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C/2019 T4 (ATLAS)
Classification: Comet          SPK-ID: 1003644
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2458940.5 (2020-Apr-01.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9960774581900187 2.4326e-05  
a 1081.286279027263 6.7025 au
q 4.24139063804355 5.1257e-05 au
i 53.61627006219437 2.0477e-05 deg
node 199.9777120631382 0.00021659 deg
peri 351.2073827894317 0.00073217 deg
M 359.9778454847291 0.00020619 deg
tp 2459739.725287492513
(2022-Jun-09.22528749)
0.0074391 TDB
period 12987018.67219712
35556.52
1.2075e+05
330.6
d
yr
n 2.771998786532089E-5 2.5774e-07 deg/d
Q 2158.331167416482 13.379 au
  Orbit Determination Parameters
   # obs. used (total)      230  
   data-arc span      646 days (1.77 yr)  
   first obs. used      2019-02-05  
   last obs. used      2020-11-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   norm. resid. RMS      .35314  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-17 00:12:32  

Additional Information
 Earth MOID = 3.24775 au 
 Jupiter MOID = 1.17534 au 
 T_jup = 1.518 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 6.3   0.6 16 from 202 observations, assumed slope, autocmod 2.8
comet total magnitude slope K1 8.   n/a 16 autocmod 2.8
comet nuclear magnitude M2 9.3   0.4 16 from 10 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a 16 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a 16 autocmod 2.8

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2022.4   C/2019 T4       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]
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