58738 au 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e 3.360091222318601E-10 2.259640418035284E-10 -4.263851840812343E-10 8.339127599388035E-11 1.029079662392143E-9 3.676426151777267E-11
q 2.259640418035284E-10 1.736627573204753E-9 -4.696485146943727E-7 7.356573637418195E-11 -2.798984492313983E-8 2.353048712797154E-11
tp -4.263851840812343E-10 -4.696485146943727E-7 .000144854034328185 -3.230978049654722E-9 8.762379575251432E-6 1.043385488917995E-9
node 8.339127599388035E-11 7.356573637418195E-11 -3.230978049654722E-9 5.979869273799347E-9 5.748150637255682E-9 4.222450494912295E-9
peri 1.029079662392143E-9 -2.798984492313983E-8 8.762379575251432E-6 5.748150637255682E-9 5.402132750897727E-7 4.209256960297724E-9
i 3.676426151777267E-11 2.353048712797154E-11 1.043385488917995E-9 4.222450494912295E-9 4.209256960297724E-9 3.880369774234308E-9

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 6.3   0.6 25 from 678 observations, assumed slope, autocmod 2.9e
comet total magnitude slope K1 7.5   n/a 25 autocmod 2.9e
comet nuclear magnitude M2 8.9   0.3 25 from 7 observations, autocmod 2.9e
comet nuclear magnitude slope K2 5.   n/a 25 autocmod 2.9e
comet nuclear phase coefficient PC 0.03   n/a 25 autocmod 2.9e
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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