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C/2019 Y4-A (ATLAS)
Classification: Hyperbolic Comet          SPK-ID: 1003673
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458948.5 (2020-Apr-09.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.002209521213027 0.00011426  
a -113.3043482048461 5.8967 au
q .2503483608868151 8.4028e-05 au
i 45.98190846135657 0.020226 deg
node 121.0466187320116 0.015298 deg
peri 177.184327522225 0.0076806 deg
M -.04253296509178575 0.0033208 deg
tp 2459000.546490578544
(2020-May-31.04649058)
0.00078091 TDB
period n/a
n/a
n/a
n/a
d
yr
n .0008172110092149005 6.3796e-05 deg/d
Q n/a n/a au
  Orbit Determination Parameters
   # obs. used (total)      593  
   data-arc span      27 days  
   first obs. used      2020-03-23  
   last obs. used      2020-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   norm. resid. RMS      .89255  
   source      ORB  
   producer      Davide Farnocchia  
   solution date      2020-Jun-02 11:59:49  

Additional Information
 Earth MOID = .635242 au 
 Jupiter MOID = 1.41078 au 
[ 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   2. 6 2 parameter fit from 352 observations, autocmod 2.8
comet total magnitude slope K1 4.5   n/a 6 autocmod 2.8
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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