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JPL Small-Body Database Browser
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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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5409816362750146 1.6316e-07  
a 4.142757958470263 1.865e-07 au
q 1.901601979405681 7.2357e-07 au
i 11.26421604225583 1.307e-05 deg
node 26.84077386097572 6.993e-05 deg
peri 10.42027692978917 9.076e-05 deg
M 253.0668819161457 2.1824e-05 deg
tp 2457997.334422020250
(2017-Aug-31.83442202)
0.00016237 TDB
period 3079.872707621128
8.43
0.00020797
5.694e-07
d
yr
n .1168879477093914 7.893e-09 deg/d
Q 6.383913937534844 2.8739e-07 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] -1.079237050724678E-9 3.488E-10
A2 [EST] -1.298139527190071E-10 8.9E-12
  Orbit Determination Parameters
   # obs. used (total)      881  
   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      .55644  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-May-26 20:53:18  

Additional Information
 Earth MOID = .909833 au 
 Jupiter MOID = .240257 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 13.5   0.9 30 2 parameter fit from 270 observations, autocmod 2.6n
comet total magnitude slope K1 8.   n/a 30 autocmod 2.6n

[ 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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