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154P/Brewington
Classification: Jupiter-family Comet          SPK-ID: 1000143
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
:
Orbital Elements at Epoch 2456216.5 (2012-Oct-16.0) TDB
Reference: JPL K132/1 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6707084350744681 1.0658e-07  
a 4.883412066493323 7.0332e-08 au
q 1.608066401551812 5.2034e-07 au
i 17.82971603463223 1.3661e-05 deg
node 343.5032204168225 1.6573e-05 deg
peri 48.98875093603971 6.2679e-05 deg
M 321.4214937546069 8.6986e-06 deg
tp 2456638.902414362428
(2013-Dec-12.40241436)
9.9132e-05 TDB
period 3941.699250956176
10.79
8.5154e-05
2.331e-07
d
yr
n .09133116888932388 1.9731e-09 deg/d
Q 8.158757731434834 1.175e-07 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 2.901437541535741E-8 1.734E-10
A2 [EST] -2.019198959471491E-9 1.679E-10
A3 [EST] -9.646141540719979E-9 1.431E-10
  Orbit Determination Parameters
   # obs. used (total)      2931  
   data-arc span      4582 days (12.54 yr)  
   first obs. used      2002-07-07  
   last obs. used      2015-01-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   norm. resid. RMS      .6164  
   source      ORB  
   producer      Davide Farnocchia  
   solution date      2017-Jan-24 16:46:01  

Additional Information
 Earth MOID = .667188 au 
 Jupiter MOID = .324695 au 
 T_jup = 2.434 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 10.7   1. K132/1 2 parameter fit from 380 observations, autocmod 2.6h
comet total magnitude slope K1 17.   n/a K132/1 autocmod 2.6h
comet nuclear magnitude M2 15.3   0.7 K132/1 from 2348 observations, autocmod 2.6h
comet nuclear magnitude slope K2 5.   n/a K132/1 autocmod 2.6h
comet nuclear phase coefficient PC 0.03   n/a K132/1 autocmod 2.6h

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2003.2   154P/2002 Q4       
 1992.4   154P/1992 Q1   1992 XIV   1992p 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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