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141P/Machholz 2
Classification: Jupiter-family Comet [NEO]          SPK-ID: 1003394
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
:
Orbital Elements at Epoch 2458672.5 (2019-Jul-08.0) TDB
Reference: JPL K202/4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7368116912670866 1.6024e-07  
a 3.054508410622358 9.0817e-08 au
q .8039109026021578 5.0983e-07 au
i 13.98002858262959 1.5675e-05 deg
node 241.876253511281 6.0144e-05 deg
peri 153.62607299 8.325e-05 deg
M 262.7190386746195 6.6155e-06 deg
tp 2459199.409183168973
(2020-Dec-15.90918317)
4.9394e-05 TDB
period 1949.891359588579
5.34
8.6961e-05
2.381e-07
d
yr
n .18462567067119 8.2339e-09 deg/d
Q 5.305105918642558 1.5773e-07 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 4.977864664476558E-10 1.833E-10
A2 [EST] -1.421588182072264E-9 5.805E-11
  Orbit Determination Parameters
   # obs. used (total)      819  
   data-arc span      2123 days (5.81 yr)  
   first obs. used      2015-05-24  
   last obs. used      2021-03-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .89338  
   source      ORB  
   producer      Davide Farnocchia  
   solution date      2021-Mar-29 10:04:09  

Additional Information
 Earth MOID = .0985862 au 
 Jupiter MOID = .559508 au 
 T_jup = 2.709 
[ 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 17.1   1. K202/4 2 parameter fit from 487 observations, autocmod 2.9c
comet total magnitude slope K1 4.75   n/a K202/4 autocmod 2.9c

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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