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C/2012 F6 (Lemmon)
Classification: Comet          SPK-ID: 1003183
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456500.5 (2013-Jul-27.0) TDB
Reference: JPL 71 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9984993715022262 3.1831e-07  
a 487.2881657628733 0.10331 AU
q .7312385081716767 1.7067e-07 AU
i 82.60884317045907 1.1974e-05 deg
node 332.7152630647461 1.8441e-05 deg
peri 304.9869554588927 1.1402e-05 deg
M .01140632806356236 3.6278e-06 deg
tp 2456376.013980348197
(2013-Mar-24.51398035)
2.2694e-05 JED
period 3928956.525265215
10756.90
1249.4
3.421
d
yr
n 9.162738189771622E-5 2.9138e-08 deg/d
Q 973.845093017575 0.20646 AU
  Orbit Determination Parameters
   # obs. used (total)      3216  
   data-arc span      921 days (2.52 yr)  
   first obs. used      2012-01-22  
   last obs. used      2014-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   fit RMS      .51419  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 13:50:33  

Additional Information
 Earth MOID = .0723041 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 mag 1. 71 2 parameter fit from 297 observations, autocmod 2.5c
comet total magnitude slope K1 15.   n/a 71 autocmod 2.5c
comet nuclear magnitude M2 11.1 mag 0.8 71 from 2726 observations, autocmod 2.5c
comet nuclear magnitude slope K2 5.   n/a 71 autocmod 2.5c
comet nuclear phase coefficient PC 0.03   n/a 71 autocmod 2.5c

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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