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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 
[ hide covariance matrix ]
Orbit Covariance (8×8)
  e q tp node peri i A1 A2
e 2.682892523961342E-14 -1.183107176253848E-13 -9.206059559406594E-13 -6.209494440889518E-15 -3.06765746735026E-13 9.694610428778475E-14 4.316461910589958E-17 -8.09865132717783E-19
q -1.183107176253848E-13 5.271537448908679E-13 5.625120026548702E-13 -2.940970902805149E-13 -7.918888710826858E-13 -4.46932321747377E-13 -2.041550166072659E-16 4.087344839114337E-18
tp -9.206059559406594E-13 5.625120026548702E-13 2.640207088398792E-8 1.786275667665598E-10 9.430058478746067E-9 -2.895698991641189E-10 -6.47729187172956E-15 -5.100076161527398E-16
node -6.209494440889518E-15 -2.940970902805149E-13 1.786275667665598E-10 4.9019852997679E-9 -4.644588098206963E-9 6.149644751292378E-10 1.16064948338929E-15 -7.889296047094186E-18
peri -3.06765746735026E-13 -7.918888710826858E-13 9.430058478746067E-9 -4.644588098206963E-9 8.264415086050759E-9 -6.838025419138482E-10 5.877790952487528E-16 -2.962641942493954E-16
i 9.694610428778475E-14 -4.46932321747377E-13 -2.895698991641189E-10 6.149644751292378E-10 -6.838025419138482E-10 1.708934147079623E-10 5.205277869206894E-16 -9.778496442154762E-18
A1 4.316461910589958E-17 -2.041550166072659E-16 -6.47729187172956E-15 1.16064948338929E-15 5.877790952487528E-16 5.205277869206894E-16 1.222452584859921E-19 -2.651975098228942E-21
A2 -8.09865132717783E-19 4.087344839114337E-18 -5.100076161527398E-16 -7.889296047094186E-18 -2.962641942493954E-16 -9.778496442154762E-18 -2.651975098228942E-21 7.935920367908794E-23

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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