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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.


Orbital Elements at Epoch 2459078.5 (2020-Aug-17.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9995105563329261 1.1267e-05  
a 6138.776417230311 141.33 au
q 3.004585240996165 2.1411e-05 au
i 93.22241485552125 8.691e-05 deg
node 352.097952069952 0.00012682 deg
peri 126.3364543440795 0.00049636 deg
M 359.9992460921695 2.6038e-05 deg
tp 2459446.406028584438
(2021-Aug-19.90602858)
0.0016459 TDB
period 175679525.9819835
480984.33
6.0667e+06
1.661e+04
d
yr
n 2.049185856961608E-6 7.0765e-08 deg/d
Q 12274.54824921963 282.58 au
  Orbit Determination Parameters
   # obs. used (total)      420  
   data-arc span      504 days (1.38 yr)  
   first obs. used      2019-08-10  
   last obs. used      2020-12-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   norm. resid. RMS      .47808  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jan-14 17:13:07  

Additional Information
 Earth MOID = 2.32711 au 
 Jupiter MOID = 1.5633 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 5.4   0.5 8 2 parameter fit from 377 observations, autocmod 2.8
comet total magnitude slope K1 15.5   n/a 8 autocmod 2.8
comet nuclear magnitude M2 12.8   0.4 8 from 30 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a 8 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a 8 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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