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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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9527080273502783 2.4949e-06  
a 26.81741018963366 0.0014257 au
q 1.268248229224524 5.3236e-07 au
i 23.47352564843428 2.8952e-05 deg
node 71.25023502197875 9.8975e-06 deg
peri 328.4462487496546 1.6976e-05 deg
M .2084846565855813 1.6656e-05 deg
tp 2459148.123822950607
(2020-Oct-25.62382295)
1.8727e-05 TDB
period 50725.18961816431
138.88
4.0452
0.01108
d
yr
n .00709706563366077 5.6597e-07 deg/d
Q 52.3665721500428 0.002784 au
  Orbit Determination Parameters
   # obs. used (total)      2147  
   data-arc span      279 days  
   first obs. used      2020-06-27  
   last obs. used      2021-04-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      3  
   norm. resid. RMS      .49129  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-02 23:42:49  

Additional Information
 Earth MOID = .327377 au 
 Jupiter MOID = .886292 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 19 2 parameter fit from 1725 observations, autocmod 2.9c
comet total magnitude slope K1 6.25   n/a 19 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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