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145P/Shoemaker-Levy 5
Classification: Jupiter-family Comet          SPK-ID: 1000135
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457082.5 (2015-Mar-01.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5409816441137831 1.638e-07  
a 4.142757956165335 1.8662e-07 au
q 1.901601945873556 7.2605e-07 au
i 11.26421316712802 1.3073e-05 deg
node 26.8407589503334 7.0014e-05 deg
peri 10.4203090132918 9.0909e-05 deg
M 253.0668774053684 2.1841e-05 deg
tp 2457997.334459847375
(2017-Aug-31.83445985)
0.00016249 TDB
period 3079.872705050781
8.43
0.00020811
5.698e-07
d
yr
n .1168879478069417 7.8984e-09 deg/d
Q 6.383913966457114 2.8758e-07 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] -1.119043111802938E-9 3.496E-10
A2 [EST] -1.298710710220048E-10 8.908E-12
  Orbit Determination Parameters
   # obs. used (total)      880  
   data-arc span      9741 days (26.67 yr)  
   first obs. used      1991-09-12  
   last obs. used      2018-05-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55495  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 11:13:17  

Additional Information
 Earth MOID = .909833 au 
 Jupiter MOID = .240256 au 
 T_jup = 2.728 
[ 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 13.4   0.9 31 2 parameter fit from 270 observations, autocmod 2.8
comet total magnitude slope K1 8.25   n/a 31 autocmod 2.8

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2000.8   145P/2000 R1       
 1992.4   145P/1991 T1   1991 XXII   1991z 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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