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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 2456492.5 (2013-Jul-19.0) TDB
Reference: JPL 61 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9985012824865925 3.0615e-07  
a 487.9103423295644 0.099619 AU
q .7312397750219503 1.5034e-07 AU
i 82.60879915275925 1.1589e-05 deg
node 332.7152057377935 1.7478e-05 deg
peri 304.9871141025563 1.0652e-05 deg
M .0106528867141081 3.2631e-06 deg
tp 2456376.014123795257
(2013-Mar-24.51412380)
2.0909e-05 JED
period 3936483.749345724
10777.51
1205.6
3.301
d
yr
n 9.145217481460072E-5 2.8008e-08 deg/d
Q 975.0894448841068 0.19909 AU
  Orbit Determination Parameters
   # obs. used (total)      3144  
   data-arc span      805 days (2.20 yr)  
   first obs. used      2012-01-22  
   last obs. used      2014-04-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   fit RMS      .51696  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 13:33:33  

Additional Information
 Earth MOID = .0719648 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. 61 2 parameter fit from 297 observations, autocmod 2.5c
comet total magnitude slope K1 15.   n/a 61 autocmod 2.5c
comet nuclear magnitude M2 11.1 mag 0.8 61 from 2658 observations, autocmod 2.5c
comet nuclear magnitude slope K2 5.   n/a 61 autocmod 2.5c
comet nuclear phase coefficient PC 0.03   n/a 61 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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