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C/2019 Y4-C (ATLAS)
Classification: Hyperbolic Comet          SPK-ID: 1003674
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458951.5 (2020-Apr-12.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.001737081173832 0.00022506  
a -145.1914630493211 18.84 au
q .252209357064097 5.3126e-05 au
i 45.57221417930071 0.015075 deg
node 120.6318347256435 0.0049087 deg
peri 177.2933526849599 0.0095515 deg
M -.02760641018436185 0.0053721 deg
tp 2459000.502415106098
(2020-May-31.00241511)
0.0021221 TDB
period n/a
n/a
n/a
n/a
d
yr
n .0005633683589796461 0.00010965 deg/d
Q n/a n/a au
  Orbit Determination Parameters
   # obs. used (total)      425  
   data-arc span      26 days  
   first obs. used      2020-04-06  
   last obs. used      2020-05-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   norm. resid. RMS      .98768  
   source      ORB  
   producer      Davide Farnocchia  
   solution date      2020-Jun-17 10:03:29  

Additional Information
 Earth MOID = .6328 au 
 Jupiter MOID = 1.40954 au 
 T_jup = 0.677 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 14.3   1. 7 2 parameter fit from 322 observations, autocmod 2.8
comet total magnitude slope K1 4.5   n/a 7 autocmod 2.8
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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