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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 2456501.5 (2013-Jul-28.0) TDB
Reference: JPL 72 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9984990389110348 3.1733e-07  
a 487.1800953949827 0.10294 AU
q .7312383665062462 1.7043e-07 AU
i 82.60884754018649 1.1945e-05 deg
node 332.7152695966889 1.8409e-05 deg
peri 304.9869342730737 1.1402e-05 deg
M .01150178320232885 3.6459e-06 deg
tp 2456376.013961958258
(2013-Mar-24.51396196)
2.2694e-05 JED
period 3927649.556625291
10753.32
1244.9
3.408
d
yr
n 9.165787191801264E-5 2.9051e-08 deg/d
Q 973.6289524234592 0.20573 AU
  Orbit Determination Parameters
   # obs. used (total)      3219  
   data-arc span      941 days (2.58 yr)  
   first obs. used      2012-01-22  
   last obs. used      2014-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   fit RMS      .51669  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-24 20:14:58  

Additional Information
 Earth MOID = .072342 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. 72 2 parameter fit from 297 observations, autocmod 2.5c
comet total magnitude slope K1 15.   n/a 72 autocmod 2.5c
comet nuclear magnitude M2 11.1 mag 0.8 72 from 2730 observations, autocmod 2.5c
comet nuclear magnitude slope K2 5.   n/a 72 autocmod 2.5c
comet nuclear phase coefficient PC 0.03   n/a 72 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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