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C/2011 W3 (Lovejoy)
Classification: Comet          SPK-ID: 1003162
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2455901.5 (2011-Dec-06.0) TDB
Reference: JPL 58 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9999294152687143 2.236e-07  
a 78.68293963959538 0.24975 AU
q .005553814151232848 1.0909e-07 AU
i 134.3558107377023 0.0018036 deg
node 326.3691470244605 0.0041876 deg
peri 53.50921241435645 0.0030657 deg
M 359.9858617465071 6.7391e-05 deg
tp 2455911.511809000032
(2011-Dec-16.01180900)
6.2161e-05 JED
period 254929.0293747837
697.96
1213.8
3.323
d
yr
n .001412157732224157 6.7235e-06 deg/d
Q 157.3603254650395 0.49948 AU
  Orbit Determination Parameters
   # obs. used (total)      123  
   data-arc span      40 days  
   first obs. used      2011-11-27  
   last obs. used      2012-01-06  
   planetary ephem.      DE406  
   SB-pert. ephem.      SB406-CPV-2  
   condition code      4  
   fit RMS      .63468  
   data source      ORB  
   producer      Paul W. Chodas  
   solution date      2012-Jun-04 12:31:54  

Additional Information
 Earth MOID = .490179 AU 
 T_jup = 0.002 
[ 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 15.3 mag 0.9 58 from 52 observations, assumed slope (user-specifi, autocmod 2.5b
comet total magnitude slope K1 9.3   n/a 58 autocmod 2.5b
comet nuclear magnitude M2 20.6 mag 1. 58 from 43 observations, autocmod 2.5b
comet nuclear magnitude slope K2 5.   n/a 58 autocmod 2.5b
comet nuclear phase coefficient PC 0.03   n/a 58 autocmod 2.5b

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2012.0   C/2011 W3       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]
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