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155P/Shoemaker 3
Classification: Jupiter-family Comet          SPK-ID: 1000085
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2455699.5 (2011-May-18.0) TDB
Reference: JPL 50 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7261005518691835 1.397e-07  
a 6.594362034572677 4.1953e-08 au
q 1.806192122044264 9.2616e-07 au
i 6.398038753694579 8.6588e-06 deg
node 97.2760884519534 7.3714e-05 deg
peri 14.60209418470458 0.00012799 deg
M 179.4349225184292 1.1933e-05 deg
tp 2452616.581262434128
(2002-Dec-08.08126243)
0.00021584 TDB
period 6185.25496568108
16.93
5.9025e-05
1.616e-07
d
yr
n .05820293617602863 5.5543e-10 deg/d
Q 11.38253194710109 7.2415e-08 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 5.613902333582096E-9 4.382E-10
A2 [EST] -8.070803261707224E-10 1.707E-12
  Orbit Determination Parameters
   # obs. used (total)      1966  
   data-arc span      12550 days (34.36 yr)  
   first obs. used      1986-01-10  
   last obs. used      2020-05-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .68894  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-17 23:13:47  

Additional Information
 Earth MOID = .824998 au 
 Jupiter MOID = .301695 au 
 T_jup = 2.328 
[ 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.   n/a ICQ 2003 Handbook  
comet total magnitude slope K1 12.0   n/a ICQ 2003 Handbook  

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2002.9   155P/2002 R2       
 1986.0   155P/1986 A1   1985 XVIII   1986a 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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