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C/2020 M3 (ATLAS)
Classification: Halley-type Comet* [NEO]          SPK-ID: 1003699
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

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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.


Orbital Elements at Epoch 2459177.5 (2020-Nov-24.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9527081906494299 2.5212e-06  
a 26.81750366670874 0.0014408 au
q 1.268248270664204 5.3817e-07 au
i 23.47352820457694 2.9303e-05 deg
node 71.25023541309541 9.9353e-06 deg
peri 328.4462512103037 1.7028e-05 deg
M .2084835479574227 1.6832e-05 deg
tp 2459148.123825566461
(2020-Oct-25.62382557)
1.878e-05 TDB
period 50725.45483653124
138.88
4.0879
0.01119
d
yr
n .00709702852660745 5.7194e-07 deg/d
Q 52.36675906275327 0.0028134 au
  Orbit Determination Parameters
   # obs. used (total)      2140  
   data-arc span      265 days  
   first obs. used      2020-06-27  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      3  
   norm. resid. RMS      .48834  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:34:09  

Additional Information
 Earth MOID = .327377 au 
 Jupiter MOID = .886293 au 
 T_jup = 1.460 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 14.6   0.9 18 2 parameter fit from 1718 observations, autocmod 2.9c
comet total magnitude slope K1 6.5   n/a 18 autocmod 2.9c

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2020.8   C/2020 M3       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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