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C/2020 S3 (Erasmus)
Classification: Comet          SPK-ID: 1003724
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 2459138.5 (2020-Oct-16.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9978439114187564 5.99e-05  
a 184.8198280534015 5.1498 au
q .3984879208533462 3.2858e-05 au
i 19.86113906668567 0.00021249 deg
node 222.998412704547 0.0015433 deg
peri 349.8846584570305 0.0054529 deg
M 359.9773779756259 0.00094565 deg
tp 2459196.170037641930
(2020-Dec-12.67003764)
0.00039798 TDB
period 917743.399429291
2512.64
38358
105
d
yr
n .0003922665095972034 1.6395e-05 deg/d
Q 369.2411681859497 10.288 au
  Orbit Determination Parameters
   # obs. used (total)      410  
   data-arc span      59 days  
   first obs. used      2020-09-17  
   last obs. used      2020-11-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   norm. resid. RMS      .66829  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-17 00:12:35  

Additional Information
 Earth MOID = .31544 au 
 Jupiter MOID = .583601 au 
 T_jup = 0.764 
[ 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 12.6   0.9 7 2 parameter fit from 289 observations, autocmod 2.8
comet total magnitude slope K1 14.75   n/a 7 autocmod 2.8
comet nuclear magnitude M2 14.8   0.1 7 from 6 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a 7 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a 7 autocmod 2.8

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2020.9   C/2020 S3       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]
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