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C/2012 F6 (Lemmon)
Classification: Comet          SPK-ID: 1003183
Ephemeris | Orbit Diagram | Orbital Elements | 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 2456502.5 (2013-Jul-29.0) TDB
Reference: JPL 78 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9984987106785107 3.1602e-07  
a 487.0734873183327 0.10247 au
q .7312382252915651 1.7011e-07 au
i 82.60885369092976 1.1906e-05 deg
node 332.7152783992307 1.8367e-05 deg
peri 304.9869130308352 1.1401e-05 deg
M .0115972492545341 3.6603e-06 deg
tp 2456376.013943361022
(2013-Mar-24.51394336)
2.2694e-05 TDB
period 3926360.414494806
10749.79
1239.1
3.392
d
yr
n 9.168796595213233E-5 2.8935e-08 deg/d
Q 973.4157364113739 0.20479 au
  Orbit Determination Parameters
   # obs. used (total)      3223  
   data-arc span      995 days (2.72 yr)  
   first obs. used      2012-01-22  
   last obs. used      2014-10-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   norm. resid. RMS      .52007  
   source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-10 12:40:05  

Additional Information
 Earth MOID = .0723709 au 
 T_jup = 0.147 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 5.5   1. 78 2 parameter fit from 297 observations, autocmod 2.6
comet total magnitude slope K1 15.   n/a 78 autocmod 2.6
comet nuclear magnitude M2 11.1   0.8 78 from 2738 observations, autocmod 2.6
comet nuclear magnitude slope K2 5.   n/a 78 autocmod 2.6
comet nuclear phase coefficient PC 0.03   n/a 78 autocmod 2.6

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2013.2   C/2012 F6       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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