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C/2020 M5 (ATLAS)
Classification: Comet          SPK-ID: 1003701
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 2459042.5 (2020-Jul-12.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .999436432797626 2.3453e-05  
a 5331.432070682091 221.88 au
q 3.004620256721589 3.0393e-05 au
i 93.22286499611012 0.00012059 deg
node 352.0985094204636 0.00014582 deg
peri 126.337184298577 0.00080441 deg
M 359.9989773336794 6.3851e-05 deg
tp 2459446.420318250607
(2021-Aug-19.92031825)
0.0041368 TDB
period 142188426.1137663
389290.69
8.8762e+06
2.43e+04
d
yr
n 2.531851641088991E-6 1.5805e-07 deg/d
Q 10659.85952110746 443.63 au
  Orbit Determination Parameters
   # obs. used (total)      270  
   data-arc span      406 days (1.11 yr)  
   first obs. used      2019-08-10  
   last obs. used      2020-09-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   norm. resid. RMS      .43283  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Sep-24 20:18:34  

Additional Information
 Earth MOID = 2.32863 au 
 Jupiter MOID = 1.56319 au 
 T_jup = -0.120 
[ 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 6.8   0.5 4 from 254 observations, assumed slope, autocmod 2.8
comet total magnitude slope K1 13.25   n/a 4 autocmod 2.8
comet nuclear magnitude M2 13.0   0.3 4 from 9 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a 4 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a 4 autocmod 2.8

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2021.6   C/2020 M5       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]
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