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C/2007 E2 (Lovejoy)
Classification: Comet          SPK-ID: 1002449
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2454235.5 (2007-May-15.0) TDB
Reference: JPL 48 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9991803423063073 3.3298e-05  
a 1333.408826936133 54.173 AU
q 1.092938803836017 3.6948e-06 AU
i 95.88296486086807 0.00033913 deg
node 232.4318674419277 0.00020078 deg
peri 340.533898322941 0.00071778 deg
M .0009817259831152794 5.9841e-05 deg
tp 2454187.001176860013
(2007-Mar-27.50117686)
0.00067182 JED
period 17784571.89753847
48691.50
1.0838e+06
2967
d
yr
n 2.024226402941006E-5 1.2336e-06 deg/d
Q 2665.724715068429 108.3 AU
  Orbit Determination Parameters
   # obs. used (total)      1656  
   data-arc span      158 days  
   first obs. used      2007-03-18  
   last obs. used      2007-08-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   fit RMS      .65173  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-13 19:43:55  

Additional Information
 Earth MOID = .112833 AU 
 T_jup = -0.129 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 10.9 mag 1. 48 from 167 observations, assumed slope, autocmod 2.5c
comet total magnitude slope K1 17.   n/a 48 autocmod 2.5c
comet nuclear magnitude M2 16.1 mag 0.8 48 from 1192 observations, autocmod 2.5c
comet nuclear magnitude slope K2 5.   n/a 48 autocmod 2.5c
comet nuclear phase coefficient PC 0.03   n/a 48 autocmod 2.5c

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2007.2   C/2007 E2       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]
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