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C/2019 Y4 (ATLAS)
Classification: Comet          SPK-ID: 1003655
[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458915.5 (2020-Mar-07.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9992352330367696 3.7667e-06  
a 330.6077016659887 1.6252 au
q .2528378480236659 2.5261e-06 au
i 45.38387091906765 0.0011584 deg
node 120.5720880573815 0.0010806 deg
peri 177.4083971162164 0.00066931 deg
M 359.986060813443 0.00010277 deg
tp 2459000.516418681581
(2020-May-31.01641868)		 0.00020507 TDB
period 2195674.087587547
6011.43		 16190
44.33		 d
yr
n .0001639587596515942 1.209e-06 deg/d
Q 660.9625654839537 3.2491 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 2.855296209582064E-7 1.656E-8
A2 [EST] -9.07343291903086E-9 1.163E-8
   Orbit Determination Parameters
   # obs. used (total)      1250  
   data-arc span      115 days  
   first obs. used      2019-12-20  
   last obs. used      2020-04-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   norm. resid. RMS      .33082  
   source      ORB  
   producer      Davide Farnocchia  
   solution date      2020-Apr-14 11:23:28  

Additional Information
 Earth MOID = .631177 au 
 Jupiter MOID = 1.39373 au 
 T_jup = 0.454 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 11.3   1. 13 2 parameter fit from 1696 observations, autocmod 2.8
comet total magnitude slope K1 11.   n/a 13 autocmod 2.8

Alternate Designations
 Perihelion 
Year (est.)		  New-Style 
Desig		 Roman
 Numeral 		 Year/
 Letter 
 2020.4   C/2019 Y4       
[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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