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C/2020 Y3 (ATLAS)
Classification: Comet          SPK-ID: 1003755
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459263.5 (2021-Feb-18.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .986775912507285 2.2518e-05  
a 151.1820846962348 0.2583 au
q 1.999245115354055 1.2473e-05 au
i 83.09695582733269 0.00021742 deg
node 191.4267565738953 0.00014453 deg
peri 342.0437395269306 0.00072361 deg
M .04056887327494348 0.00010465 deg
tp 2459186.986271291703
(2020-Dec-03.48627129)
0.0013843 TDB
period 678967.3981899684
1858.91
1740.1
4.764
d
yr
n .000530216916098931 1.3588e-06 deg/d
Q 300.3649242771156 0.51318 au
  Orbit Determination Parameters
   # obs. used (total)      347  
   data-arc span      123 days  
   first obs. used      2020-12-28  
   last obs. used      2021-04-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .60477  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-02 23:42:50  

Additional Information
 Earth MOID = 1.03264 au 
 Jupiter MOID = 3.38129 au 
 T_jup = 0.244 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 14.6   0.5 6 2 parameter fit from 314 observations, autocmod 2.9c
comet total magnitude slope K1 6.75   n/a 6 autocmod 2.9c

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2020.9   C/2020 Y3       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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