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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 2458674.5 (2019-Jul-10.0) TDB
Reference: JPL K202/5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7368009697418931 1.6014e-07  
a 3.054537759534989 9.076e-08 au
q .8039513761963796 5.095e-07 au
i 13.97980522278283 1.563e-05 deg
node 241.8763430797895 6.012e-05 deg
peri 153.6251702506474 8.3237e-05 deg
M 263.088895153839 6.6216e-06 deg
tp 2459199.413470791752
(2020-Dec-15.91347079)
4.9389e-05 TDB
period 1949.919462635416
5.34
8.6908e-05
2.379e-07
d
yr
n .1846230097695632 8.2286e-09 deg/d
Q 5.305124142873598 1.5763e-07 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 5.028933820601987E-10 1.831E-10
A2 [EST] -1.4223897713931E-9 5.805E-11
  Orbit Determination Parameters
   # obs. used (total)      821  
   data-arc span      2123 days (5.81 yr)  
   first obs. used      2015-05-24  
   last obs. used      2021-03-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .89333  
   source      ORB  
   producer      Davide Farnocchia  
   solution date      2021-Jun-01 12:05:43  

Additional Information
 Earth MOID = .0981022 au 
 Jupiter MOID = .559511 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. K202/5 2 parameter fit from 488 observations, autocmod 2.9c
comet total magnitude slope K1 5.   n/a K202/5 autocmod 2.9c

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