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146P/Shoemaker-LINEAR
Classification: Jupiter-family Comet          SPK-ID: 1000084
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
:
Orbital Elements at Epoch 2456472.5 (2013-Jun-29.0) TDB
Reference: JPL K163/2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .646726656289458 4.9806e-07  
a 4.035881102540044 3.8582e-07 au
q 1.42576921191251 2.0498e-06 au
i 23.09409337090814 4.8745e-05 deg
node 53.44724388498319 8.7356e-05 deg
peri 317.0689507155134 0.00012124 deg
M 226.6997527441728 2.4789e-05 deg
tp 2457569.065116529103
(2016-Jun-29.56511653)
0.00015589 TDB
period 2961.460688012491
8.11
0.00042466
1.163e-06
d
yr
n .1215616339116778 1.7432e-08 deg/d
Q 6.645992993167578 6.3534e-07 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 2.293549499821507E-9 1.978E-10
A2 [EST] -3.310222057125959E-10 7.802E-12
  Orbit Determination Parameters
   # obs. used (total)      173  
   data-arc span      5942 days (16.27 yr)  
   first obs. used      2000-09-27  
   last obs. used      2017-01-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   norm. resid. RMS      .78486  
   source      ORB  
   producer      Davide Farnocchia  
   solution date      2017-Mar-09 16:08:12  

Additional Information
 Earth MOID = .500379 au 
 Jupiter MOID = .36936 au 
 T_jup = 2.525 
[ 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 13.5   1. K163/2 2 parameter fit from 64 observations, autocmod 2.6h
comet total magnitude slope K1 16.   n/a K163/2 autocmod 2.6h
comet nuclear magnitude M2 17.3   0.7 K163/2 from 62 observations, autocmod 2.6h
comet nuclear magnitude slope K2 5.   n/a K163/2 autocmod 2.6h
comet nuclear phase coefficient PC 0.03   n/a K163/2 autocmod 2.6h

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2000.3   146P/2000 S2       
 1984.1   146P/1984 W1   1984 XVIII   1984u 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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