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JPL Small-Body Database Browser
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391P/Kowalski
Classification: Jupiter-family Comet          SPK-ID: 1002328
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2454528.5 (2008-Mar-03.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1207003718262755 1.0599e-06  
a 4.684865799125163 1.2071e-06 au
q 4.119400755214555 3.9435e-06 au
i 21.27035725869958 2.157e-05 deg
node 124.7583880560744 0.00012067 deg
peri 186.8763998217004 0.0003917 deg
M 1.174197441916018 0.00031183 deg
tp 2454516.419559013028
(2008-Feb-19.91955901)
0.0032071 TDB
period 3703.771273946423
10.14
0.0014314
3.919e-06
d
yr
n .09719822671890176 3.7565e-08 deg/d
Q 5.250330843035772 1.3528e-06 au
  Orbit Determination Parameters
   # obs. used (total)      249  
   data-arc span      5341 days (14.62 yr)  
   first obs. used      2005-05-10  
   last obs. used      2019-12-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      1  
   norm. resid. RMS      .70291  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-09 08:46:24  

Additional Information
 Earth MOID = 3.10423 au 
 Jupiter MOID = .0473735 au 
 T_jup = 2.866 
[ 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 13.2   1. 27 2 parameter fit from 92 observations, autocmod 2.8
comet total magnitude slope K1 4.5   n/a 27 autocmod 2.8

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2018.3   391P/2019 U2       
 2008.1   391P/2006 F1       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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