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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 TDB
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  
   norm. resid. RMS      .65173  
   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   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   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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