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C/2021 C6 (Lemmon)
Classification: Hyperbolic Comet          SPK-ID: 1003770
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 2459283.5 (2021-Mar-10.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.001969271851109 0.00019332  
a -1661.080865808095 162.97 au
q 3.271119791451759 0.00019564 au
i 164.6254596221091 0.00049958 deg
node 332.1557857887023 0.0010681 deg
peri 203.5754362771121 0.0084303 deg
M -.003615995848947221 0.00053168 deg
tp 2459531.876219638664
(2021-Nov-13.37621964)
0.033275 TDB
period n/a
n/a
n/a
n/a
d
yr
n 1.455854289999158E-5 2.1425e-06 deg/d
Q n/a n/a au
  Orbit Determination Parameters
   # obs. used (total)      151  
   data-arc span      135 days  
   first obs. used      2021-01-23  
   last obs. used      2021-06-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .51333  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-01 22:12:57  

Additional Information
 Earth MOID = 2.29351 au 
 Jupiter MOID = 1.02449 au 
[ 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 15.5   0.5 5 2 parameter fit from 127 observations, autocmod 2.9c
comet total magnitude slope K1 4.5   n/a 5 autocmod 2.9c
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]
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