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143P/Kowal-Mrkos
Classification: Jupiter-family Comet          SPK-ID: 1000057
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456437.5 (2013-May-25.0) TDB
Reference: JPL 81 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4086347353478541 7.6209e-08  
a 4.298410220403029 3.6464e-08 au
q 2.541930497572126 3.1491e-07 au
i 4.689430862049861 8.0398e-06 deg
node 245.3249252743519 0.00011183 deg
peri 320.8027094218869 0.00010954 deg
M 159.7222600326431 6.1926e-06 deg
tp 2454993.313891890546
(2009-Jun-10.81389189)
6.8107e-05 TDB
period 3255.069135718139
8.91
4.1419e-05
1.134e-07
d
yr
n .1105967292828563 1.4073e-09 deg/d
Q 6.054889943233932 5.1364e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1051  
   data-arc span      13376 days (36.62 yr)  
   first obs. used      1984-04-23  
   last obs. used      2020-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45327  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jan-14 17:13:17  

Additional Information
 Earth MOID = 1.54037 au 
 Jupiter MOID = .0185274 au 
 T_jup = 2.864 
[ 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 14.5   0.4 81 2 parameter fit from 582 observations, autocmod 2.8
comet total magnitude slope K1 4.5   n/a 81 autocmod 2.8

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2000.5   143P/2000 ET90       
 1982.7   143P/1984 H1   1984 X   1984n 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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