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C/2021 C3 (Catalina)
Classification: Comet          SPK-ID: 1003766
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459288.5 (2021-Mar-15.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9640485673680309 7.0695e-05  
a 63.32157564374997 0.12491 au
q 2.276501360906412 1.4217e-05 au
i 122.1613987364859 0.00047698 deg
node 181.9197780127483 0.00012232 deg
peri 357.1518371620405 0.00058446 deg
M .05976892811534477 0.00017929 deg
tp 2459257.943826810960
(2021-Feb-12.44382681)
0.0014967 TDB
period 184045.8361044333
503.89
544.57
1.491
d
yr
n .001956034472824068 5.7877e-06 deg/d
Q 124.3666499265935 0.24533 au
  Orbit Determination Parameters
   # obs. used (total)      363  
   data-arc span      144 days  
   first obs. used      2021-01-16  
   last obs. used      2021-06-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      4  
   norm. resid. RMS      .53515  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-01 22:12:57  

Additional Information
 Earth MOID = 1.2804 au 
 Jupiter MOID = 3.17418 au 
 T_jup = -0.905 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 16.1   0.6 7 2 parameter fit from 338 observations, autocmod 2.9c
comet total magnitude slope K1 4.5   n/a 7 autocmod 2.9c

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2021.1   C/2021 C3       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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